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ggregory pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-pool.git


The following commit(s) were added to refs/heads/master by this push:
     new 057eed6  Remove leading underscores from instance variable names.
057eed6 is described below

commit 057eed65a559d0b4408ca2fb9a823510ad3fedf4
Author: Gary Gregory <gardgreg...@gmail.com>
AuthorDate: Fri Aug 13 18:20:41 2021 -0400

    Remove leading underscores from instance variable names.
---
 .../apache/commons/pool2/TestBaseObjectPool.java   | 166 ++++++------
 .../apache/commons/pool2/TestKeyedObjectPool.java  | 286 ++++++++++-----------
 .../pool2/impl/TestAbandonedKeyedObjectPool.java   |   6 +-
 .../pool2/impl/TestAbandonedObjectPool.java        |  22 +-
 .../pool2/impl/TestGenericKeyedObjectPool.java     | 128 ++++-----
 .../commons/pool2/impl/TestGenericObjectPool.java  | 132 +++++-----
 6 files changed, 369 insertions(+), 371 deletions(-)

diff --git a/src/test/java/org/apache/commons/pool2/TestBaseObjectPool.java 
b/src/test/java/org/apache/commons/pool2/TestBaseObjectPool.java
index 58b849a..5a8f524 100644
--- a/src/test/java/org/apache/commons/pool2/TestBaseObjectPool.java
+++ b/src/test/java/org/apache/commons/pool2/TestBaseObjectPool.java
@@ -40,7 +40,7 @@ public class TestBaseObjectPool extends TestObjectPool {
         }
     }
 
-    private ObjectPool<String> _pool;
+    private ObjectPool<String> pool;
 
     /**
      * @param n Ignored by this implemented. Used by sub-classes.
@@ -91,65 +91,65 @@ public class TestBaseObjectPool extends TestObjectPool {
     @Test
     public void testBaseAddObject() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException e) {
             return; // skip this test if unsupported
         }
         try {
-            assertEquals(0, _pool.getNumIdle());
-            assertEquals(0, _pool.getNumActive());
-            _pool.addObject();
-            assertEquals(1, _pool.getNumIdle());
-            assertEquals(0, _pool.getNumActive());
-            final String obj = _pool.borrowObject();
+            assertEquals(0, pool.getNumIdle());
+            assertEquals(0, pool.getNumActive());
+            pool.addObject();
+            assertEquals(1, pool.getNumIdle());
+            assertEquals(0, pool.getNumActive());
+            final String obj = pool.borrowObject();
             assertEquals(getNthObject(0), obj);
-            assertEquals(0, _pool.getNumIdle());
-            assertEquals(1, _pool.getNumActive());
-            _pool.returnObject(obj);
-            assertEquals(1, _pool.getNumIdle());
-            assertEquals(0, _pool.getNumActive());
+            assertEquals(0, pool.getNumIdle());
+            assertEquals(1, pool.getNumActive());
+            pool.returnObject(obj);
+            assertEquals(1, pool.getNumIdle());
+            assertEquals(0, pool.getNumActive());
         } catch(final UnsupportedOperationException e) {
             return; // skip this test if one of those calls is unsupported
         } finally {
-            _pool.close();
+            pool.close();
         }
     }
 
     @Test
     public void testBaseBorrow() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException e) {
             return; // skip this test if unsupported
         }
-        assertEquals(getNthObject(0), _pool.borrowObject());
-        assertEquals(getNthObject(1), _pool.borrowObject());
-        assertEquals(getNthObject(2), _pool.borrowObject());
-        _pool.close();
+        assertEquals(getNthObject(0), pool.borrowObject());
+        assertEquals(getNthObject(1), pool.borrowObject());
+        assertEquals(getNthObject(2), pool.borrowObject());
+        pool.close();
     }
 
     @Test
     public void testBaseBorrowReturn() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException e) {
             return; // skip this test if unsupported
         }
-        String obj0 = _pool.borrowObject();
+        String obj0 = pool.borrowObject();
         assertEquals(getNthObject(0), obj0);
-        String obj1 = _pool.borrowObject();
+        String obj1 = pool.borrowObject();
         assertEquals(getNthObject(1), obj1);
-        String obj2 = _pool.borrowObject();
+        String obj2 = pool.borrowObject();
         assertEquals(getNthObject(2), obj2);
-        _pool.returnObject(obj2);
-        obj2 = _pool.borrowObject();
+        pool.returnObject(obj2);
+        obj2 = pool.borrowObject();
         assertEquals(getNthObject(2), obj2);
-        _pool.returnObject(obj1);
-        obj1 = _pool.borrowObject();
+        pool.returnObject(obj1);
+        obj1 = pool.borrowObject();
         assertEquals(getNthObject(1), obj1);
-        _pool.returnObject(obj0);
-        _pool.returnObject(obj2);
-        obj2 = _pool.borrowObject();
+        pool.returnObject(obj0);
+        pool.returnObject(obj2);
+        obj2 = pool.borrowObject();
         if (isLifo()) {
             assertEquals(getNthObject(2),obj2);
         }
@@ -157,54 +157,54 @@ public class TestBaseObjectPool extends TestObjectPool {
             assertEquals(getNthObject(0),obj2);
         }
 
-        obj0 = _pool.borrowObject();
+        obj0 = pool.borrowObject();
         if (isLifo()) {
             assertEquals(getNthObject(0),obj0);
         }
         if (isFifo()) {
             assertEquals(getNthObject(2),obj0);
         }
-        _pool.close();
+        pool.close();
     }
 
     @Test
     public void testBaseClear() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch (final UnsupportedOperationException e) {
             return; // skip this test if unsupported
         }
-        assertEquals(0, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        final String obj0 = _pool.borrowObject();
-        final String obj1 = _pool.borrowObject();
-        assertEquals(2, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        _pool.returnObject(obj1);
-        _pool.returnObject(obj0);
-        assertEquals(0, _pool.getNumActive());
-        assertEquals(2, _pool.getNumIdle());
-        _pool.clear();
-        assertEquals(0, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        final Object obj2 = _pool.borrowObject();
+        assertEquals(0, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        final String obj0 = pool.borrowObject();
+        final String obj1 = pool.borrowObject();
+        assertEquals(2, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        pool.returnObject(obj1);
+        pool.returnObject(obj0);
+        assertEquals(0, pool.getNumActive());
+        assertEquals(2, pool.getNumIdle());
+        pool.clear();
+        assertEquals(0, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        final Object obj2 = pool.borrowObject();
         assertEquals(getNthObject(2), obj2);
-        _pool.close();
+        pool.close();
     }
 
     @Test
     public void testBaseClosePool() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException e) {
             return; // skip this test if unsupported
         }
-        final String obj = _pool.borrowObject();
-        _pool.returnObject(obj);
+        final String obj = pool.borrowObject();
+        pool.returnObject(obj);
 
-        _pool.close();
+        pool.close();
         try {
-            _pool.borrowObject();
+            pool.borrowObject();
             fail("Expected IllegalStateException");
         } catch(final IllegalStateException e) {
             // expected
@@ -214,47 +214,47 @@ public class TestBaseObjectPool extends TestObjectPool {
     @Test
     public void testBaseInvalidateObject() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch (final UnsupportedOperationException e) {
             return; // skip this test if unsupported
         }
-        assertEquals(0, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        final String obj0 = _pool.borrowObject();
-        final String obj1 = _pool.borrowObject();
-        assertEquals(2, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        _pool.invalidateObject(obj0);
-        assertEquals(1, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        _pool.invalidateObject(obj1);
-        assertEquals(0, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        _pool.close();
+        assertEquals(0, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        final String obj0 = pool.borrowObject();
+        final String obj1 = pool.borrowObject();
+        assertEquals(2, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        pool.invalidateObject(obj0);
+        assertEquals(1, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        pool.invalidateObject(obj1);
+        assertEquals(0, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        pool.close();
     }
 
     @Test
     public void testBaseNumActiveNumIdle() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch (final UnsupportedOperationException e) {
             return; // skip this test if unsupported
         }
-        assertEquals(0, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        final String obj0 = _pool.borrowObject();
-        assertEquals(1, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        final String obj1 = _pool.borrowObject();
-        assertEquals(2, _pool.getNumActive());
-        assertEquals(0, _pool.getNumIdle());
-        _pool.returnObject(obj1);
-        assertEquals(1, _pool.getNumActive());
-        assertEquals(1, _pool.getNumIdle());
-        _pool.returnObject(obj0);
-        assertEquals(0, _pool.getNumActive());
-        assertEquals(2, _pool.getNumIdle());
-        _pool.close();
+        assertEquals(0, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        final String obj0 = pool.borrowObject();
+        assertEquals(1, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        final String obj1 = pool.borrowObject();
+        assertEquals(2, pool.getNumActive());
+        assertEquals(0, pool.getNumIdle());
+        pool.returnObject(obj1);
+        assertEquals(1, pool.getNumActive());
+        assertEquals(1, pool.getNumIdle());
+        pool.returnObject(obj0);
+        assertEquals(0, pool.getNumActive());
+        assertEquals(2, pool.getNumIdle());
+        pool.close();
     }
 
     @Test
diff --git a/src/test/java/org/apache/commons/pool2/TestKeyedObjectPool.java 
b/src/test/java/org/apache/commons/pool2/TestKeyedObjectPool.java
index 6979288..7b7f1b5 100644
--- a/src/test/java/org/apache/commons/pool2/TestKeyedObjectPool.java
+++ b/src/test/java/org/apache/commons/pool2/TestKeyedObjectPool.java
@@ -173,7 +173,7 @@ public abstract class TestKeyedObjectPool {
 
     protected static final String KEY = "key";
 
-    private KeyedObjectPool<Object,Object> _pool;
+    private KeyedObjectPool<Object,Object> pool;
 
     // Deliberate choice to create a new object in case future unit tests check
     // for a specific object.
@@ -234,237 +234,237 @@ public abstract class TestKeyedObjectPool {
 
     @AfterEach
     public void tearDown() {
-        _pool = null;
+        pool = null;
     }
 
     @Test
     public void testBaseAddObject() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException uoe) {
             return; // skip this test if unsupported
         }
         final Object key = makeKey(0);
         try {
-            assertEquals(0,_pool.getNumIdle());
-            assertEquals(0,_pool.getNumActive());
-            assertEquals(0,_pool.getNumIdle(key));
-            assertEquals(0,_pool.getNumActive(key));
-            _pool.addObject(key);
-            assertEquals(1,_pool.getNumIdle());
-            assertEquals(0,_pool.getNumActive());
-            assertEquals(1,_pool.getNumIdle(key));
-            assertEquals(0,_pool.getNumActive(key));
-            final Object obj = _pool.borrowObject(key);
+            assertEquals(0,pool.getNumIdle());
+            assertEquals(0,pool.getNumActive());
+            assertEquals(0,pool.getNumIdle(key));
+            assertEquals(0,pool.getNumActive(key));
+            pool.addObject(key);
+            assertEquals(1,pool.getNumIdle());
+            assertEquals(0,pool.getNumActive());
+            assertEquals(1,pool.getNumIdle(key));
+            assertEquals(0,pool.getNumActive(key));
+            final Object obj = pool.borrowObject(key);
             assertEquals(getNthObject(key,0),obj);
-            assertEquals(0,_pool.getNumIdle());
-            assertEquals(1,_pool.getNumActive());
-            assertEquals(0,_pool.getNumIdle(key));
-            assertEquals(1,_pool.getNumActive(key));
-            _pool.returnObject(key,obj);
-            assertEquals(1,_pool.getNumIdle());
-            assertEquals(0,_pool.getNumActive());
-            assertEquals(1,_pool.getNumIdle(key));
-            assertEquals(0,_pool.getNumActive(key));
+            assertEquals(0,pool.getNumIdle());
+            assertEquals(1,pool.getNumActive());
+            assertEquals(0,pool.getNumIdle(key));
+            assertEquals(1,pool.getNumActive(key));
+            pool.returnObject(key,obj);
+            assertEquals(1,pool.getNumIdle());
+            assertEquals(0,pool.getNumActive());
+            assertEquals(1,pool.getNumIdle(key));
+            assertEquals(0,pool.getNumActive(key));
         } catch(final UnsupportedOperationException e) {
             return; // skip this test if one of those calls is unsupported
         } finally {
-            _pool.close();
+            pool.close();
         }
     }
 
     @Test
     public void testBaseBorrow() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException uoe) {
             return; // skip this test if unsupported
         }
         final Object keya = makeKey(0);
         final Object keyb = makeKey(1);
-        assertEquals(getNthObject(keya,0),_pool.borrowObject(keya),"1");
-        assertEquals(getNthObject(keyb,0),_pool.borrowObject(keyb),"2");
-        assertEquals(getNthObject(keyb,1),_pool.borrowObject(keyb),"3");
-        assertEquals(getNthObject(keya,1),_pool.borrowObject(keya),"4");
-        assertEquals(getNthObject(keyb,2),_pool.borrowObject(keyb),"5");
-        assertEquals(getNthObject(keya,2),_pool.borrowObject(keya),"6");
-        _pool.close();
+        assertEquals(getNthObject(keya,0),pool.borrowObject(keya),"1");
+        assertEquals(getNthObject(keyb,0),pool.borrowObject(keyb),"2");
+        assertEquals(getNthObject(keyb,1),pool.borrowObject(keyb),"3");
+        assertEquals(getNthObject(keya,1),pool.borrowObject(keya),"4");
+        assertEquals(getNthObject(keyb,2),pool.borrowObject(keyb),"5");
+        assertEquals(getNthObject(keya,2),pool.borrowObject(keya),"6");
+        pool.close();
     }
 
     @Test
     public void testBaseBorrowReturn() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException uoe) {
             return; // skip this test if unsupported
         }
         final Object keya = makeKey(0);
-        Object obj0 = _pool.borrowObject(keya);
+        Object obj0 = pool.borrowObject(keya);
         assertEquals(getNthObject(keya,0),obj0);
-        Object obj1 = _pool.borrowObject(keya);
+        Object obj1 = pool.borrowObject(keya);
         assertEquals(getNthObject(keya,1),obj1);
-        Object obj2 = _pool.borrowObject(keya);
+        Object obj2 = pool.borrowObject(keya);
         assertEquals(getNthObject(keya,2),obj2);
-        _pool.returnObject(keya,obj2);
-        obj2 = _pool.borrowObject(keya);
+        pool.returnObject(keya,obj2);
+        obj2 = pool.borrowObject(keya);
         assertEquals(getNthObject(keya,2),obj2);
-        _pool.returnObject(keya,obj1);
-        obj1 = _pool.borrowObject(keya);
+        pool.returnObject(keya,obj1);
+        obj1 = pool.borrowObject(keya);
         assertEquals(getNthObject(keya,1),obj1);
-        _pool.returnObject(keya,obj0);
-        _pool.returnObject(keya,obj2);
-        obj2 = _pool.borrowObject(keya);
+        pool.returnObject(keya,obj0);
+        pool.returnObject(keya,obj2);
+        obj2 = pool.borrowObject(keya);
         if (isLifo()) {
             assertEquals(getNthObject(keya,2),obj2);
         }
         if (isFifo()) {
             assertEquals(getNthObject(keya,0),obj2);
         }
-        obj0 = _pool.borrowObject(keya);
+        obj0 = pool.borrowObject(keya);
         if (isLifo()) {
             assertEquals(getNthObject(keya,0),obj0);
         }
         if (isFifo()) {
             assertEquals(getNthObject(keya,2),obj0);
         }
-        _pool.close();
+        pool.close();
     }
 
     @Test
     public void testBaseClear() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException uoe) {
             return; // skip this test if unsupported
         }
         final Object keya = makeKey(0);
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        final Object obj0 = _pool.borrowObject(keya);
-        final Object obj1 = _pool.borrowObject(keya);
-        assertEquals(2,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        _pool.returnObject(keya,obj1);
-        _pool.returnObject(keya,obj0);
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(2,_pool.getNumIdle(keya));
-        _pool.clear(keya);
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        final Object obj2 = _pool.borrowObject(keya);
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        final Object obj0 = pool.borrowObject(keya);
+        final Object obj1 = pool.borrowObject(keya);
+        assertEquals(2,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        pool.returnObject(keya,obj1);
+        pool.returnObject(keya,obj0);
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(2,pool.getNumIdle(keya));
+        pool.clear(keya);
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        final Object obj2 = pool.borrowObject(keya);
         assertEquals(getNthObject(keya,2),obj2);
-        _pool.close();
+        pool.close();
     }
 
     @Test
     public void testBaseInvalidateObject() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException uoe) {
             return; // skip this test if unsupported
         }
         final Object keya = makeKey(0);
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        final Object obj0 = _pool.borrowObject(keya);
-        final Object obj1 = _pool.borrowObject(keya);
-        assertEquals(2,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        _pool.invalidateObject(keya,obj0);
-        assertEquals(1,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        _pool.invalidateObject(keya,obj1);
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        _pool.close();
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        final Object obj0 = pool.borrowObject(keya);
+        final Object obj1 = pool.borrowObject(keya);
+        assertEquals(2,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        pool.invalidateObject(keya,obj0);
+        assertEquals(1,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        pool.invalidateObject(keya,obj1);
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        pool.close();
     }
 
     @Test
     public void testBaseNumActiveNumIdle() throws Exception {
         try {
-            _pool = makeEmptyPool(3);
+            pool = makeEmptyPool(3);
         } catch(final UnsupportedOperationException uoe) {
             return; // skip this test if unsupported
         }
         final Object keya = makeKey(0);
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        final Object obj0 = _pool.borrowObject(keya);
-        assertEquals(1,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        final Object obj1 = _pool.borrowObject(keya);
-        assertEquals(2,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        _pool.returnObject(keya,obj1);
-        assertEquals(1,_pool.getNumActive(keya));
-        assertEquals(1,_pool.getNumIdle(keya));
-        _pool.returnObject(keya,obj0);
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(2,_pool.getNumIdle(keya));
-
-        assertEquals(0,_pool.getNumActive("xyzzy12345"));
-        assertEquals(0,_pool.getNumIdle("xyzzy12345"));
-
-        _pool.close();
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        final Object obj0 = pool.borrowObject(keya);
+        assertEquals(1,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        final Object obj1 = pool.borrowObject(keya);
+        assertEquals(2,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        pool.returnObject(keya,obj1);
+        assertEquals(1,pool.getNumActive(keya));
+        assertEquals(1,pool.getNumIdle(keya));
+        pool.returnObject(keya,obj0);
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(2,pool.getNumIdle(keya));
+
+        assertEquals(0,pool.getNumActive("xyzzy12345"));
+        assertEquals(0,pool.getNumIdle("xyzzy12345"));
+
+        pool.close();
     }
 
     @Test
     public void testBaseNumActiveNumIdle2() throws Exception {
         try {
-            _pool = makeEmptyPool(6);
+            pool = makeEmptyPool(6);
         } catch(final UnsupportedOperationException uoe) {
             return; // skip this test if unsupported
         }
         final Object keya = makeKey(0);
         final Object keyb = makeKey(1);
-        assertEquals(0,_pool.getNumActive());
-        assertEquals(0,_pool.getNumIdle());
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        assertEquals(0,_pool.getNumActive(keyb));
-        assertEquals(0,_pool.getNumIdle(keyb));
-
-        final Object objA0 = _pool.borrowObject(keya);
-        final Object objB0 = _pool.borrowObject(keyb);
-
-        assertEquals(2,_pool.getNumActive());
-        assertEquals(0,_pool.getNumIdle());
-        assertEquals(1,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        assertEquals(1,_pool.getNumActive(keyb));
-        assertEquals(0,_pool.getNumIdle(keyb));
-
-        final Object objA1 = _pool.borrowObject(keya);
-        final Object objB1 = _pool.borrowObject(keyb);
-
-        assertEquals(4,_pool.getNumActive());
-        assertEquals(0,_pool.getNumIdle());
-        assertEquals(2,_pool.getNumActive(keya));
-        assertEquals(0,_pool.getNumIdle(keya));
-        assertEquals(2,_pool.getNumActive(keyb));
-        assertEquals(0,_pool.getNumIdle(keyb));
-
-        _pool.returnObject(keya,objA0);
-        _pool.returnObject(keyb,objB0);
-
-        assertEquals(2,_pool.getNumActive());
-        assertEquals(2,_pool.getNumIdle());
-        assertEquals(1,_pool.getNumActive(keya));
-        assertEquals(1,_pool.getNumIdle(keya));
-        assertEquals(1,_pool.getNumActive(keyb));
-        assertEquals(1,_pool.getNumIdle(keyb));
-
-        _pool.returnObject(keya,objA1);
-        _pool.returnObject(keyb,objB1);
-
-        assertEquals(0,_pool.getNumActive());
-        assertEquals(4,_pool.getNumIdle());
-        assertEquals(0,_pool.getNumActive(keya));
-        assertEquals(2,_pool.getNumIdle(keya));
-        assertEquals(0,_pool.getNumActive(keyb));
-        assertEquals(2,_pool.getNumIdle(keyb));
-
-        _pool.close();
+        assertEquals(0,pool.getNumActive());
+        assertEquals(0,pool.getNumIdle());
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        assertEquals(0,pool.getNumActive(keyb));
+        assertEquals(0,pool.getNumIdle(keyb));
+
+        final Object objA0 = pool.borrowObject(keya);
+        final Object objB0 = pool.borrowObject(keyb);
+
+        assertEquals(2,pool.getNumActive());
+        assertEquals(0,pool.getNumIdle());
+        assertEquals(1,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        assertEquals(1,pool.getNumActive(keyb));
+        assertEquals(0,pool.getNumIdle(keyb));
+
+        final Object objA1 = pool.borrowObject(keya);
+        final Object objB1 = pool.borrowObject(keyb);
+
+        assertEquals(4,pool.getNumActive());
+        assertEquals(0,pool.getNumIdle());
+        assertEquals(2,pool.getNumActive(keya));
+        assertEquals(0,pool.getNumIdle(keya));
+        assertEquals(2,pool.getNumActive(keyb));
+        assertEquals(0,pool.getNumIdle(keyb));
+
+        pool.returnObject(keya,objA0);
+        pool.returnObject(keyb,objB0);
+
+        assertEquals(2,pool.getNumActive());
+        assertEquals(2,pool.getNumIdle());
+        assertEquals(1,pool.getNumActive(keya));
+        assertEquals(1,pool.getNumIdle(keya));
+        assertEquals(1,pool.getNumActive(keyb));
+        assertEquals(1,pool.getNumIdle(keyb));
+
+        pool.returnObject(keya,objA1);
+        pool.returnObject(keyb,objB1);
+
+        assertEquals(0,pool.getNumActive());
+        assertEquals(4,pool.getNumIdle());
+        assertEquals(0,pool.getNumActive(keya));
+        assertEquals(2,pool.getNumIdle(keya));
+        assertEquals(0,pool.getNumActive(keyb));
+        assertEquals(2,pool.getNumIdle(keyb));
+
+        pool.close();
     }
 
     @Test
diff --git 
a/src/test/java/org/apache/commons/pool2/impl/TestAbandonedKeyedObjectPool.java 
b/src/test/java/org/apache/commons/pool2/impl/TestAbandonedKeyedObjectPool.java
index 70a02f2..7e93c5b 100644
--- 
a/src/test/java/org/apache/commons/pool2/impl/TestAbandonedKeyedObjectPool.java
+++ 
b/src/test/java/org/apache/commons/pool2/impl/TestAbandonedKeyedObjectPool.java
@@ -47,16 +47,16 @@ import org.junit.jupiter.api.Test;
 public class TestAbandonedKeyedObjectPool {
 
     class ConcurrentBorrower extends Thread {
-        private final ArrayList<PooledTestObject> _borrowed;
+        private final ArrayList<PooledTestObject> borrowed;
 
         public ConcurrentBorrower(final ArrayList<PooledTestObject> borrowed) {
-            _borrowed = borrowed;
+            this.borrowed = borrowed;
         }
 
         @Override
         public void run() {
             try {
-                _borrowed.add(pool.borrowObject(0));
+                borrowed.add(pool.borrowObject(0));
             } catch (final Exception e) {
                 // expected in most cases
             }
diff --git 
a/src/test/java/org/apache/commons/pool2/impl/TestAbandonedObjectPool.java 
b/src/test/java/org/apache/commons/pool2/impl/TestAbandonedObjectPool.java
index b2e37f1..e69902e 100644
--- a/src/test/java/org/apache/commons/pool2/impl/TestAbandonedObjectPool.java
+++ b/src/test/java/org/apache/commons/pool2/impl/TestAbandonedObjectPool.java
@@ -45,17 +45,17 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 class PooledTestObject implements TrackedUse {
-    private static final AtomicInteger hash = new AtomicInteger();
+    private static final AtomicInteger ATOMIC_HASH = new AtomicInteger();
     private static final Instant INSTANT_0 = Instant.ofEpochMilli(0);
     private static final Instant INSTANT_1 = Instant.ofEpochMilli(1);
     private boolean active;
     private boolean destroyed;
-    private int _hash;
-    private boolean _abandoned;
+    private int hash;
+    private boolean abandoned;
     private boolean detached;  // destroy-abandoned "detaches"
 
     public PooledTestObject() {
-        _hash = hash.incrementAndGet();
+        this.hash = ATOMIC_HASH.incrementAndGet();
     }
 
     public void destroy(final DestroyMode mode) {
@@ -75,7 +75,7 @@ class PooledTestObject implements TrackedUse {
 
     @Override
     public long getLastUsed() {
-        if (_abandoned) {
+        if (abandoned) {
             // Abandoned object sweep will occur no matter what the value of 
removeAbandonedTimeout,
             // because this indicates that this object was last used decades 
ago
             return 1;
@@ -86,7 +86,7 @@ class PooledTestObject implements TrackedUse {
 
     @Override
     public Instant getLastUsedInstant() {
-        if (_abandoned) {
+        if (abandoned) {
             // Abandoned object sweep will occur no matter what the value of 
removeAbandonedTimeout,
             // because this indicates that this object was last used decades 
ago
             return INSTANT_1;
@@ -97,7 +97,7 @@ class PooledTestObject implements TrackedUse {
 
     @Override
     public int hashCode() {
-        return _hash;
+        return hash;
     }
 
     public synchronized boolean isActive() {
@@ -113,7 +113,7 @@ class PooledTestObject implements TrackedUse {
     }
 
     public void setAbandoned(final boolean b) {
-        _abandoned = b;
+        abandoned = b;
     }
 
     public synchronized void setActive(final boolean b) {
@@ -127,16 +127,16 @@ class PooledTestObject implements TrackedUse {
 public class TestAbandonedObjectPool {
 
     class ConcurrentBorrower extends Thread {
-        private final ArrayList<PooledTestObject> _borrowed;
+        private final ArrayList<PooledTestObject> borrowed;
 
         public ConcurrentBorrower(final ArrayList<PooledTestObject> borrowed) {
-            _borrowed = borrowed;
+            this.borrowed = borrowed;
         }
 
         @Override
         public void run() {
             try {
-                _borrowed.add(pool.borrowObject());
+                borrowed.add(pool.borrowObject());
             } catch (final Exception e) {
                 // expected in most cases
             }
diff --git 
a/src/test/java/org/apache/commons/pool2/impl/TestGenericKeyedObjectPool.java 
b/src/test/java/org/apache/commons/pool2/impl/TestGenericKeyedObjectPool.java
index f4bf94f..91bb642 100644
--- 
a/src/test/java/org/apache/commons/pool2/impl/TestGenericKeyedObjectPool.java
+++ 
b/src/test/java/org/apache/commons/pool2/impl/TestGenericKeyedObjectPool.java
@@ -297,19 +297,19 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
      * the provided pool with the specified key and returns it
      */
     static class SimpleTestThread<T> implements Runnable {
-        private final KeyedObjectPool<String,T> _pool;
-        private final String _key;
+        private final KeyedObjectPool<String,T> pool;
+        private final String key;
 
         public SimpleTestThread(final KeyedObjectPool<String,T> pool, final 
String key) {
-            _pool = pool;
-            _key = key;
+            this.pool = pool;
+            this.key = key;
         }
 
         @Override
         public void run() {
             try {
-                final T obj = _pool.borrowObject(_key);
-                _pool.returnObject(_key, obj);
+                final T obj = pool.borrowObject(key);
+                pool.returnObject(key, obj);
             } catch (final Exception e) {
                 // Ignore
             }
@@ -339,26 +339,26 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
     }
 
     static class TestThread<T> implements Runnable {
-        private final java.util.Random _random = new java.util.Random();
+        private final java.util.Random random = new java.util.Random();
 
         /** GKOP to hit */
-        private final KeyedObjectPool<String,T> _pool;
+        private final KeyedObjectPool<String,T> pool;
         /** number of borrow/return iterations */
-        private final int _iter;
+        private final int iter;
         /** delay before borrow */
-        private final int _startDelay;
+        private final int startDelay;
         /** delay before return */
-        private final int _holdTime;
+        private final int holdTime;
         /** whether or not delays are random (with max = configured values) */
-        private final boolean _randomDelay;
+        private final boolean randomDelay;
         /** expected object */
-        private final T _expectedObject;
+        private final T expectedObject;
         /** key used in borrow / return sequence - null means random */
-        private final String _key;
+        private final String key;
 
-        private volatile boolean _complete;
-        private volatile boolean _failed;
-        private volatile Exception _exception;
+        private volatile boolean complete;
+        private volatile boolean failed;
+        private volatile Exception exception;
 
         public TestThread(final KeyedObjectPool<String,T> pool) {
             this(pool, 100, 50, 50, true, null, null);
@@ -374,57 +374,57 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
 
         public TestThread(final KeyedObjectPool<String,T> pool, final int 
iter, final int startDelay,
             final int holdTime, final boolean randomDelay, final T 
expectedObject, final String key) {
-            _pool = pool;
-            _iter = iter;
-            _startDelay = startDelay;
-            _holdTime = holdTime;
-            _randomDelay = randomDelay;
-            _expectedObject = expectedObject;
-            _key = key;
+            this.pool = pool;
+            this.iter = iter;
+            this.startDelay = startDelay;
+            this.holdTime = holdTime;
+            this.randomDelay = randomDelay;
+            this.expectedObject = expectedObject;
+            this.key = key;
 
         }
 
         public boolean complete() {
-            return _complete;
+            return complete;
         }
 
         public boolean failed() {
-            return _failed;
+            return failed;
         }
 
         @Override
         public void run() {
-            for(int i=0;i<_iter;i++) {
-                final String key = _key == null ? 
String.valueOf(_random.nextInt(3)) : _key;
-                Waiter.sleepQuietly(_randomDelay ? 
_random.nextInt(_startDelay) : _startDelay);
+            for(int i=0;i<iter;i++) {
+                final String actualKey = key == null ? 
String.valueOf(random.nextInt(3)) : key;
+                Waiter.sleepQuietly(randomDelay ? random.nextInt(startDelay) : 
startDelay);
                 T obj = null;
                 try {
-                    obj = _pool.borrowObject(key);
+                    obj = pool.borrowObject(actualKey);
                 } catch(final Exception e) {
-                    _exception = e;
-                    _failed = true;
-                    _complete = true;
+                    exception = e;
+                    failed = true;
+                    complete = true;
                     break;
                 }
 
-                if (_expectedObject != null && !_expectedObject.equals(obj)) {
-                    _exception = new Exception("Expected: "+_expectedObject+ " 
found: "+obj);
-                    _failed = true;
-                    _complete = true;
+                if (expectedObject != null && !expectedObject.equals(obj)) {
+                    exception = new Exception("Expected: "+expectedObject+ " 
found: "+obj);
+                    failed = true;
+                    complete = true;
                     break;
                 }
 
-                Waiter.sleepQuietly(_randomDelay ? _random.nextInt(_holdTime) 
: _holdTime);
+                Waiter.sleepQuietly(randomDelay ? random.nextInt(holdTime) : 
holdTime);
                 try {
-                    _pool.returnObject(key,obj);
+                    pool.returnObject(actualKey,obj);
                 } catch(final Exception e) {
-                    _exception = e;
-                    _failed = true;
-                    _complete = true;
+                    exception = e;
+                    failed = true;
+                    complete = true;
                     break;
                 }
             }
-            _complete = true;
+            complete = true;
         }
     }
 
@@ -433,10 +433,10 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
      * the provided pool with the specified key and returns it after a wait
      */
     static class WaitingTestThread extends Thread {
-        private final KeyedObjectPool<String,String> _pool;
-        private final String _key;
-        private final long _pause;
-        private Throwable _thrown;
+        private final KeyedObjectPool<String,String> pool;
+        private final String key;
+        private final long pause;
+        private Throwable thrown;
 
         private long preBorrowMillis; // just before borrow
         private long postBorrowMillis; //  borrow returned
@@ -445,24 +445,24 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
         private String objectId;
 
         public WaitingTestThread(final KeyedObjectPool<String,String> pool, 
final String key, final long pause) {
-            _pool = pool;
-            _key = key;
-            _pause = pause;
-            _thrown = null;
+            this.pool = pool;
+            this.key = key;
+            this.pause = pause;
+            this.thrown = null;
         }
 
         @Override
         public void run() {
             try {
                 preBorrowMillis = System.currentTimeMillis();
-                final String obj = _pool.borrowObject(_key);
+                final String obj = pool.borrowObject(key);
                 objectId = obj;
                 postBorrowMillis = System.currentTimeMillis();
-                Thread.sleep(_pause);
-                _pool.returnObject(_key, obj);
+                Thread.sleep(pause);
+                pool.returnObject(key, obj);
                 postReturnMillis = System.currentTimeMillis();
             } catch (final Exception e) {
-                _thrown = e;
+                thrown = e;
             } finally{
                 endedMillis = System.currentTimeMillis();
             }
@@ -846,7 +846,7 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
             }
             if(testThread.failed()) {
                 fail("Thread failed: " + threads.indexOf(testThread) + "\n" +
-                        getExceptionTrace(testThread._exception));
+                        getExceptionTrace(testThread.exception));
             }
         }
     }
@@ -980,7 +980,7 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
                 Waiter.sleepQuietly(500L);
             }
             if (threads[i].failed()) {
-                fail("Thread " + i + " failed: " + 
threads[i]._exception.toString());
+                fail("Thread " + i + " failed: " + 
threads[i].exception.toString());
             }
         }
     }
@@ -1575,8 +1575,8 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
             Thread.sleep(20);
             pool.invalidateObject("one", obj);
             Thread.sleep(600); // Wait for thread2 to timeout
-            if (thread2._thrown != null) {
-                fail(thread2._thrown.toString());
+            if (thread2.thrown != null) {
+                fail(thread2.thrown.toString());
             }
         }
     }
@@ -1963,8 +1963,8 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
         assertFalse(threadA.isAlive());
         assertFalse(threadB.isAlive());
 
-        assertFalse(testA._failed);
-        assertFalse(testB._failed);
+        assertFalse(testA.failed);
+        assertFalse(testB.failed);
     }
 
     @Test
@@ -2007,7 +2007,7 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
         int failed = 0;
         for (final WaitingTestThread element : wtt) {
             element.join();
-            if (element._thrown != null){
+            if (element.thrown != null){
                 failed++;
             }
         }
@@ -2027,7 +2027,7 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
                         " BorrowTime: " + (wt.postBorrowMillis != 0 ? 
wt.postBorrowMillis - wt.preBorrowMillis : -1) +
                         " PostReturn: " + (wt.postReturnMillis != 0 ? 
wt.postReturnMillis - originMillis : -1) +
                         " Ended: " + (wt.endedMillis - originMillis) +
-                        " Key: " + (wt._key) +
+                        " Key: " + (wt.key) +
                         " ObjId: " + wt.objectId
                         );
             }
@@ -2506,7 +2506,7 @@ public class TestGenericKeyedObjectPool extends 
TestKeyedObjectPool {
         Thread.sleep(200);
 
         // Check thread was interrupted
-        assertTrue(wtt._thrown instanceof InterruptedException);
+        assertTrue(wtt.thrown instanceof InterruptedException);
     }
 
 }
diff --git 
a/src/test/java/org/apache/commons/pool2/impl/TestGenericObjectPool.java 
b/src/test/java/org/apache/commons/pool2/impl/TestGenericObjectPool.java
index 430e7d3..4b7b980 100644
--- a/src/test/java/org/apache/commons/pool2/impl/TestGenericObjectPool.java
+++ b/src/test/java/org/apache/commons/pool2/impl/TestGenericObjectPool.java
@@ -441,29 +441,29 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
     static class TestThread<T> implements Runnable {
 
         /** source of random delay times */
-        private final java.util.Random _random;
+        private final java.util.Random random;
 
         /** pool to borrow from */
-        private final ObjectPool<T> _pool;
+        private final ObjectPool<T> pool;
 
         /** number of borrow attempts */
-        private final int _iter;
+        private final int iter;
 
         /** delay before each borrow attempt */
-        private final int _startDelay;
+        private final int startDelay;
 
         /** time to hold each borrowed object before returning it */
-        private final int _holdTime;
+        private final int holdTime;
 
         /** whether or not start and hold time are randomly generated */
-        private final boolean _randomDelay;
+        private final boolean randomDelay;
 
         /** object expected to be borrowed (fail otherwise) */
-        private final Object _expectedObject;
+        private final Object expectedObject;
 
-        private volatile boolean _complete;
-        private volatile boolean _failed;
-        private volatile Throwable _error;
+        private volatile boolean complete;
+        private volatile boolean failed;
+        private volatile Throwable error;
 
         public TestThread(final ObjectPool<T> pool) {
             this(pool, 100, 50, true, null);
@@ -489,59 +489,57 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
 
         public TestThread(final ObjectPool<T> pool, final int iter, final int 
startDelay,
             final int holdTime, final boolean randomDelay, final Object obj) {
-        _pool = pool;
-        _iter = iter;
-        _startDelay = startDelay;
-        _holdTime = holdTime;
-        _randomDelay = randomDelay;
-        _random = _randomDelay ? new Random() : null;
-        _expectedObject = obj;
+       this.pool = pool;
+       this.iter = iter;
+       this.startDelay = startDelay;
+       this.holdTime = holdTime;
+       this.randomDelay = randomDelay;
+       this.random = this.randomDelay ? new Random() : null;
+       this.expectedObject = obj;
     }
 
         public boolean complete() {
-            return _complete;
+            return complete;
         }
 
         public boolean failed() {
-            return _failed;
+            return failed;
         }
 
         @Override
         public void run() {
-            for(int i=0;i<_iter;i++) {
-                final long startDelay =
-                    _randomDelay ? (long)_random.nextInt(_startDelay) : 
_startDelay;
-                final long holdTime =
-                    _randomDelay ? (long)_random.nextInt(_holdTime) : 
_holdTime;
-                Waiter.sleepQuietly(startDelay);
+            for (int i = 0; i < iter; i++) {
+                final long actualStartDelay = randomDelay ? (long) 
random.nextInt(startDelay) : startDelay;
+                final long actualHoldTime = randomDelay ? (long) 
random.nextInt(holdTime) : holdTime;
+                Waiter.sleepQuietly(actualStartDelay);
                 T obj = null;
                 try {
-                    obj = _pool.borrowObject();
-                } catch(final Exception e) {
-                    _error = e;
-                    _failed = true;
-                    _complete = true;
+                    obj = pool.borrowObject();
+                } catch (final Exception e) {
+                    error = e;
+                    failed = true;
+                    complete = true;
                     break;
                 }
 
-                if (_expectedObject != null && !_expectedObject.equals(obj)) {
-                    _error = new Throwable("Expected: "+_expectedObject+ " 
found: "+obj);
-                    _failed = true;
-                    _complete = true;
+                if (expectedObject != null && !expectedObject.equals(obj)) {
+                    error = new Throwable("Expected: " + expectedObject + " 
found: " + obj);
+                    failed = true;
+                    complete = true;
                     break;
                 }
 
-                Waiter.sleepQuietly(holdTime);
+                Waiter.sleepQuietly(actualHoldTime);
                 try {
-                    _pool.returnObject(obj);
-                } catch(final Exception e) {
-                    _error = e;
-                    _failed = true;
-                    _complete = true;
+                    pool.returnObject(obj);
+                } catch (final Exception e) {
+                    error = e;
+                    failed = true;
+                    complete = true;
                     break;
                 }
             }
-            _complete = true;
+            complete = true;
         }
     }
 
@@ -550,9 +548,9 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
      * the provided pool returns it after a wait
      */
     static class WaitingTestThread extends Thread {
-        private final GenericObjectPool<String> _pool;
-        private final long _pause;
-        private Throwable _thrown;
+        private final GenericObjectPool<String> pool;
+        private final long pause;
+        private Throwable thrown;
 
         private long preBorrowMillis; // just before borrow
         private long postBorrowMillis; //  borrow returned
@@ -561,23 +559,23 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
         private String objectId;
 
         public WaitingTestThread(final GenericObjectPool<String> pool, final 
long pause) {
-            _pool = pool;
-            _pause = pause;
-            _thrown = null;
+            this.pool = pool;
+            this.pause = pause;
+            this.thrown = null;
         }
 
         @Override
         public void run() {
             try {
                 preBorrowMillis = System.currentTimeMillis();
-                final String obj = _pool.borrowObject();
+                final String obj = pool.borrowObject();
                 objectId = obj;
                 postBorrowMillis = System.currentTimeMillis();
-                Thread.sleep(_pause);
-                _pool.returnObject(obj);
+                Thread.sleep(pause);
+                pool.returnObject(obj);
                 postReturnMillis = System.currentTimeMillis();
             } catch (final Throwable e) {
-                _thrown = e;
+                thrown = e;
             } finally{
                 endedMillis = System.currentTimeMillis();
             }
@@ -909,7 +907,7 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
                 Waiter.sleepQuietly(500L);
             }
             if (threads[i].failed()) {
-                fail("Thread " + i + " failed: " + 
threads[i]._error.toString());
+                fail("Thread " + i + " failed: " + 
threads[i].error.toString());
             }
         }
     }
@@ -1121,7 +1119,7 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
                 }
             }
             if(threads[i].failed()) {
-                fail("Thread "+i+" failed: "+threads[i]._error.toString());
+                fail("Thread "+i+" failed: "+threads[i].error.toString());
             }
         }
     }
@@ -1460,8 +1458,8 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
             assertFalse(thread1.isAlive());
             assertFalse(thread2.isAlive());
 
-            assertTrue(thread1._thrown instanceof UnknownError);
-            assertTrue(thread2._thrown instanceof UnknownError);
+            assertTrue(thread1.thrown instanceof UnknownError);
+            assertTrue(thread2.thrown instanceof UnknownError);
         }
     }
 
@@ -1917,8 +1915,8 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
             assertFalse(thread1.isAlive());
             assertFalse(thread2.isAlive());
 
-            assertTrue(thread1._thrown instanceof UnsupportedCharsetException);
-            assertTrue(thread2._thrown instanceof UnsupportedCharsetException);
+            assertTrue(thread1.thrown instanceof UnsupportedCharsetException);
+            assertTrue(thread2.thrown instanceof UnsupportedCharsetException);
         }
     }
 
@@ -2019,8 +2017,8 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
             Thread.sleep(20);
             pool.invalidateObject(obj);
             Thread.sleep(600); // Wait for thread2 to timeout
-            if (thread2._thrown != null) {
-                fail(thread2._thrown.toString());
+            if (thread2.thrown != null) {
+                fail(thread2.thrown.toString());
             }
         }
     }
@@ -2171,7 +2169,7 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
             try {
                 Waiter.sleepQuietly(delay);
                 obj = genericObjectPool.borrowObject();
-                // Under load, observed _numActive > _maxTotal
+                // Under load, observed numActive > maxTotal
                 if (genericObjectPool.getNumActive() > 
genericObjectPool.getMaxTotal()) {
                     throw new IllegalStateException("Too many active objects");
                 }
@@ -2196,8 +2194,8 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
                 Waiter.sleepQuietly(500L);
             }
             if (threads[i].failed()) {
-                threads[i]._error.printStackTrace();
-                fail("Thread " + i + " failed: " + 
threads[i]._error.toString());
+                threads[i].error.printStackTrace();
+                fail("Thread " + i + " failed: " + 
threads[i].error.toString());
             }
         }
     }
@@ -2272,7 +2270,7 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
             try {
                 Waiter.sleepQuietly(delay);
                 obj = genericObjectPool.borrowObject();
-                // Under load, observed _numActive > _maxTotal
+                // Under load, observed numActive > maxTotal
                 if (genericObjectPool.getNumActive() > 
genericObjectPool.getMaxTotal()) {
                     throw new IllegalStateException("Too many active objects");
                 }
@@ -2297,7 +2295,7 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
                 Waiter.sleepQuietly(500L);
             }
             if(threads[i].failed()) {
-                fail("Thread " + i + " failed: " + 
threads[i]._error.toString());
+                fail("Thread " + i + " failed: " + 
threads[i].error.toString());
             }
         }
     }
@@ -2345,7 +2343,7 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
         int failed = 0;
         for (final WaitingTestThread element : wtt) {
             element.join();
-            if (element._thrown != null){
+            if (element.thrown != null){
                 failed++;
             }
         }
@@ -3011,7 +3009,7 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
         Thread.sleep(200);
 
         // Check thread was interrupted
-        assertTrue(wtt._thrown instanceof InterruptedException);
+        assertTrue(wtt.thrown instanceof InterruptedException);
     }
 
     @Test
@@ -3036,7 +3034,7 @@ public class TestGenericObjectPool extends 
TestBaseObjectPool {
         Thread.sleep(200);
 
         // Check thread was interrupted
-        assertTrue(wtt._thrown instanceof InterruptedException);
+        assertTrue(wtt.thrown instanceof InterruptedException);
 
         // Return object to the pool
         genericObjectPool.returnObject(obj1);

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