6788484: NPE in DefaultTableCellHeaderRenderer.getColumnSortOrder() with null table

Reviewed-by: rupashka

src/share/classes/sun/swing/table/DefaultTableCellHeaderRenderer.java

@@ -127,7 +127,7 @@ public class DefaultTableCellHeaderRenderer extends DefaultTableCellRenderer
 
     public static SortOrder getColumnSortOrder(JTable table, int column) {
         SortOrder rv = null;
-        if (table.getRowSorter() == null) {
+        if (table == null || table.getRowSorter() == null) {
             return rv;
         }
         java.util.List<? extends RowSorter.SortKey> sortKeys =

test/javax/swing/JTable/6788484/bug6788484.java

+/*
+ * Copyright 2010 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 6788484
+   @summary NPE in DefaultTableCellHeaderRenderer.getColumnSortOrder() with null table
+   @author Alexander Potochkin
+   @run main bug6788484
+*/
+import sun.swing.table.DefaultTableCellHeaderRenderer;
+
+import javax.swing.*;
+
+public class bug6788484 {
+
+    public static void main(String[] args) throws Exception {
+        DefaultTableCellHeaderRenderer.getColumnSortOrder(null, 0);
+    }
+}