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test/javax/swing/UI/UnninstallUIMemoryLeaks/UnninstallUIMemoryLeaks.java

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rev 17561 : 8185500: [TESTBUG] Add keywords headful/printer in java/awt and javax tests.
Summary: Add new keyword 'printer'. Some minor test fixes to show headless exception. Add some @requires windows.

@@ -29,10 +29,11 @@
 
 import static javax.swing.UIManager.getInstalledLookAndFeels;
 
 /**
  * @test
+ * @key headful
  * @bug 8134947
  * @author Sergey Bylokhov
  * @run main/timeout=300/othervm -Xmx12m -XX:+HeapDumpOnOutOfMemoryError UnninstallUIMemoryLeaks
  */
 public final class UnninstallUIMemoryLeaks {

@@ -52,11 +53,11 @@
                         }
                     });
                 }
             }
         } finally {
-            EventQueue.invokeAndWait(() -> frame.dispose());
+            if (frame != null) { EventQueue.invokeAndWait(() -> frame.dispose()); }
         }
     }
 
     private static void createGUI() throws Exception {
         EventQueue.invokeAndWait(() -> {
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