--- a/jdk/test/sanity/client/lib/SwingSet3/src/com/sun/swingset3/demos/button/ButtonDemo.java	Wed Jul 05 21:38:12 2017 +0200
+++ b/jdk/test/sanity/client/lib/SwingSet3/src/com/sun/swingset3/demos/button/ButtonDemo.java	Mon Apr 25 16:29:50 2016 -0700
@@ -36,6 +36,7 @@
 
 import com.sun.swingset3.DemoProperties;
 import com.sun.swingset3.demos.JHyperlink;
+import java.lang.reflect.InvocationTargetException;
 
 /**
  *
@@ -210,10 +211,10 @@
         return panel;
     }
 
-    public static void main(String args[]) {
+    public static void main(String args[]) throws InterruptedException, InvocationTargetException {
         final ButtonDemo buttonDemo = new ButtonDemo();
 
-        javax.swing.SwingUtilities.invokeLater(() -> {
+        javax.swing.SwingUtilities.invokeAndWait(() -> {
             JFrame frame = new JFrame(DEMO_TITLE);
             frame.add(buttonDemo);
             frame.pack();