test/javax/swing/JFrame/HangNonVolatileBuffer/HangNonVolatileBuffer.java

rev 14989 : 8160974: [TESTBUG] Mark more headful tests with @key headful.

@@ -26,10 +26,11 @@
 import javax.swing.JFrame;
 import javax.swing.SwingUtilities;
 
 /**
  * @test
+ * @key headful
  * @bug 8029455
  * @summary Swing should not hang if non-volatile image is used as a backbuffer.
  * @run main/othervm -Dswing.volatileImageBufferEnabled=false HangNonVolatileBuffer
  */
 public final class HangNonVolatileBuffer {