From 6dddd7cdf8f373fe3100e3001f007eb50f274351 Mon Sep 17 00:00:00 2001
From: alexp <unknown>
Date: Tue, 15 Sep 2009 16:26:40 +0400
Subject: [PATCH] 6875716: JLayer.remove((Component)null) should behave
 consistently in (not) throwing NPE Reviewed-by: rupashka

---
 src/share/classes/javax/swing/JLayer.java     |  4 +-
 .../swing/JLayer/6875716/bug6875716.java      | 46 +++++++++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 test/javax/swing/JLayer/6875716/bug6875716.java

diff --git a/src/share/classes/javax/swing/JLayer.java b/src/share/classes/javax/swing/JLayer.java
index c020d9986..93f4b7997 100644
--- a/src/share/classes/javax/swing/JLayer.java
+++ b/src/share/classes/javax/swing/JLayer.java
@@ -333,7 +333,9 @@ public final class JLayer<V extends Component>
      * {@inheritDoc}
      */
     public void remove(Component comp) {
-        if (comp == getView()) {
+        if (comp == null) {
+            super.remove(comp);
+        } else if (comp == getView()) {
             setView(null);
         } else if (comp == getGlassPane()) {
             setGlassPane(null);
diff --git a/test/javax/swing/JLayer/6875716/bug6875716.java b/test/javax/swing/JLayer/6875716/bug6875716.java
new file mode 100644
index 000000000..c59c4544a
--- /dev/null
+++ b/test/javax/swing/JLayer/6875716/bug6875716.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* @test
+ * @bug 6875716
+ * @summary JLayer.remove((Component)null) should behave consistently in (not) throwing NPE
+ * @author Alexander Potochkin
+ */
+
+import javax.swing.*;
+import java.awt.*;
+
+public class bug6875716 {
+
+    public static void main(String[] args) throws Exception {
+        JLayer<Component> layer = new JLayer<Component>(new Component(){});
+        layer.setGlassPane(null);
+        try {
+            layer.remove((Component)null);
+        } catch (NullPointerException e) {
+            //this is what we expect
+            return;
+        }
+        throw new RuntimeException("Test failed");
+    }
+}
-- 
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