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orpiske pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/camel.git


The following commit(s) were added to refs/heads/main by this push:
     new f6440a66004 (chores) core: use more adequately sized buffers
f6440a66004 is described below

commit f6440a66004a663dc35243d5b8a64deb8e5399b3
Author: Otavio R. Piske <angusyo...@gmail.com>
AuthorDate: Sun Aug 25 09:20:45 2024 +0200

    (chores) core: use more adequately sized buffers
    
    Signed-off-by: Otavio R. Piske <angusyo...@gmail.com>
---
 .../main/java/org/apache/camel/CamelExchangeException.java   |  2 +-
 .../org/apache/camel/catalog/EndpointValidationResult.java   |  2 +-
 .../java/org/apache/camel/impl/debugger/BacklogTracer.java   |  2 +-
 .../impl/debugger/DefaultBacklogTracerEventMessage.java      |  5 ++---
 .../camel/impl/engine/DefaultAsyncProcessorAwaitManager.java |  6 +++---
 .../apache/camel/impl/engine/DefaultShutdownStrategy.java    |  4 +++-
 .../java/org/apache/camel/impl/engine/DefaultTracer.java     |  4 ++--
 .../camel/component/properties/DefaultPropertiesParser.java  |  4 ++--
 .../camel/impl/scan/AssignableToPackageScanFilter.java       |  2 +-
 .../apache/camel/language/csimple/CSimpleCodeGenerator.java  |  2 +-
 .../org/apache/camel/language/csimple/CSimpleHelper.java     |  2 +-
 .../apache/camel/language/simple/SimpleExpressionParser.java |  2 +-
 .../apache/camel/language/simple/SimplePredicateParser.java  |  2 +-
 .../org/apache/camel/language/simple/SimpleTokenizer.java    |  4 ++--
 .../org/apache/camel/language/simple/ast/CompositeNodes.java |  2 +-
 .../apache/camel/language/simple/ast/LiteralExpression.java  |  2 +-
 .../camel/language/simple/ast/SimpleFunctionExpression.java  |  6 +++---
 .../camel/language/simple/ast/SimpleFunctionStart.java       |  4 ++--
 .../main/java/org/apache/camel/builder/NotifyBuilder.java    |  4 ++--
 .../src/main/java/org/apache/camel/model/SagaDefinition.java |  2 +-
 .../src/main/java/org/apache/camel/model/WhenDefinition.java |  2 +-
 .../org/apache/camel/model/console/BeanModelDevConsole.java  |  2 +-
 .../apache/camel/model/language/ExpressionDefinition.java    |  2 +-
 .../main/java/org/apache/camel/processor/PipelineHelper.java |  2 +-
 .../java/org/apache/camel/processor/SetHeadersProcessor.java |  3 ++-
 .../org/apache/camel/processor/SetVariablesProcessor.java    |  4 +++-
 .../aggregate/AggregationStrategyParameterInfo.java          |  2 +-
 .../camel/processor/aggregate/OptimisticLockRetryPolicy.java |  3 ++-
 .../camel/processor/aggregate/StringAggregationStrategy.java |  2 +-
 .../main/java/org/apache/camel/support/MessageHelper.java    | 12 +++++-------
 .../org/apache/camel/support/PropertyBindingSupport.java     |  2 +-
 .../java/org/apache/camel/support/RestComponentHelper.java   |  4 +++-
 .../apache/camel/support/RestConsumerContextPathMatcher.java |  2 +-
 .../org/apache/camel/support/builder/ExpressionBuilder.java  |  8 ++++----
 .../camel/support/builder/TokenXMLExpressionIterator.java    | 10 +++++-----
 .../org/apache/camel/support/component/ApiMethodArg.java     |  2 +-
 .../org/apache/camel/support/component/ApiMethodHelper.java  |  2 +-
 .../org/apache/camel/support/component/ApiMethodImpl.java    |  2 +-
 .../org/apache/camel/support/component/ApiMethodParser.java  |  2 +-
 .../camel/support/processor/DefaultExchangeFormatter.java    |  5 ++---
 .../camel/support/processor/DefaultMaskingFormatter.java     |  2 +-
 .../support/processor/PredicateValidationException.java      |  4 +++-
 .../src/main/java/org/apache/camel/util/AntPathMatcher.java  |  2 +-
 .../main/java/org/apache/camel/util/CollectionHelper.java    |  2 +-
 .../src/main/java/org/apache/camel/util/FileUtil.java        |  2 +-
 .../src/main/java/org/apache/camel/util/IOHelper.java        |  4 ++--
 .../src/main/java/org/apache/camel/util/ObjectHelper.java    |  3 ++-
 .../src/main/java/org/apache/camel/util/OgnlHelper.java      |  4 ++--
 .../src/main/java/org/apache/camel/util/StringHelper.java    |  2 +-
 .../main/java/org/apache/camel/util/StringQuoteHelper.java   |  2 +-
 .../src/main/java/org/apache/camel/util/URISupport.java      |  4 ++--
 .../src/main/java/org/apache/camel/util/backoff/BackOff.java |  2 +-
 .../src/test/java/org/apache/camel/xml/in/ParserTest.java    |  2 +-
 .../org/apache/camel/util/xml/pretty/XmlPrettyPrinter.java   |  8 ++++----
 .../java/org/apache/camel/converter/jaxp/DomConverter.java   |  8 ++++----
 .../java/org/apache/camel/converter/jaxp/XmlConverter.java   |  2 +-
 .../apache/camel/support/builder/xml/XMLConverterHelper.java |  2 +-
 .../processor/validation/SchemaValidationException.java      |  3 ++-
 .../java/org/apache/camel/util/xml/XmlLineNumberParser.java  |  2 +-
 59 files changed, 102 insertions(+), 94 deletions(-)

diff --git 
a/core/camel-api/src/main/java/org/apache/camel/CamelExchangeException.java 
b/core/camel-api/src/main/java/org/apache/camel/CamelExchangeException.java
index eb7483ffb8e..57e150da03a 100644
--- a/core/camel-api/src/main/java/org/apache/camel/CamelExchangeException.java
+++ b/core/camel-api/src/main/java/org/apache/camel/CamelExchangeException.java
@@ -54,7 +54,7 @@ public class CamelExchangeException extends CamelException {
      * @return          an error message (without stacktrace from exception)
      */
     public static String createExceptionMessage(String message, Exchange 
exchange, Throwable cause) {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(1024);
         if (message != null) {
             sb.append(message);
         }
diff --git 
a/core/camel-api/src/main/java/org/apache/camel/catalog/EndpointValidationResult.java
 
b/core/camel-api/src/main/java/org/apache/camel/catalog/EndpointValidationResult.java
index 3bfbec6b2ce..512e669c34d 100644
--- 
a/core/camel-api/src/main/java/org/apache/camel/catalog/EndpointValidationResult.java
+++ 
b/core/camel-api/src/main/java/org/apache/camel/catalog/EndpointValidationResult.java
@@ -244,7 +244,7 @@ public class EndpointValidationResult extends 
PropertiesValidationResult impleme
         String format = "%" + maxLen + "s    %s";
 
         // build the human error summary
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(512);
         if (includeHeader) {
             sb.append("Endpoint validator error\n");
             sb.append(
diff --git 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/debugger/BacklogTracer.java
 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/debugger/BacklogTracer.java
index 000c36633f2..f35d4029dc2 100644
--- 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/debugger/BacklogTracer.java
+++ 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/debugger/BacklogTracer.java
@@ -378,7 +378,7 @@ public final class BacklogTracer extends ServiceSupport 
implements org.apache.ca
     }
 
     private static String wrapAroundRootTag(List<BacklogTracerEventMessage> 
events) {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(512);
         sb.append("<").append(BacklogTracerEventMessage.ROOT_TAG).append("s>");
         for (BacklogTracerEventMessage event : events) {
             sb.append("\n").append(event.toXml(2));
diff --git 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/debugger/DefaultBacklogTracerEventMessage.java
 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/debugger/DefaultBacklogTracerEventMessage.java
index b57668d2a8b..7c2c677c8a4 100644
--- 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/debugger/DefaultBacklogTracerEventMessage.java
+++ 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/debugger/DefaultBacklogTracerEventMessage.java
@@ -245,10 +245,9 @@ public final class DefaultBacklogTracerEventMessage 
implements BacklogTracerEven
      */
     @Override
     public String toXml(int indent) {
-        StringBuilder prefix = new StringBuilder();
-        prefix.append(" ".repeat(indent));
+        final String prefix = " ".repeat(indent);
 
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(512);
         sb.append(prefix).append("<").append(ROOT_TAG).append(">\n");
         sb.append(prefix).append("  <uid>").append(uid).append("</uid>\n");
         sb.append(prefix).append("  
<first>").append(first).append("</first>\n");
diff --git 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultAsyncProcessorAwaitManager.java
 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultAsyncProcessorAwaitManager.java
index 3e1d23f063f..3f189b0b400 100644
--- 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultAsyncProcessorAwaitManager.java
+++ 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultAsyncProcessorAwaitManager.java
@@ -178,7 +178,7 @@ public class DefaultAsyncProcessorAwaitManager extends 
ServiceSupport implements
         AwaitThreadEntry entry = (AwaitThreadEntry) inflight.get(exchange);
         if (entry != null) {
             try {
-                StringBuilder sb = new StringBuilder();
+                StringBuilder sb = new StringBuilder(512);
                 sb.append(
                         "Interrupted while waiting for asynchronous callback, 
will release the following blocked thread which was waiting for exchange to 
finish processing with exchangeId: ");
                 sb.append(exchange.getExchangeId());
@@ -227,7 +227,7 @@ public class DefaultAsyncProcessorAwaitManager extends 
ServiceSupport implements
         if (count > 0) {
             LOG.warn("Shutting down while there are still {} inflight threads 
currently blocked.", count);
 
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(1024);
             for (AwaitThread entry : threads) {
                 sb.append(dumpBlockedThread(entry));
             }
@@ -254,7 +254,7 @@ public class DefaultAsyncProcessorAwaitManager extends 
ServiceSupport implements
     }
 
     private static String dumpBlockedThread(AwaitThread entry) {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(512);
         sb.append("\n");
         sb.append("Blocked Thread\n");
         sb.append(
diff --git 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultShutdownStrategy.java
 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultShutdownStrategy.java
index f86fe19d300..d2b253f1769 100644
--- 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultShutdownStrategy.java
+++ 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultShutdownStrategy.java
@@ -817,7 +817,9 @@ public class DefaultShutdownStrategy extends ServiceSupport 
implements ShutdownS
             return;
         }
 
-        StringBuilder sb = new StringBuilder("There are " + size + " inflight 
exchanges:");
+        StringBuilder sb = new StringBuilder(512);
+
+        sb.append("There are ").append(size).append(" inflight exchanges:");
         for (InflightRepository.InflightExchange inflight : filtered) {
             sb.append("\n\tInflightExchange: 
[exchangeId=").append(inflight.getExchange().getExchangeId())
                     .append(", 
fromRouteId=").append(inflight.getExchange().getFromRouteId())
diff --git 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultTracer.java
 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultTracer.java
index 036e318b96b..3a76176ca21 100644
--- 
a/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultTracer.java
+++ 
b/core/camel-base-engine/src/main/java/org/apache/camel/impl/engine/DefaultTracer.java
@@ -98,7 +98,7 @@ public class DefaultTracer extends ServiceSupport implements 
CamelContextAware,
             // characters in the sanitizeUri method and will be reasonably fast
             String label = 
URISupport.sanitizeUri(StringHelper.limitLength(node.getLabel(), 50));
 
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(512);
             sb.append(String.format(tracingFormat, "   ", routeId, label));
             sb.append(" ");
             String data = exchangeFormatter.format(exchange);
@@ -127,7 +127,7 @@ public class DefaultTracer extends ServiceSupport 
implements CamelContextAware,
         if (shouldTrace(node)) {
             String routeId = 
ExpressionBuilder.routeIdExpression().evaluate(exchange, String.class);
 
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(128);
             sb.append(String.format(tracingFormat, "   ", routeId, ""));
             sb.append(" ");
 
diff --git 
a/core/camel-base/src/main/java/org/apache/camel/component/properties/DefaultPropertiesParser.java
 
b/core/camel-base/src/main/java/org/apache/camel/component/properties/DefaultPropertiesParser.java
index 2a5dd373ea8..efcdac9b64e 100644
--- 
a/core/camel-base/src/main/java/org/apache/camel/component/properties/DefaultPropertiesParser.java
+++ 
b/core/camel-base/src/main/java/org/apache/camel/component/properties/DefaultPropertiesParser.java
@@ -135,7 +135,7 @@ public class DefaultPropertiesParser implements 
PropertiesParser {
                 return null;
             }
 
-            StringBuilder answer = new StringBuilder();
+            StringBuilder answer = new StringBuilder(input.length());
             Property property;
             while ((property = readProperty(input)) != null) {
                 String before = input.substring(0, property.getBeginIndex());
@@ -390,7 +390,7 @@ public class DefaultPropertiesParser implements 
PropertiesParser {
                     return UNRESOLVED_PREFIX_TOKEN + key + 
UNRESOLVED_SUFFIX_TOKEN;
                 }
                 if (!optional) {
-                    StringBuilder esb = new StringBuilder();
+                    StringBuilder esb = new StringBuilder(256);
                     esb.append("Property with key [").append(key).append("] ");
                     esb.append("not found in properties from text: 
").append(input);
                     throw new IllegalArgumentException(esb.toString());
diff --git 
a/core/camel-base/src/main/java/org/apache/camel/impl/scan/AssignableToPackageScanFilter.java
 
b/core/camel-base/src/main/java/org/apache/camel/impl/scan/AssignableToPackageScanFilter.java
index 52deb837c8c..2c527e892a1 100644
--- 
a/core/camel-base/src/main/java/org/apache/camel/impl/scan/AssignableToPackageScanFilter.java
+++ 
b/core/camel-base/src/main/java/org/apache/camel/impl/scan/AssignableToPackageScanFilter.java
@@ -74,7 +74,7 @@ public class AssignableToPackageScanFilter implements 
PackageScanFilter {
 
     @Override
     public String toString() {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         for (Class<?> parent : parents) {
             sb.append(parent.getSimpleName()).append(", ");
         }
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleCodeGenerator.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleCodeGenerator.java
index 1f53489f431..eaf25ee5fb7 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleCodeGenerator.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleCodeGenerator.java
@@ -74,7 +74,7 @@ public class CSimpleCodeGenerator {
         script = alias(script);
 
         //  wrap text into a class method we can call
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(4096);
         sb.append("package ").append(qn).append(";\n");
         sb.append("\n");
         sb.append("import java.util.*;\n");
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
index 1ff46c5534e..6d0106b27e0 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
@@ -707,7 +707,7 @@ public final class CSimpleHelper {
 
     public static Object join(Exchange exchange, Object value, String 
separator, String prefix) {
         Iterator<?> it = convertTo(exchange, Iterator.class, value);
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         while (it.hasNext()) {
             Object o = it.next();
             if (o != null) {
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionParser.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionParser.java
index 0d54a822a41..b1deb15caa8 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionParser.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionParser.java
@@ -203,7 +203,7 @@ public class SimpleExpressionParser extends 
BaseSimpleParser {
      * Second step parsing into code
      */
     protected String doParseCode() {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         boolean firstIsLiteral = false;
         for (SimpleNode node : nodes) {
             String exp = node.createCode(expression);
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimplePredicateParser.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimplePredicateParser.java
index 0b82018c935..7cde88d879d 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimplePredicateParser.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimplePredicateParser.java
@@ -163,7 +163,7 @@ public class SimplePredicateParser extends BaseSimpleParser 
{
      * Second step parsing into code
      */
     protected String doParseCode() {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         for (SimpleNode node : nodes) {
             String exp = node.createCode(expression);
             SimpleExpressionParser.parseLiteralNode(sb, node, exp);
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleTokenizer.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleTokenizer.java
index a86b015069c..9f17730ac08 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleTokenizer.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleTokenizer.java
@@ -158,7 +158,7 @@ public final class SimpleTokenizer {
         boolean numericAllowed = acceptType(TokenType.numericValue, filters);
         if (numericAllowed) {
             // is it a numeric value
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(256);
             boolean digit = true;
             while (digit && index < expression.length()) {
                 digit = Character.isDigit(expression.charAt(index));
@@ -186,7 +186,7 @@ public final class SimpleTokenizer {
 
         boolean escapeAllowed = allowEscape && acceptType(TokenType.escape, 
filters);
         if (escapeAllowed) {
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(256);
             char ch = expression.charAt(index);
             boolean escaped = '\\' == ch;
             if (escaped && index < expression.length() - 1) {
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/CompositeNodes.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/CompositeNodes.java
index 61e7a394cfb..3182e8b56fb 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/CompositeNodes.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/CompositeNodes.java
@@ -75,7 +75,7 @@ public class CompositeNodes extends BaseSimpleNode {
         } else if (children.size() == 1) {
             return children.get(0).createCode(expression);
         } else {
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(256);
             for (SimpleNode child : children) {
                 String code = child.createCode(expression);
                 if (code != null) {
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/LiteralExpression.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/LiteralExpression.java
index 30f14a45c56..60167e82152 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/LiteralExpression.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/LiteralExpression.java
@@ -27,7 +27,7 @@ import org.apache.camel.support.builder.ExpressionBuilder;
  */
 public class LiteralExpression extends BaseSimpleNode implements LiteralNode {
 
-    protected final StringBuilder text = new StringBuilder();
+    protected final StringBuilder text = new StringBuilder(256);
 
     public LiteralExpression(SimpleToken token) {
         super(token);
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
index 8f73cdcfec5..c7e5308ac20 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
@@ -1892,7 +1892,7 @@ public class SimpleFunctionExpression extends 
LiteralExpression {
             if (generator == null) {
                 generator = "default";
             }
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(128);
             if ("classic".equals(generator)) {
                 sb.append("    UuidGenerator uuid = new 
org.apache.camel.support.ClassicUuidGenerator();\n");
                 sb.append("return uuid.generateUuid();");
@@ -1971,7 +1971,7 @@ public class SimpleFunctionExpression extends 
LiteralExpression {
     }
 
     private static String ognlCodeMethods(String remainder, String type) {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
 
         if (remainder != null) {
             List<String> methods = splitOgnl(remainder);
@@ -2072,7 +2072,7 @@ public class SimpleFunctionExpression extends 
LiteralExpression {
         }
 
         List<String> answer = new ArrayList<>();
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
 
         int codeLevel = 0;
         boolean singleQuoted = false;
diff --git 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionStart.java
 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionStart.java
index 625a747c378..68e8950a730 100644
--- 
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionStart.java
+++ 
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionStart.java
@@ -79,7 +79,7 @@ public class SimpleFunctionStart extends BaseSimpleNode 
implements BlockStart {
         return new Expression() {
             @Override
             public <T> T evaluate(Exchange exchange, Class<T> type) {
-                StringBuilder sb = new StringBuilder();
+                StringBuilder sb = new StringBuilder(256);
                 boolean quoteEmbeddedFunctions = false;
 
                 // we need to concat the block so we have the expression
@@ -168,7 +168,7 @@ public class SimpleFunctionStart extends BaseSimpleNode 
implements BlockStart {
     }
 
     private String doCreateCompositeCode(String expression) {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         boolean quoteEmbeddedFunctions = false;
 
         // we need to concat the block, so we have the expression
diff --git 
a/core/camel-core-model/src/main/java/org/apache/camel/builder/NotifyBuilder.java
 
b/core/camel-core-model/src/main/java/org/apache/camel/builder/NotifyBuilder.java
index 6ff062f7e00..ca0f5f1d2b8 100644
--- 
a/core/camel-core-model/src/main/java/org/apache/camel/builder/NotifyBuilder.java
+++ 
b/core/camel-core-model/src/main/java/org/apache/camel/builder/NotifyBuilder.java
@@ -1273,7 +1273,7 @@ public class NotifyBuilder {
 
     @Override
     public String toString() {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         for (EventPredicateHolder eventPredicateHolder : predicates) {
             if (!sb.isEmpty()) {
                 sb.append(".");
@@ -1653,7 +1653,7 @@ public class NotifyBuilder {
 
         @Override
         public String toString() {
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(256);
             for (EventPredicate eventPredicate : predicates) {
                 if (!sb.isEmpty()) {
                     sb.append(".");
diff --git 
a/core/camel-core-model/src/main/java/org/apache/camel/model/SagaDefinition.java
 
b/core/camel-core-model/src/main/java/org/apache/camel/model/SagaDefinition.java
index bf97caa3797..248a29893ac 100644
--- 
a/core/camel-core-model/src/main/java/org/apache/camel/model/SagaDefinition.java
+++ 
b/core/camel-core-model/src/main/java/org/apache/camel/model/SagaDefinition.java
@@ -296,7 +296,7 @@ public class SagaDefinition extends 
OutputDefinition<SagaDefinition> {
     // Utils
 
     protected String description() {
-        StringBuilder desc = new StringBuilder();
+        StringBuilder desc = new StringBuilder(256);
         addField(desc, "compensation", compensation);
         addField(desc, "completion", completion);
         addField(desc, "propagation", propagation);
diff --git 
a/core/camel-core-model/src/main/java/org/apache/camel/model/WhenDefinition.java
 
b/core/camel-core-model/src/main/java/org/apache/camel/model/WhenDefinition.java
index 9aad6ae7106..731ae4eb058 100644
--- 
a/core/camel-core-model/src/main/java/org/apache/camel/model/WhenDefinition.java
+++ 
b/core/camel-core-model/src/main/java/org/apache/camel/model/WhenDefinition.java
@@ -57,7 +57,7 @@ public class WhenDefinition extends OutputExpressionNode {
     }
 
     protected String description() {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         if (getExpression() != null) {
             String language = getExpression().getLanguage();
             if (language != null) {
diff --git 
a/core/camel-core-model/src/main/java/org/apache/camel/model/console/BeanModelDevConsole.java
 
b/core/camel-core-model/src/main/java/org/apache/camel/model/console/BeanModelDevConsole.java
index fc537b718fb..d15a33292a3 100644
--- 
a/core/camel-core-model/src/main/java/org/apache/camel/model/console/BeanModelDevConsole.java
+++ 
b/core/camel-core-model/src/main/java/org/apache/camel/model/console/BeanModelDevConsole.java
@@ -58,7 +58,7 @@ public class BeanModelDevConsole extends AbstractDevConsole {
         boolean properties = "true".equals(options.getOrDefault(PROPERTIES, 
"true"));
         boolean nulls = "true".equals(options.getOrDefault(NULLS, "true"));
 
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
 
         BeanIntrospection bi = 
PluginHelper.getBeanIntrospection(getCamelContext());
         Model model = 
getCamelContext().getCamelContextExtension().getContextPlugin(Model.class);
diff --git 
a/core/camel-core-model/src/main/java/org/apache/camel/model/language/ExpressionDefinition.java
 
b/core/camel-core-model/src/main/java/org/apache/camel/model/language/ExpressionDefinition.java
index 04316693f2f..f49ad4055ab 100644
--- 
a/core/camel-core-model/src/main/java/org/apache/camel/model/language/ExpressionDefinition.java
+++ 
b/core/camel-core-model/src/main/java/org/apache/camel/model/language/ExpressionDefinition.java
@@ -121,7 +121,7 @@ public class ExpressionDefinition
             return getExpressionValue().toString();
         }
 
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         if (getLanguage() != null) {
             sb.append(getLanguage()).append("{");
         }
diff --git 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/PipelineHelper.java
 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/PipelineHelper.java
index dd42eb27656..e834b700258 100644
--- 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/PipelineHelper.java
+++ 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/PipelineHelper.java
@@ -45,7 +45,7 @@ public final class PipelineHelper {
             // The errorErrorHandler is only set if satisfactory handling was 
done
             // by the error handler. It's still an exception, the exchange 
still failed.
             if (log.isDebugEnabled()) {
-                StringBuilder sb = new StringBuilder();
+                StringBuilder sb = new StringBuilder(256);
                 sb.append("Message exchange has failed: 
").append(message).append(" for exchange: ").append(exchange);
                 if (exchange.isRollbackOnly() || 
exchange.isRollbackOnlyLast()) {
                     sb.append(" Marked as rollback only.");
diff --git 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/SetHeadersProcessor.java
 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/SetHeadersProcessor.java
index d241e2f616c..107166b3e89 100644
--- 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/SetHeadersProcessor.java
+++ 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/SetHeadersProcessor.java
@@ -73,7 +73,8 @@ public class SetHeadersProcessor extends 
AsyncProcessorSupport implements Tracea
 
     @Override
     public String getTraceLabel() {
-        StringBuilder sb = new StringBuilder("setHeaders[");
+        StringBuilder sb = new StringBuilder(256);
+        sb.append("setHeaders[");
         int headerIndex = 0;
         for (Expression expression : expressions) {
             if (headerIndex > 0) {
diff --git 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/SetVariablesProcessor.java
 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/SetVariablesProcessor.java
index 10772f6dbc5..c4f645efb10 100644
--- 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/SetVariablesProcessor.java
+++ 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/SetVariablesProcessor.java
@@ -71,7 +71,9 @@ public class SetVariablesProcessor extends 
AsyncProcessorSupport implements Trac
 
     @Override
     public String getTraceLabel() {
-        StringBuilder sb = new StringBuilder("setVariables[");
+        StringBuilder sb = new StringBuilder(256);
+
+        sb.append("setVariables[");
         int variableIndex = 0;
         for (Expression expression : expressions) {
             if (variableIndex > 0) {
diff --git 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/AggregationStrategyParameterInfo.java
 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/AggregationStrategyParameterInfo.java
index fb573197950..b01d6d1b752 100644
--- 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/AggregationStrategyParameterInfo.java
+++ 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/AggregationStrategyParameterInfo.java
@@ -50,7 +50,7 @@ public class AggregationStrategyParameterInfo {
 
     @Override
     public String toString() {
-        final StringBuilder sb = new StringBuilder();
+        final StringBuilder sb = new StringBuilder(256);
         sb.append("ParameterInfo");
         sb.append("[index=").append(index);
         sb.append(", type=").append(type);
diff --git 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/OptimisticLockRetryPolicy.java
 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/OptimisticLockRetryPolicy.java
index 2ffa352d5b7..b71c95bdabd 100644
--- 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/OptimisticLockRetryPolicy.java
+++ 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/OptimisticLockRetryPolicy.java
@@ -147,7 +147,8 @@ public class OptimisticLockRetryPolicy {
 
     @Override
     public String toString() {
-        final StringBuilder sb = new 
StringBuilder("OptimisticLockRetryPolicy[");
+        final StringBuilder sb = new StringBuilder(256);
+        sb.append("OptimisticLockRetryPolicy[");
         sb.append("maximumRetries=").append(maximumRetries);
         sb.append(", retryDelay=").append(retryDelay);
         sb.append(", maximumRetryDelay=").append(maximumRetryDelay);
diff --git 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/StringAggregationStrategy.java
 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/StringAggregationStrategy.java
index 83dd161bd90..f4ae01bd83f 100644
--- 
a/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/StringAggregationStrategy.java
+++ 
b/core/camel-core-processor/src/main/java/org/apache/camel/processor/aggregate/StringAggregationStrategy.java
@@ -83,7 +83,7 @@ public class StringAggregationStrategy implements 
AggregationStrategy {
     @Override
     public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
         StringBuffer result; // Aggregate in StringBuffer instead of 
StringBuilder, to make it thread safe
-        StringBuilder value = new StringBuilder();
+        StringBuilder value = new StringBuilder(512);
         if (oldExchange == null) {
             result = getStringBuffer(newExchange); // do not prepend delimiter 
for first invocation
         } else {
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/MessageHelper.java 
b/core/camel-support/src/main/java/org/apache/camel/support/MessageHelper.java
index 73c46203ab8..3ac2df67d46 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/MessageHelper.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/MessageHelper.java
@@ -490,10 +490,9 @@ public final class MessageHelper {
             Message message, boolean includeExchangeProperties, boolean 
includeExchangeVariables,
             boolean includeBody, int indent, boolean allowCachedStreams, 
boolean allowStreams,
             boolean allowFiles, int maxChars) {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(1024);
 
-        StringBuilder prefix = new StringBuilder();
-        prefix.append(" ".repeat(indent));
+        final String prefix = " ".repeat(indent);
 
         // include exchangeId/exchangePattern/type as attribute on the 
<message> tag
         sb.append(prefix);
@@ -753,7 +752,7 @@ public final class MessageHelper {
         boolean enabled = list != null;
         boolean source = !loc.isEmpty();
 
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(2048);
         sb.append("\n");
         sb.append("Message History");
         if (!source && !enabled) {
@@ -1101,10 +1100,9 @@ public final class MessageHelper {
      * @return        the XML
      */
     public static String dumpExceptionAsXML(Throwable exception, int indent) {
-        StringBuilder prefix = new StringBuilder();
-        prefix.append(" ".repeat(indent));
+        final String prefix = " ".repeat(indent);
 
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(512);
         try {
             sb.append(prefix).append("<exception");
             String type = ObjectHelper.classCanonicalName(exception);
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/PropertyBindingSupport.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/PropertyBindingSupport.java
index f59025f8a26..121611361c6 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/PropertyBindingSupport.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/PropertyBindingSupport.java
@@ -1664,7 +1664,7 @@ public final class PropertyBindingSupport {
         List<String> parts = new ArrayList<>();
 
         boolean mapKey = false;
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(key.length() + 16);
         for (char ch : key.toCharArray()) {
             if (ch == '[') {
                 mapKey = true;
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/RestComponentHelper.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/RestComponentHelper.java
index af2fee578f1..48be3701291 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/RestComponentHelper.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/RestComponentHelper.java
@@ -143,9 +143,11 @@ public final class RestComponentHelper {
     }
 
     private static String applyFormatAndQuery(String format, String query, 
Object... formatOptions) {
+        final String initial = String.format(format, formatOptions);
         // get the endpoint
-        StringBuilder urlBuilder = new StringBuilder(String.format(format, 
formatOptions));
+        StringBuilder urlBuilder = new StringBuilder(initial.length() + 
query.length() + 1);
 
+        urlBuilder.append(initial);
         if (!query.isEmpty()) {
             urlBuilder.append("?");
             urlBuilder.append(query);
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/RestConsumerContextPathMatcher.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/RestConsumerContextPathMatcher.java
index c0a8d0eb0ec..97bf6964735 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/RestConsumerContextPathMatcher.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/RestConsumerContextPathMatcher.java
@@ -408,7 +408,7 @@ public final class RestConsumerContextPathMatcher {
      */
     private static String prepareConsumerPathRegex(String consumerPath) {
         Matcher m = CONSUMER_PATH_PARAMETER_PATTERN.matcher(consumerPath);
-        StringBuilder regexBuilder = new StringBuilder();
+        StringBuilder regexBuilder = new StringBuilder(256);
         while (m.find()) {
             m.appendReplacement(regexBuilder, m.group(1) + 
m.group(2).replaceAll("[\\_\\-]", "") + m.group(3));
         }
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/builder/ExpressionBuilder.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/builder/ExpressionBuilder.java
index a0b156baa96..d860a9239d1 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/builder/ExpressionBuilder.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/builder/ExpressionBuilder.java
@@ -1777,7 +1777,7 @@ public class ExpressionBuilder {
                 ObjectHelper.notNull(it,
                         "expression: " + expression + " evaluated on " + 
exchange + " must return an java.util.Iterator");
 
-                StringBuilder sb = new StringBuilder();
+                StringBuilder sb = new StringBuilder(128);
                 while (it.hasNext()) {
                     Object o = it.next();
                     if (o != null) {
@@ -2052,7 +2052,7 @@ public class ExpressionBuilder {
 
             @Override
             public Object evaluate(Exchange exchange) {
-                StringBuilder buffer = new StringBuilder();
+                StringBuilder buffer = new StringBuilder(256);
                 for (Expression expression : expressions) {
                     String text = expression.evaluate(exchange, String.class);
                     if (text != null) {
@@ -2098,7 +2098,7 @@ public class ExpressionBuilder {
                 if (optimizedValue != null) {
                     return optimizedValue;
                 }
-                StringBuilder buffer = new StringBuilder();
+                StringBuilder buffer = new StringBuilder(256);
                 Collection<?> col = optimized != null ? optimized : 
expressions;
                 for (Object obj : col) {
                     if (obj instanceof Expression expression) {
@@ -2130,7 +2130,7 @@ public class ExpressionBuilder {
                         }
                     }
                     if (constantsOnly) {
-                        StringBuilder sb = new StringBuilder();
+                        StringBuilder sb = new StringBuilder(256);
                         for (Object o : preprocessedExpression) {
                             sb.append(o);
                         }
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/builder/TokenXMLExpressionIterator.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/builder/TokenXMLExpressionIterator.java
index e9d3e22c1cd..0cd00f8b827 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/builder/TokenXMLExpressionIterator.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/builder/TokenXMLExpressionIterator.java
@@ -241,7 +241,7 @@ public class TokenXMLExpressionIterator extends 
ExpressionAdapter {
                     head = head.substring(0, head.length() - 1);
                     empty = true;
                 }
-                StringBuilder sb = new StringBuilder();
+                StringBuilder sb = new StringBuilder(256);
                 // append root namespaces to local start token
                 // grab the text
                 String tail = StringHelper.after(next, ">");
@@ -250,7 +250,7 @@ public class TokenXMLExpressionIterator extends 
ExpressionAdapter {
                         .toString();
             } else if (wrapToken) {
                 // wrap the token
-                StringBuilder sb = new StringBuilder();
+                StringBuilder sb = new StringBuilder(256);
                 next = 
sb.append(wrapHead).append(next).append(wrapTail).toString();
             }
 
@@ -258,7 +258,7 @@ public class TokenXMLExpressionIterator extends 
ExpressionAdapter {
         }
 
         private String getMissingInherritNamespaces(final String text) {
-            final StringBuilder sb = new StringBuilder();
+            final StringBuilder sb = new StringBuilder(256);
             if (text != null) {
                 boolean first = true;
                 final String[] containedNamespaces = 
getNamespacesFromNamespaceTokenSplitter(text);
@@ -304,7 +304,7 @@ public class TokenXMLExpressionIterator extends 
ExpressionAdapter {
             }
 
             // build namespace String
-            StringBuilder sb = new StringBuilder();
+            StringBuilder sb = new StringBuilder(256);
             for (Map.Entry<String, String> entry : namespaces.entrySet()) {
                 String key = entry.getKey();
                 // note the value is already quoted
@@ -401,7 +401,7 @@ public class TokenXMLExpressionIterator extends 
ExpressionAdapter {
                 p = ep;
             }
         }
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(128);
         for (int i = tags.size() - 1; i >= 0; i--) {
             sb.append("</").append(tags.get(i)).append(">");
         }
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodArg.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodArg.java
index a5a2afc8508..ffcddaf77d7 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodArg.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodArg.java
@@ -53,7 +53,7 @@ public class ApiMethodArg {
 
     @Override
     public String toString() {
-        StringBuilder builder = new StringBuilder();
+        StringBuilder builder = new StringBuilder(128);
         builder.append(type.getCanonicalName());
         if (typeArgs != null) {
             builder.append("<").append(typeArgs).append(">");
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodHelper.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodHelper.java
index d0faa3f25f5..18fbaeb87a8 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodHelper.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodHelper.java
@@ -107,7 +107,7 @@ public final class ApiMethodHelper<T extends Enum<T> & 
ApiMethod> {
                     ObjectHelper.notNullOrEmpty(alias, "alias");
                     final char firstChar = alias.charAt(0);
                     if (!Character.isLowerCase(firstChar)) {
-                        final StringBuilder builder = new StringBuilder();
+                        final StringBuilder builder = new 
StringBuilder(alias.length() + 2);
                         
builder.append(Character.toLowerCase(firstChar)).append(alias, 1, 
alias.length());
                         alias = builder.toString();
                     }
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodImpl.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodImpl.java
index 30f36d5267d..4b6529ac310 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodImpl.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodImpl.java
@@ -109,7 +109,7 @@ public final class ApiMethodImpl implements ApiMethod {
 
     @Override
     public String toString() {
-        StringBuilder builder = new StringBuilder();
+        StringBuilder builder = new StringBuilder(128);
         builder.append("{")
                 .append("name=").append(name)
                 .append(", resultType=").append(resultType)
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodParser.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodParser.java
index 24fd11b8be3..f027e48aa89 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodParser.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/component/ApiMethodParser.java
@@ -399,7 +399,7 @@ public abstract class ApiMethodParser<T> {
 
         @Override
         public String toString() {
-            StringBuilder builder = new StringBuilder();
+            StringBuilder builder = new StringBuilder(256);
             builder.append(resultType.getName()).append(" ");
             builder.append(name).append("(");
             for (ApiMethodArg argument : arguments) {
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultExchangeFormatter.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultExchangeFormatter.java
index 7b1b8fa453f..15ef56013a0 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultExchangeFormatter.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultExchangeFormatter.java
@@ -129,12 +129,11 @@ public class DefaultExchangeFormatter implements 
ExchangeFormatter {
     public String format(Exchange exchange) {
         Message in = exchange.getIn();
 
-        StringBuilder sb = new StringBuilder();
-
         if (plain) {
             return getBodyAsString(in);
         }
 
+        StringBuilder sb = new StringBuilder(512);
         if (showAll || showExchangeId) {
             if (multiline) {
                 sb.append(SEPARATOR);
@@ -242,7 +241,7 @@ public class DefaultExchangeFormatter implements 
ExchangeFormatter {
 
         // only cut if we hit max-chars limit (or are using multiline
         if (multiline || maxChars > 0 && sb.length() > maxChars) {
-            StringBuilder answer = new StringBuilder();
+            StringBuilder answer = new StringBuilder(sb.length());
             for (String s : sb.toString().split(SEPARATOR)) {
                 if (s != null) {
                     if (s.length() > maxChars) {
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultMaskingFormatter.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultMaskingFormatter.java
index bd28f16c9de..89be82026f3 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultMaskingFormatter.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultMaskingFormatter.java
@@ -206,7 +206,7 @@ public class DefaultMaskingFormatter implements 
MaskingFormatter {
     }
 
     protected StringBuilder createOneOfThemRegex(Set<String> keywords) {
-        StringBuilder regex = new StringBuilder();
+        StringBuilder regex = new StringBuilder(256);
         if (keywords == null || keywords.isEmpty()) {
             return null;
         }
diff --git 
a/core/camel-support/src/main/java/org/apache/camel/support/processor/PredicateValidationException.java
 
b/core/camel-support/src/main/java/org/apache/camel/support/processor/PredicateValidationException.java
index f11da7a8e91..47f2018647b 100644
--- 
a/core/camel-support/src/main/java/org/apache/camel/support/processor/PredicateValidationException.java
+++ 
b/core/camel-support/src/main/java/org/apache/camel/support/processor/PredicateValidationException.java
@@ -37,7 +37,9 @@ public class PredicateValidationException extends 
ValidationException {
     }
 
     protected static String buildMessage(Predicate predicate, Exchange 
exchange) {
-        StringBuilder builder = new StringBuilder("Validation failed for 
Predicate[");
+        StringBuilder builder = new StringBuilder(256);
+
+        builder.append("Validation failed for Predicate[");
         builder.append(predicate.toString());
         builder.append("]");
         return builder.toString();
diff --git 
a/core/camel-util/src/main/java/org/apache/camel/util/AntPathMatcher.java 
b/core/camel-util/src/main/java/org/apache/camel/util/AntPathMatcher.java
index 47fa914446f..a3bed8b2f9a 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/AntPathMatcher.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/AntPathMatcher.java
@@ -405,7 +405,7 @@ public class AntPathMatcher {
         String[] patternParts = tokenizeToStringArray(pattern, 
this.pathSeparator);
         String[] pathParts = tokenizeToStringArray(path, this.pathSeparator);
 
-        StringBuilder buffer = new StringBuilder();
+        StringBuilder buffer = new StringBuilder(path.length());
 
         // Add any path parts that have a wildcarded pattern part.
         int puts = 0;
diff --git 
a/core/camel-util/src/main/java/org/apache/camel/util/CollectionHelper.java 
b/core/camel-util/src/main/java/org/apache/camel/util/CollectionHelper.java
index bfc1fa50379..83d886cce3d 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/CollectionHelper.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/CollectionHelper.java
@@ -105,7 +105,7 @@ public final class CollectionHelper {
             return "";
         }
 
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         Iterator<?> it = col.iterator();
         while (it.hasNext()) {
             sb.append(it.next().toString());
diff --git a/core/camel-util/src/main/java/org/apache/camel/util/FileUtil.java 
b/core/camel-util/src/main/java/org/apache/camel/util/FileUtil.java
index b85832c4625..e43e4d600fa 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/FileUtil.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/FileUtil.java
@@ -338,7 +338,7 @@ public final class FileUtil {
         }
 
         // build path based on stack
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         if (scheme != null) {
             sb.append(scheme);
             sb.append(":");
diff --git a/core/camel-util/src/main/java/org/apache/camel/util/IOHelper.java 
b/core/camel-util/src/main/java/org/apache/camel/util/IOHelper.java
index e70732e931c..a6be1287b83 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/IOHelper.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/IOHelper.java
@@ -523,7 +523,7 @@ public final class IOHelper {
      * Warning, don't use for crazy big streams :)
      */
     public static String loadText(InputStream in) throws IOException {
-        StringBuilder builder = new StringBuilder();
+        StringBuilder builder = new StringBuilder(2048);
         InputStreamReader isr = new InputStreamReader(in);
         try {
             BufferedReader reader = buffered(isr);
@@ -856,7 +856,7 @@ public final class IOHelper {
      * @return                 the filtered content of the file
      */
     public static String stripLineComments(Path path, String commentPrefix, 
boolean stripBlankLines) {
-        StringBuilder result = new StringBuilder();
+        StringBuilder result = new StringBuilder(2048);
         try (Stream<String> lines = Files.lines(path)) {
             lines
                     .filter(l -> !stripBlankLines || !l.isBlank())
diff --git 
a/core/camel-util/src/main/java/org/apache/camel/util/ObjectHelper.java 
b/core/camel-util/src/main/java/org/apache/camel/util/ObjectHelper.java
index 7eb4673946a..fdb9d126700 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/ObjectHelper.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/ObjectHelper.java
@@ -917,7 +917,8 @@ public final class ObjectHelper {
         if (objects == null) {
             return "null";
         } else {
-            StringBuilder buffer = new StringBuilder("{");
+            StringBuilder buffer = new StringBuilder(256);
+            buffer.append("{");
             int counter = 0;
             for (Object object : objects) {
                 if (counter++ > 0) {
diff --git 
a/core/camel-util/src/main/java/org/apache/camel/util/OgnlHelper.java 
b/core/camel-util/src/main/java/org/apache/camel/util/OgnlHelper.java
index 76bce3eaa2f..a37d5400ffa 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/OgnlHelper.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/OgnlHelper.java
@@ -183,7 +183,7 @@ public final class OgnlHelper {
         }
 
         List<String> methods = new ArrayList<>(4);
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
 
         int j = 0; // j is used as counter per method
         int squareBracketCnt = 0; // special to keep track if and how deep we 
are inside a square bracket block, eg: [foo]
@@ -288,7 +288,7 @@ public final class OgnlHelper {
     }
 
     public static String methodAsDoubleQuotes(String ognl) {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(ognl.length() + 32);
 
         int singleBracketCnt = 0;
         int doubleBracketCnt = 0;
diff --git 
a/core/camel-util/src/main/java/org/apache/camel/util/StringHelper.java 
b/core/camel-util/src/main/java/org/apache/camel/util/StringHelper.java
index d30d145caf7..f5e9722ae5c 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/StringHelper.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/StringHelper.java
@@ -1152,7 +1152,7 @@ public final class StringHelper {
         if (text == null || text.isEmpty()) {
             return text;
         }
-        StringBuilder answer = new StringBuilder();
+        StringBuilder answer = new StringBuilder(text.length() + 16);
 
         Character prev = null;
         Character next;
diff --git 
a/core/camel-util/src/main/java/org/apache/camel/util/StringQuoteHelper.java 
b/core/camel-util/src/main/java/org/apache/camel/util/StringQuoteHelper.java
index ab8cf20cd82..83ba2bfe3ae 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/StringQuoteHelper.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/StringQuoteHelper.java
@@ -119,7 +119,7 @@ public final class StringQuoteHelper {
         }
 
         List<String> answer = new ArrayList<>();
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(input.length());
 
         boolean singleQuoted = false;
         boolean doubleQuoted = false;
diff --git 
a/core/camel-util/src/main/java/org/apache/camel/util/URISupport.java 
b/core/camel-util/src/main/java/org/apache/camel/util/URISupport.java
index cfb09f010a0..fefc333727d 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/URISupport.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/URISupport.java
@@ -879,7 +879,7 @@ public final class URISupport {
             return "";
         }
 
-        final StringBuilder joined = new StringBuilder();
+        final StringBuilder joined = new StringBuilder(paths.length * 64);
 
         boolean addedLast = false;
         for (int i = paths.length - 1; i >= 0; i--) {
@@ -907,7 +907,7 @@ public final class URISupport {
     }
 
     public static String buildMultiValueQuery(String key, Iterable<Object> 
values) {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         for (Object v : values) {
             if (!sb.isEmpty()) {
                 sb.append("&");
diff --git 
a/core/camel-util/src/main/java/org/apache/camel/util/backoff/BackOff.java 
b/core/camel-util/src/main/java/org/apache/camel/util/backoff/BackOff.java
index 3939d50eed8..edbe4667908 100644
--- a/core/camel-util/src/main/java/org/apache/camel/util/backoff/BackOff.java
+++ b/core/camel-util/src/main/java/org/apache/camel/util/backoff/BackOff.java
@@ -111,7 +111,7 @@ public final class BackOff {
 
     @Override
     public String toString() {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         sb.append("BackOff[");
         sb.append("delay=").append(delay.toMillis());
         if (maxDelay != MAX_DURATION) {
diff --git 
a/core/camel-xml-io/src/test/java/org/apache/camel/xml/in/ParserTest.java 
b/core/camel-xml-io/src/test/java/org/apache/camel/xml/in/ParserTest.java
index 00ded5053c1..cc058311aee 100644
--- a/core/camel-xml-io/src/test/java/org/apache/camel/xml/in/ParserTest.java
+++ b/core/camel-xml-io/src/test/java/org/apache/camel/xml/in/ParserTest.java
@@ -134,7 +134,7 @@ public class ParserTest {
 
     @Test
     public void parseTheEdge() throws XmlPullParserException, IOException {
-        StringBuilder sb = new StringBuilder();
+        StringBuilder sb = new StringBuilder(256);
         sb.append("<?xml version='1.0'?>\n");
         sb.append("<!--\n");
         for (int i = sb.toString().length() + 4 - 2; i < 8 * 1024; i += 4) {
diff --git 
a/core/camel-xml-jaxp-util/src/main/java/org/apache/camel/util/xml/pretty/XmlPrettyPrinter.java
 
b/core/camel-xml-jaxp-util/src/main/java/org/apache/camel/util/xml/pretty/XmlPrettyPrinter.java
index 2d004d3192b..e989e8de7a8 100644
--- 
a/core/camel-xml-jaxp-util/src/main/java/org/apache/camel/util/xml/pretty/XmlPrettyPrinter.java
+++ 
b/core/camel-xml-jaxp-util/src/main/java/org/apache/camel/util/xml/pretty/XmlPrettyPrinter.java
@@ -104,7 +104,7 @@ public final class XmlPrettyPrinter {
         
factory.setFeature("http://xml.org/sax/features/external-general-entities";, 
false);
         parser = factory.newSAXParser();
 
-        final StringBuilder sb = new StringBuilder();
+        final StringBuilder sb = new StringBuilder(256);
         final DefaultHandler handler = new DefaultHandler() {
             int indent;
             boolean inElement;
@@ -112,7 +112,7 @@ public final class XmlPrettyPrinter {
             @Override
             public void declaration(String version, String encoding, String 
standalone) throws SAXException {
                 if (declaration) {
-                    StringBuilder lb = new StringBuilder();
+                    StringBuilder lb = new StringBuilder(256);
                     lb.append("<?xml");
                     if (version != null) {
                         lb.append(" version=\"").append(version).append("\"");
@@ -136,7 +136,7 @@ public final class XmlPrettyPrinter {
                 inElement = true;
                 sb.append(XmlPrettyPrinter.padString(indent, blanks));
 
-                StringBuilder lb = new StringBuilder();
+                StringBuilder lb = new StringBuilder(256);
                 lb.append("<");
                 lb.append(qName);
 
@@ -170,7 +170,7 @@ public final class XmlPrettyPrinter {
                 inElement = false;
                 --indent;
 
-                StringBuilder lb = new StringBuilder();
+                StringBuilder lb = new StringBuilder(256);
                 lb.append("</");
                 lb.append(qName);
                 lb.append(">");
diff --git 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/DomConverter.java
 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/DomConverter.java
index 556728c20fd..507c9bff8ee 100644
--- 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/DomConverter.java
+++ 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/DomConverter.java
@@ -54,7 +54,7 @@ public final class DomConverter {
         // sometimes the NodeList is a Node which we can then leverage
         // the XML converter to turn into XML incl. tags
 
-        StringBuilder buffer = new StringBuilder();
+        StringBuilder buffer = new StringBuilder(128);
 
         // use XML converter at first since it preserves tag names
         boolean found = false;
@@ -93,7 +93,7 @@ public final class DomConverter {
         if (node instanceof Text) {
             Text textnode = (Text) node;
 
-            StringBuilder b = new StringBuilder();
+            StringBuilder b = new StringBuilder(128);
             b.append(textnode.getNodeValue());
             textnode = (Text) textnode.getNextSibling();
             while (textnode != null) {
@@ -109,7 +109,7 @@ public final class DomConverter {
 
     @Converter(order = 3)
     public static Integer toInteger(NodeList nodeList) {
-        StringBuilder buffer = new StringBuilder();
+        StringBuilder buffer = new StringBuilder(128);
         append(buffer, nodeList);
         String s = buffer.toString();
         return Integer.valueOf(s);
@@ -117,7 +117,7 @@ public final class DomConverter {
 
     @Converter(order = 4)
     public static Long toLong(NodeList nodeList) {
-        StringBuilder buffer = new StringBuilder();
+        StringBuilder buffer = new StringBuilder(128);
         append(buffer, nodeList);
         String s = buffer.toString();
         return Long.valueOf(s);
diff --git 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/XmlConverter.java
 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/XmlConverter.java
index 9e88404a497..48a014c9ebf 100644
--- 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/XmlConverter.java
+++ 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/XmlConverter.java
@@ -951,7 +951,7 @@ public class XmlConverter {
             }
         }
         if (!features.isEmpty()) {
-            StringBuilder featureString = new StringBuilder();
+            StringBuilder featureString = new StringBuilder(256);
             // just log the configured feature
             for (String feature : features) {
                 if (!featureString.isEmpty()) {
diff --git 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/support/builder/xml/XMLConverterHelper.java
 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/support/builder/xml/XMLConverterHelper.java
index 383c226c154..f78a6728d82 100644
--- 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/support/builder/xml/XMLConverterHelper.java
+++ 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/support/builder/xml/XMLConverterHelper.java
@@ -309,7 +309,7 @@ public class XMLConverterHelper {
             }
         }
         if (!features.isEmpty()) {
-            StringBuilder featureString = new StringBuilder();
+            StringBuilder featureString = new StringBuilder(256);
             // just log the configured feature
             for (String feature : features) {
                 if (!featureString.isEmpty()) {
diff --git 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/support/processor/validation/SchemaValidationException.java
 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/support/processor/validation/SchemaValidationException.java
index b6ec46ccf2f..3e903fa1558 100644
--- 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/support/processor/validation/SchemaValidationException.java
+++ 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/support/processor/validation/SchemaValidationException.java
@@ -75,7 +75,8 @@ public class SchemaValidationException extends 
ValidationException {
     protected static String message(
             Object schema, List<SAXParseException> fatalErrors,
             List<SAXParseException> errors, List<SAXParseException> warnings) {
-        StringBuilder buffer = new StringBuilder("Validation failed for: ")
+        StringBuilder buffer = new StringBuilder(128)
+                .append("Validation failed for: ")
                 .append(schema)
                 .append("\n");
 
diff --git 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/util/xml/XmlLineNumberParser.java
 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/util/xml/XmlLineNumberParser.java
index 47b45381965..813c881ad27 100644
--- 
a/core/camel-xml-jaxp/src/main/java/org/apache/camel/util/xml/XmlLineNumberParser.java
+++ 
b/core/camel-xml-jaxp/src/main/java/org/apache/camel/util/xml/XmlLineNumberParser.java
@@ -142,7 +142,7 @@ public final class XmlLineNumberParser {
         doc = docBuilder.newDocument();
 
         final ArrayDeque<Element> elementStack = new ArrayDeque<>();
-        final StringBuilder textBuffer = new StringBuilder();
+        final StringBuilder textBuffer = new StringBuilder(256);
         final DefaultHandler handler = new DefaultHandler() {
             private Locator locator;
             private boolean found;

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