diff -r 2016aba51689 -r 2a390122edff jdk/test/javax/swing/plaf/synth/SynthToolBarUI/6739756/bug6739756.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/plaf/synth/SynthToolBarUI/6739756/bug6739756.java	Tue Jun 15 21:32:59 2010 +0400
@@ -0,0 +1,59 @@
+/*
+ * 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 6739756
+ * @author Alexander Potochkin
+ * @summary JToolBar leaves space for non-visible items under Nimbus L&F
+ * @run main bug6739756
+ */
+
+import javax.swing.*;
+import java.awt.*;
+
+public class bug6739756 {
+
+    public static void main(String[] args) throws Exception {
+        try {
+           UIManager.setLookAndFeel(
+                   "com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+            return;
+        }
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                JToolBar tb = new JToolBar();
+                Dimension preferredSize = tb.getPreferredSize();
+                JButton button = new JButton("Test");
+                button.setVisible(false);
+                tb.add(button);
+                if (!preferredSize.equals(tb.getPreferredSize())) {
+                    throw new RuntimeException("Toolbar's preferredSize is wrong");
+                }
+            }
+        });
+    }
+}