7087429: Constructor of java.beans.PropertyChangeEvent should declare thrown NPE for null source

Reviewed-by: rupashka

src/share/classes/java/beans/PropertyChangeEvent.java

 /*
- * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2011, 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
@@ -25,6 +25,8 @@
 
 package java.beans;
 
+import java.util.EventObject;
+
 /**
  * A "PropertyChange" event gets delivered whenever a bean changes a "bound"
  * or "constrained" property.  A PropertyChangeEvent object is sent as an
@@ -42,21 +44,21 @@ package java.beans;
  * arbitrary set of if its properties have changed.  In this case the
  * old and new values should also be null.
  */
-
-public class PropertyChangeEvent extends java.util.EventObject {
+public class PropertyChangeEvent extends EventObject {
     private static final long serialVersionUID = 7042693688939648123L;
 
     /**
-     * Constructs a new <code>PropertyChangeEvent</code>.
+     * Constructs a new {@code PropertyChangeEvent}.
+     *
+     * @param source        the bean that fired the event
+     * @param propertyName  the programmatic name of the property that was changed
+     * @param oldValue      the old value of the property
+     * @param newValue      the new value of the property
      *
-     * @param source  The bean that fired the event.
-     * @param propertyName  The programmatic name of the property
-     *          that was changed.
-     * @param oldValue  The old value of the property.
-     * @param newValue  The new value of the property.
+     * @throws IllegalArgumentException if {@code source} is {@code null}
      */
     public PropertyChangeEvent(Object source, String propertyName,
-                                     Object oldValue, Object newValue) {
+                               Object oldValue, Object newValue) {
         super(source);
         this.propertyName = propertyName;
         this.newValue = newValue;

test/java/beans/PropertyChangeSupport/Test7087429.java

+/*
+ * Copyright (c) 2011, 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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 7087429
+ * @summary Tests IllegalArgumentException from the PropertyChangeEvent constructor
+ * @author Sergey Malenkov
+ */
+
+import java.beans.PropertyChangeEvent;
+
+public final class Test7087429 {
+    public static void main(String[] args) {
+        try {
+            new PropertyChangeEvent(null, null, null, null);
+        }
+        catch (IllegalArgumentException exception) {
+            if (exception.getMessage().equals("null source")) {
+                return;
+            }
+        }
+        throw new Error("IllegalArgumentException expected");
+    }
+}