--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/javax/swing/JTableHeader/6442918/bug6442918a.java	Wed Sep 09 10:31:59 2015 +0300
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2015, 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 6442918 8005914
+   @summary Ensures that empty table headers do not show "..."
+   @author Shannon Hickey
+   @library ../../regtesthelpers
+   @build  Util
+   @run main/manual bug6442918a
+   @requires os.family == "windows"
+*/
+
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import javax.swing.JDialog;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTable;
+import javax.swing.JTextArea;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.table.DefaultTableCellRenderer;
+
+
+public class bug6442918a {
+
+    public static void main(String[] args) throws Throwable, Exception {
+        SwingUtilities.invokeAndWait(new Runnable() {
+            public void run() {
+                try {
+                    UIManager.setLookAndFeel("com.sun.java.swing.plaf"
+                                    + ".windows.WindowsLookAndFeel");
+                } catch (Exception e) {
+                    // test is for Windows look and feel
+                    throw new RuntimeException("Test is only for WLaF."
+                                   + e.getMessage());
+                }
+                runTest();
+            }
+        });
+    }
+
+    private static void runTest() {
+        JDialog dialog = Util
+                    .createModalDialogWithPassFailButtons("Empty header showing \"...\"");
+        String[] columnNames = {"", "", "", "", "Testing"};
+        String[][] data = {{"1", "2", "3", "4", "5"}};
+        JTable table = new JTable(data, columnNames);
+        DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
+        int tableCellWidth = renderer.getFontMetrics(renderer.getFont())
+                .stringWidth("test");
+        table.setPreferredScrollableViewportSize(new Dimension(
+                5 * tableCellWidth, 50));
+        JPanel p = new JPanel();
+        p.add(new JScrollPane(table));
+        dialog.add(p, BorderLayout.NORTH);
+        JTextArea area = new JTextArea();
+        String txt  = "\nInstructions:\n\n";
+               txt += "Only the last column header should show \"...\".";
+        area.setText(txt);
+        dialog.add(new JScrollPane(area), BorderLayout.CENTER);
+        dialog.pack();
+        dialog.setVisible(true);
+    }
+}

--- a/test/javax/swing/regtesthelpers/Util.java	Tue Sep 08 15:19:19 2015 -0700
+++ b/test/javax/swing/regtesthelpers/Util.java	Wed Sep 09 10:31:59 2015 +0300
@@ -41,6 +41,7 @@
  */
 
 public class Util {
+
     /**
      * Convert a rectangle from coordinate system of Component c to
      * screen coordinate system.
@@ -266,4 +267,42 @@
         result.add(KeyEvent.VK_ALT);
         return result;
     }
+
+   /**
+    * Creates and returns a JDialog with two button, one that says pass,
+    * another that says fail. The fail button is wired to call
+    * <code>uiTestFailed</code> with <code>failString</code> and the pass
+    * button is wired to invoked <code>uiTestPassed</code>.
+    * <p>The content pane of the JDialog uses a BorderLayout with the
+    * buttons inside a horizontal box with filler between them and the
+    * pass button on the left.
+    * <p>The returned Dialog has not been packed, or made visible, it is
+    * up to the caller to do that (after putting in some useful components).
+    */
+    public static JDialog createModalDialogWithPassFailButtons(final String failString) {
+        JDialog  retDialog = new JDialog();
+        Box      buttonBox = Box.createHorizontalBox();
+        JButton  passButton = new JButton("Pass");
+        JButton  failButton = new JButton("Fail");
+
+        passButton.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent ae) {
+                retDialog.dispose();
+            }
+        });
+        failButton.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent ae) {
+                retDialog.dispose();
+                throw new RuntimeException("Test failed. " + failString);
+            }
+        });
+        retDialog.setTitle("Test");
+        retDialog.setModalityType(Dialog.ModalityType.APPLICATION_MODAL);
+        buttonBox.add(passButton);
+        buttonBox.add(Box.createGlue());
+        buttonBox.add(failButton);
+        retDialog.getContentPane().add(buttonBox, BorderLayout.SOUTH);
+        retDialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+        return retDialog;
+    }
 }