src/java.desktop/unix/classes/sun/awt/X11/XWindowPeer.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 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

@@ -206,11 +206,11 @@
         ((X11GraphicsDevice)gc.getDevice()).addDisplayChangedListener(this);
     }
 
     protected String getWMName() {
         String name = target.getName();
-        if (name == null || name.trim().equals("")) {
+        if (name == null || name.trim().isEmpty()) {
             name = " ";
         }
         return name;
     }