test/java/awt/Mixing/AWT_Mixing/JComboBoxOverlapping.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2017, 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.

@@ -25,13 +25,13 @@
 import java.awt.Dimension;
 import java.awt.Point;
 import java.awt.Robot;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
-import javax.swing.BoxLayout;
-import javax.swing.JComboBox;
-import javax.swing.JFrame;
+import java.lang.reflect.InvocationTargetException;
+import javax.swing.*;
+
 import test.java.awt.regtesthelpers.Util;
 
 
 /**
  * AWT/Swing overlapping test for {@link javax.swing.JCombobox } component.

@@ -53,20 +53,22 @@
 public class JComboBoxOverlapping extends OverlappingTestBase {
 
     private boolean lwClicked = false;
     private Point loc;
     private Point loc2;
+    private JComboBox cb;
+    private JFrame frame;
 
     {testEmbeddedFrame = true;}
 
     protected void prepareControls() {
-        final JFrame frame = new JFrame("Mixing : Dropdown Overlapping test");
+        frame = new JFrame("Mixing : Dropdown Overlapping test");
         frame.getContentPane().setLayout(new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS));
         frame.setSize(200, 200);
         frame.setVisible(true);
 
-        final JComboBox cb = new JComboBox(petStrings);
+        cb = new JComboBox(petStrings);
         cb.setPreferredSize(new Dimension(frame.getContentPane().getWidth(), 20));
         cb.addActionListener(new ActionListener() {
 
             public void actionPerformed(ActionEvent e) {
                 if (e.getSource() == cb) {

@@ -76,19 +78,27 @@
         });
 
         frame.add(cb);
         propagateAWTControls(frame);
         frame.setVisible(true);
-        loc = cb.getLocationOnScreen();
-        loc2 = frame.getContentPane().getLocationOnScreen();
     }
 
     @Override
     protected boolean performTest() {
         // run robot
         Robot robot = Util.createRobot();
         robot.setAutoDelay(ROBOT_DELAY);
+        robot.waitForIdle();
+        robot.delay(200);
+        try {
+            SwingUtilities.invokeAndWait(() -> {
+                loc = cb.getLocationOnScreen();
+                loc2 = frame.getContentPane().getLocationOnScreen();
+            });
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
 
         loc2.translate(75, 75);
         pixelPreCheck(robot, loc2, currentAwtControl);
 
         loc.translate(3, 3);