Camcel-case internal names.
diff --git a/src/main/java/org/apache/commons/dbcp2/PoolingConnection.java b/src/main/java/org/apache/commons/dbcp2/PoolingConnection.java
index 18f68aa..72d3e61 100644
--- a/src/main/java/org/apache/commons/dbcp2/PoolingConnection.java
+++ b/src/main/java/org/apache/commons/dbcp2/PoolingConnection.java
@@ -62,7 +62,7 @@
     }

 

     /** Pool of {@link PreparedStatement}s. and {@link CallableStatement}s */

-    private KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> pstmtPool;

+    private KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> pStmtPool;

 

     private boolean clearStatementPoolOnReturn;

 

@@ -97,11 +97,11 @@
     @Override

     public synchronized void close() throws SQLException {

         try {

-            if (null != pstmtPool) {

-                final KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> oldpool = pstmtPool;

-                pstmtPool = null;

+            if (null != pStmtPool) {

+                final KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> oldPool = pStmtPool;

+                pStmtPool = null;

                 try {

-                    oldpool.close();

+                    oldPool.close();

                 } catch (final RuntimeException e) {

                     throw e;

                 } catch (final Exception e) {

@@ -125,9 +125,9 @@
      * @since 2.8.0

      */

     public void connectionReturnedToPool() throws SQLException {

-        if (pstmtPool != null && clearStatementPoolOnReturn) {

+        if (pStmtPool != null && clearStatementPoolOnReturn) {

             try {

-                pstmtPool.clear();

+                pStmtPool.clear();

             } catch (final Exception e) {

                 throw new SQLException("Error clearing statement pool", e);

             }

@@ -323,7 +323,7 @@
      * @since 2.8.0

      */

     public KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> getStatementPool() {

-        return pstmtPool;

+        return pStmtPool;

     }

 

     /**

@@ -344,11 +344,11 @@
         if (key.getStmtType() == StatementType.PREPARED_STATEMENT) {

             final PreparedStatement statement = (PreparedStatement) key.createStatement(getDelegate());

             @SuppressWarnings({"rawtypes", "unchecked" }) // Unable to find way to avoid this

-            final PoolablePreparedStatement pps = new PoolablePreparedStatement(statement, key, pstmtPool, this);

+            final PoolablePreparedStatement pps = new PoolablePreparedStatement(statement, key, pStmtPool, this);

             return new DefaultPooledObject<>(pps);

         }

         final CallableStatement statement = (CallableStatement) key.createStatement(getDelegate());

-        final PoolableCallableStatement pcs = new PoolableCallableStatement(statement, key, pstmtPool, this);

+        final PoolableCallableStatement pcs = new PoolableCallableStatement(statement, key, pStmtPool, this);

         return new DefaultPooledObject<>(pcs);

     }

 

@@ -459,11 +459,11 @@
      *             Wraps an underlying exception.

      */

     private PreparedStatement prepareStatement(final PStmtKey key) throws SQLException {

-        if (null == pstmtPool) {

+        if (null == pStmtPool) {

             throw new SQLException("Statement pool is null - closed or invalid PoolingConnection.");

         }

         try {

-            return pstmtPool.borrowObject(key);

+            return pStmtPool.borrowObject(key);

         } catch (final NoSuchElementException e) {

             throw new SQLException("MaxOpenPreparedStatements limit reached", e);

         } catch (final RuntimeException e) {

@@ -596,13 +596,13 @@
      *            the prepared statement pool.

      */

     public void setStatementPool(final KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> pool) {

-        pstmtPool = pool;

+        pStmtPool = pool;

     }

 

     @Override

     public synchronized String toString() {

-        if (pstmtPool != null) {

-            return "PoolingConnection: " + pstmtPool.toString();

+        if (pStmtPool != null) {

+            return "PoolingConnection: " + pStmtPool.toString();

         }

         return "PoolingConnection: null";

     }