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

@@ -421,11 +421,11 @@
             StackTraceElement[] trace = (new Throwable()).getStackTrace();
             int bottom = trace.length - 1;
             if (bottom >= 0) {
                 mainClassName = trace[bottom].getClassName();
             }
-            if (mainClassName == null || mainClassName.equals("")) {
+            if (mainClassName == null || mainClassName.isEmpty()) {
                 mainClassName = "AWT";
             }
             awtAppClassName = getCorrectXIDString(mainClassName);
 
             init();