Flip null test

Author: garydgregory

src/main/java/org/apache/commons/dbcp2/DelegatingConnection.java

@@ -112,7 +112,7 @@ protected void activate() {
      */
     protected void checkOpen() throws SQLException {
         if (closed) {
-            if (null != connection) {
+            if (connection != null) {
                 String label;
                 try {
                     label = connection.toString();

src/main/java/org/apache/commons/dbcp2/PoolableConnectionFactory.java

@@ -779,7 +779,7 @@ public void setMaxOpenPrepatedStatements(final int maxOpenPreparedStatements) {
      *            the {@link ObjectPool} in which to pool those {@link Connection}s
      */
     public synchronized void setPool(final ObjectPool<PoolableConnection> pool) {
-        if (null != this.pool && pool != this.pool) {
+        if (this.pool != null && pool != this.pool) {
             Utils.closeQuietly(this.pool);
         }
         this.pool = pool;

src/main/java/org/apache/commons/dbcp2/PoolingConnection.java

@@ -110,7 +110,7 @@ public void activateObject(final PStmtKey key, final PooledObject<DelegatingPrep
     @Override
     public synchronized void close() throws SQLException {
         try {
-            if (null != stmtPool) {
+            if (stmtPool != null) {
                 final KeyedObjectPool<PStmtKey, DelegatingPreparedStatement> oldPool = stmtPool;
                 stmtPool = null;
                 try {

src/main/java/org/apache/commons/dbcp2/datasources/CPDSConnectionFactory.java

@@ -130,7 +130,7 @@ public void connectionClosed(final ConnectionEvent event) {
     @Override
     public void connectionErrorOccurred(final ConnectionEvent event) {
         final PooledConnection pc = (PooledConnection) event.getSource();
-        if (null != event.getSQLException()) {
+        if (event.getSQLException() != null) {
             System.err.println("CLOSING DOWN CONNECTION DUE TO INTERNAL ERROR (" + event.getSQLException() + ")");
         }
         pc.removeConnectionEventListener(this);

src/main/java/org/apache/commons/dbcp2/datasources/KeyedCPDSConnectionFactory.java

@@ -117,7 +117,7 @@ public void connectionClosed(final ConnectionEvent event) {
     @Override
     public void connectionErrorOccurred(final ConnectionEvent event) {
         final PooledConnection pc = (PooledConnection) event.getSource();
-        if (null != event.getSQLException()) {
+        if (event.getSQLException() != null) {
             System.err.println("CLOSING DOWN CONNECTION DUE TO INTERNAL ERROR (" + event.getSQLException() + ")");
         }
         pc.removeConnectionEventListener(this);