[tomcat] branch 9.0.x updated: Refactor to avoid use of Hashtable. No functional change.

[markt]

This is an automated email from the ASF dual-hosted git repository.

markt pushed a commit to branch 9.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/9.0.x by this push:
     new 1f380e3a40 Refactor to avoid use of Hashtable. No functional change.
1f380e3a40 is described below

commit 1f380e3a40395f911e0f52d33643b3693f5753c4
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Thu Sep 15 16:54:30 2022 +0100

    Refactor to avoid use of Hashtable. No functional change.
---
 java/org/apache/jasper/compiler/Generator.java     | 29 +++++++++-------------
 .../apache/jasper/compiler/TagLibraryInfoImpl.java |  4 +--
 2 files changed, 14 insertions(+), 19 deletions(-)

diff --git a/java/org/apache/jasper/compiler/Generator.java 
b/java/org/apache/jasper/compiler/Generator.java
index 45ff4a03d8..b0c83469ed 100644
--- a/java/org/apache/jasper/compiler/Generator.java
+++ b/java/org/apache/jasper/compiler/Generator.java
@@ -29,10 +29,8 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.Date;
-import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.Hashtable;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -911,9 +909,9 @@ class Generator {
          * handlers: <key>: tag short name <value>: introspection info of tag
          * handler for <prefix:shortName> tag
          */
-        private final Hashtable<String,Hashtable<String,TagHandlerInfo>> 
handlerInfos;
+        private final Map<String,Map<String,TagHandlerInfo>> handlerInfos;
 
-        private final Hashtable<String,Integer> tagVarNumbers;
+        private final Map<String,Integer> tagVarNumbers;
 
         private String parent;
 
@@ -951,8 +949,8 @@ class Generator {
             this.methodsBuffered = methodsBuffered;
             this.fragmentHelperClass = fragmentHelperClass;
             methodNesting = 0;
-            handlerInfos = new Hashtable<>();
-            tagVarNumbers = new Hashtable<>();
+            handlerInfos = new HashMap<>();
+            tagVarNumbers = new HashMap<>();
             textMap = new HashMap<>();
         }
 
@@ -2026,7 +2024,7 @@ class Generator {
 
             // Compute attribute value string for XML-style and named
             // attributes
-            Hashtable<String,String> map = new Hashtable<>();
+            Map<String,String> map = new HashMap<>();
             // Validator ensures this is non-null
             Node.JspAttribute[] attrs = n.getJspAttributes();
             for (int i = 0; i < attrs.length; i++) {
@@ -2071,9 +2069,7 @@ class Generator {
             out.print(" + " + elemName);
 
             // Write remaining attributes
-            Enumeration<String> enumeration = map.keys();
-            while (enumeration.hasMoreElements()) {
-                String attrName = enumeration.nextElement();
+            for (String attrName : map.keySet()) {
                 out.print(map.get(attrName));
             }
 
@@ -2369,10 +2365,9 @@ class Generator {
 
         private TagHandlerInfo getTagHandlerInfo(Node.CustomTag n)
                 throws JasperException {
-            Hashtable<String,TagHandlerInfo> handlerInfosByShortName =
-                handlerInfos.get(n.getPrefix());
+            Map<String,TagHandlerInfo> handlerInfosByShortName = 
handlerInfos.get(n.getPrefix());
             if (handlerInfosByShortName == null) {
-                handlerInfosByShortName = new Hashtable<>();
+                handlerInfosByShortName = new HashMap<>();
                 handlerInfos.put(n.getPrefix(), handlerInfosByShortName);
             }
             TagHandlerInfo handlerInfo =
@@ -4045,9 +4040,9 @@ class Generator {
      */
     private static class TagHandlerInfo {
 
-        private Hashtable<String, Method> methodMaps;
+        private Map<String, Method> methodMaps;
 
-        private Hashtable<String, Class<?>> propertyEditorMaps;
+        private Map<String, Class<?>> propertyEditorMaps;
 
         private Class<?> tagHandlerClass;
 
@@ -4065,8 +4060,8 @@ class Generator {
         TagHandlerInfo(Node n, Class<?> tagHandlerClass,
                 ErrorDispatcher err) throws JasperException {
             this.tagHandlerClass = tagHandlerClass;
-            this.methodMaps = new Hashtable<>();
-            this.propertyEditorMaps = new Hashtable<>();
+            this.methodMaps = new HashMap<>();
+            this.propertyEditorMaps = new HashMap<>();
 
             try {
                 BeanInfo tagClassInfo = 
Introspector.getBeanInfo(tagHandlerClass);
diff --git a/java/org/apache/jasper/compiler/TagLibraryInfoImpl.java 
b/java/org/apache/jasper/compiler/TagLibraryInfoImpl.java
index 949df622d8..10f44af3c9 100644
--- a/java/org/apache/jasper/compiler/TagLibraryInfoImpl.java
+++ b/java/org/apache/jasper/compiler/TagLibraryInfoImpl.java
@@ -25,8 +25,8 @@ import java.net.URL;
 import java.net.URLConnection;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.HashSet;
-import java.util.Hashtable;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -349,7 +349,7 @@ class TagLibraryInfoImpl extends TagLibraryInfo implements 
TagConstants {
             return null;
         }
 
-        Map<String, Object> initParams = new 
Hashtable<>(validatorXml.getInitParams());
+        Map<String, Object> initParams = new 
HashMap<>(validatorXml.getInitParams());
 
         try {
             Class<?> tlvClass = 
ctxt.getClassLoader().loadClass(validatorClass);


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