src/java.desktop/share/classes/javax/swing/plaf/metal/MetalButtonUI.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -200,11 +200,11 @@
         Rectangle focusRect = new Rectangle();
         String text = b.getText();
         boolean isIcon = b.getIcon() != null;
 
         // If there is text
-        if ( text != null && !text.equals( "" ) ) {
+        if ( text != null && !text.isEmpty()) {
             if ( !isIcon ) {
                 focusRect.setBounds( textRect );
             }
             else {
                 focusRect.setBounds( iconRect.union( textRect ) );