diff -r 22fbbcbcab1d -r ffcc849b9351 jdk/src/share/classes/javax/swing/plaf/synth/SynthComboBoxUI.java
--- a/jdk/src/share/classes/javax/swing/plaf/synth/SynthComboBoxUI.java	Tue Jan 26 15:42:06 2010 +0900
+++ b/jdk/src/share/classes/javax/swing/plaf/synth/SynthComboBoxUI.java	Thu Jan 28 17:06:54 2010 +0300
@@ -305,7 +305,16 @@
     // begin ComponentUI Implementation
 
     /**
-     * @inheritDoc
+     * Notifies this UI delegate to repaint the specified component.
+     * This method paints the component background, then calls
+     * the {@link #paint(SynthContext,Graphics)} method.
+     *
+     * <p>In general, this method does not need to be overridden by subclasses.
+     * All Look and Feel rendering code should reside in the {@code paint} method.
+     *
+     * @param g the {@code Graphics} object used for painting
+     * @param c the component being painted
+     * @see #paint(SynthContext,Graphics)
      */
     @Override
     public void update(Graphics g, JComponent c) {
@@ -319,7 +328,13 @@
     }
 
     /**
-     * @inheritDoc
+     * Paints the specified component according to the Look and Feel.
+     * <p>This method is not used by Synth Look and Feel.
+     * Painting is handled by the {@link #paint(SynthContext,Graphics)} method.
+     *
+     * @param g the {@code Graphics} object used for painting
+     * @param c the component being painted
+     * @see #paint(SynthContext,Graphics)
      */
     @Override
     public void paint(Graphics g, JComponent c) {
@@ -333,7 +348,8 @@
      * Paints the specified component.
      *
      * @param context context for the component being painted
-     * @param g {@code Graphics} object used for painting
+     * @param g the {@code Graphics} object used for painting
+     * @see #update(Graphics,JComponent)
      */
     protected void paint(SynthContext context, Graphics g) {
         hasFocus = comboBox.hasFocus();