--- old/src/java.desktop/macosx/classes/sun/lwawt/LWToolkit.java	2016-04-12 16:33:55.000000000 +0530
+++ new/src/java.desktop/macosx/classes/sun/lwawt/LWToolkit.java	2016-04-12 16:33:55.000000000 +0530
@@ -399,6 +399,10 @@
     public final PrintJob getPrintJob(Frame frame, String doctitle,
                                       JobAttributes jobAttributes,
                                       PageAttributes pageAttributes) {
+        if (frame == null) {
+            throw new NullPointerException("frame must not be null");
+        }
+        
         if (GraphicsEnvironment.isHeadless()) {
             throw new IllegalArgumentException();
         }