test/java/awt/event/MouseEvent/MouseButtonsTest/MouseButtonsTest.java

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

@@ -36,10 +36,11 @@
 
 import static jdk.testlibrary.Asserts.*;
 
 /*
  * @test
+ * @key headful
  * @bug 8043126
  * @summary Check whether getButton() returns correct mouse button
  *          number when the mouse buttons are pressed and getModifiers()
  *          returns correct modifiers
  *