test/jdk/javax/swing/dnd/8139050/NativeErrorsInTableDnD.java

rev 47956 : 8191678: [TESTBUG] Add keyword headful in java/awt and javax tests.
Summary: Also fix some NPE thrown if run headless.

*** 38,51 ****
--- 38,53 ----
  import static javax.swing.UIManager.getInstalledLookAndFeels;
  
  /**
   * @test
   * @bug 8139050 8153871
+  * @key headful
   * @library ../../../../lib/testlibrary
   * @build ExtendedRobot
   * @run main/othervm/timeout=360 -Xcheck:jni NativeErrorsInTableDnD
   */
+ 
  public final class NativeErrorsInTableDnD {
  
      private static JFrame frame;
  
      private static volatile Rectangle bounds;