--- a/jdk/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicScrollBarUI.java	Thu May 19 16:34:36 2016 +0530
+++ b/jdk/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicScrollBarUI.java	Thu May 19 16:45:58 2016 +0530
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2016, 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
@@ -1212,7 +1212,7 @@
             scrollbar.repaint(r.x, r.y, r.width, r.height);
 
             trackHighlight = NO_HIGHLIGHT;
-            isDragging = false;
+            setDragging(false);
             offset = 0;
             scrollTimer.stop();
             useCachedValue = true;
@@ -1256,7 +1256,7 @@
                     offset = currentMouseX - getThumbBounds().x;
                     break;
                 }
-                isDragging = true;
+                setDragging(true);
                 return;
             }
             else if (getSupportsAbsolutePositioning() &&
@@ -1269,11 +1269,11 @@
                     offset = getThumbBounds().width / 2;
                     break;
                 }
-                isDragging = true;
+                setDragging(true);
                 setValueFrom(e);
                 return;
             }
-            isDragging = false;
+            setDragging(false);
 
             Dimension sbSize = scrollbar.getSize();
             direction = +1;
@@ -1636,6 +1636,12 @@
         }
     }
 
+    private void setDragging(boolean dragging) {
+        this.isDragging = dragging;
+        scrollbar.repaint(getThumbBounds());
+    }
+
+
     /** Property change handler */
     public class PropertyChangeHandler implements PropertyChangeListener
     {

--- a/jdk/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthScrollBarUI.java	Thu May 19 16:34:36 2016 +0530
+++ b/jdk/src/java.desktop/share/classes/javax/swing/plaf/synth/SynthScrollBarUI.java	Thu May 19 16:45:58 2016 +0530
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2016, 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
@@ -201,9 +201,12 @@
     }
 
     private int getComponentState(JComponent c, Region region) {
-        if (region == Region.SCROLL_BAR_THUMB && isThumbRollover() &&
-                                                 c.isEnabled()) {
-            return MOUSE_OVER;
+        if (region == Region.SCROLL_BAR_THUMB && c.isEnabled()) {
+            if (isDragging) {
+                return PRESSED;
+            } else if (isThumbRollover()) {
+                return MOUSE_OVER;
+            }
         }
         return SynthLookAndFeel.getComponentState(c);
     }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/swing/plaf/synth/SynthScrollbarThumbPainter/SynthScrollbarThumbPainterTest.java	Thu May 19 16:45:58 2016 +0530
@@ -0,0 +1,203 @@
+/*
+ * Copyright (c) 2016, 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 7172750
+ * @summary Test to check Synth ScrollBar:ScrollBarThumb[].backgroundPainter is invoked
+ * @run main SynthScrollbarThumbPainterTest
+ */
+
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.Robot;
+import java.awt.event.InputEvent;
+import java.awt.image.BufferedImage;
+import javax.swing.JComponent;
+import javax.swing.JEditorPane;
+import javax.swing.JFrame;
+import javax.swing.JScrollPane;
+import javax.swing.Painter;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+
+public class SynthScrollbarThumbPainterTest {
+
+    private static Robot testRobot;
+    private static Point pos = new Point();
+    private static MyFrame testFrame;
+
+    public static void main(String[] args) throws Exception {
+        // Create Robot
+        testRobot = new Robot();
+
+        // Create test UI
+        String lookAndFeelString = "javax.swing.plaf.nimbus.NimbusLookAndFeel";
+        SwingUtilities.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                try {
+                    constructTestUI(lookAndFeelString);
+                } catch (Exception ex) {
+                    throw new RuntimeException("Exception creating test UI");
+                }
+            }
+        });
+
+        testRobot.waitForIdle();
+        testRobot.delay(200);
+
+        // Run test method
+        testScrollBarThumbPainter();
+
+        // Dispose test UI
+        disposeTestUI();
+    }
+
+    private static void disposeTestUI() throws Exception {
+        SwingUtilities.invokeAndWait(() -> {
+            testFrame.dispose();
+        });
+    }
+
+
+    private static void constructTestUI(String lookAndFeelString) throws Exception {
+        // Set look and feel
+        UIManager.setLookAndFeel(lookAndFeelString);
+
+        // Set ScrollBarThumb background painters
+        UIManager.getLookAndFeelDefaults().put("ScrollBar:ScrollBarThumb[Enabled].backgroundPainter", new FillPainter(Color.RED));
+        UIManager.getLookAndFeelDefaults().put("ScrollBar:ScrollBarThumb[MouseOver].backgroundPainter", new FillPainter(Color.GREEN));
+        UIManager.getLookAndFeelDefaults().put("ScrollBar:ScrollBarThumb[Pressed].backgroundPainter", new FillPainter(Color.BLUE));
+
+        // Create UI
+        testFrame = new MyFrame();
+    }
+
+   private static void testScrollBarThumbPainter() throws Exception {
+        Point p = testFrame.getLocation();
+        pos.setLocation(p.x + 185, p.y + 80); // offset where scrollbar exists
+
+        testRobot.delay(200);
+
+        // Get the scrollbar color
+        Color ScrollbarColor = testFrame.getPixelColor(pos.x - p.x, pos.y - p.y);
+
+        // Assert ScrollbarThumb 'Enable' state color
+        if (!ScrollbarColor.equals(Color.RED)) {
+            disposeTestUI();
+            throw new RuntimeException("ScrollbarThumb 'Enable' state color does not match expected color");
+        }
+
+        // Move the mouse over scrollbar
+        testRobot.mouseMove(pos.x, pos.y);
+        testRobot.delay(200);
+
+        ScrollbarColor = testFrame.getPixelColor(pos.x - p.x, pos.y - p.y);
+
+        //Assert ScrollbarThumb 'MouseOver' state color
+        if (!ScrollbarColor.equals(Color.GREEN)) {
+            disposeTestUI();
+            throw new RuntimeException("ScrollbarThumb 'MouseOver' state color does not match expected color");
+        }
+
+        // Mouse Press on scrollbar
+        testRobot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
+        testRobot.delay(200);
+
+        ScrollbarColor = testFrame.getPixelColor(pos.x - p.x, pos.y - p.y);
+
+        testRobot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
+        testRobot.delay(200);
+
+        //Assert ScrollbarThumb 'Pressed' state color
+        if (!ScrollbarColor.equals(Color.BLUE)) {
+            disposeTestUI();
+            throw new RuntimeException("ScrollbarThumb 'Pressed' state color does not match expected color");
+        }
+    }
+
+}
+
+
+class FillPainter implements Painter<JComponent> {
+
+    private final Color color;
+
+    FillPainter(Color c) {
+        color = c;
+    }
+
+    @Override
+    public void paint(Graphics2D g, JComponent object, int width, int height) {
+        g.setColor(color);
+        g.fillRect(0, 0, width - 1, height - 1);
+    }
+}
+
+class MyFrame extends JFrame {
+
+    private BufferedImage bi;
+    private final String content = "A\nB\nC\nD\nE\nF\nG\nH\nI\nJ\nK\nL\nM\nN\nO";
+
+    public MyFrame() {
+        JEditorPane editpane = new JEditorPane();
+        editpane.setEditable(false);
+        editpane.setText(content);
+        editpane.setCaretPosition(0);
+
+        JScrollPane scrollpane = new JScrollPane(editpane);
+
+        add(scrollpane);
+
+        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
+
+        setSize(new Dimension(200, 200));
+        bi = new BufferedImage(200, 200, BufferedImage.TYPE_INT_ARGB);
+        setResizable(false);
+        setVisible(true);
+    }
+
+
+    public Color getPixelColor(int x, int y) {
+
+        paintFrameToBufferedImage(this);
+
+        int pixel = bi.getRGB(x, y);
+
+        int alpha = (pixel >> 24) & 0xff;
+        int red = (pixel >> 16) & 0xff;
+        int green = (pixel >> 8) & 0xff;
+        int blue = (pixel) & 0xff;
+
+        Color pixelColor = new Color(red, green, blue, alpha);
+        return pixelColor;
+    }
+
+    private void paintFrameToBufferedImage(Component component) {
+       component.paint(bi.getGraphics());
+    }
+} //MyFrame
+