src/java.desktop/share/classes/javax/swing/plaf/basic/BasicLabelUI.java

*** 127,137 ****
       */
      protected void paintEnabledText(JLabel l, Graphics g, String s, int textX, int textY)
      {
          int mnemIndex = l.getDisplayedMnemonicIndex();
          g.setColor(l.getForeground());
!         SwingUtilities2.drawStringUnderlineCharAt(l, g, s, mnemIndex,
                                                       textX, textY);
      }
  
  
      /**
--- 127,137 ----
       */
      protected void paintEnabledText(JLabel l, Graphics g, String s, int textX, int textY)
      {
          int mnemIndex = l.getDisplayedMnemonicIndex();
          g.setColor(l.getForeground());
!         getTextUIDrawing().drawStringUnderlineCharAt(l, g, s, mnemIndex,
                                                       textX, textY);
      }
  
  
      /**
*** 149,162 ****
      protected void paintDisabledText(JLabel l, Graphics g, String s, int textX, int textY)
      {
          int accChar = l.getDisplayedMnemonicIndex();
          Color background = l.getBackground();
          g.setColor(background.brighter());
!         SwingUtilities2.drawStringUnderlineCharAt(l, g, s, accChar,
                                                     textX + 1, textY + 1);
          g.setColor(background.darker());
!         SwingUtilities2.drawStringUnderlineCharAt(l, g, s, accChar,
                                                     textX, textY);
      }
  
      /**
       * Paints the label text with the foreground color, if the label is opaque
--- 149,162 ----
      protected void paintDisabledText(JLabel l, Graphics g, String s, int textX, int textY)
      {
          int accChar = l.getDisplayedMnemonicIndex();
          Color background = l.getBackground();
          g.setColor(background.brighter());
!         getTextUIDrawing().drawStringUnderlineCharAt(l, g, s, accChar,
                                                     textX + 1, textY + 1);
          g.setColor(background.darker());
!         getTextUIDrawing().drawStringUnderlineCharAt(l, g, s, accChar,
                                                     textX, textY);
      }
  
      /**
       * Paints the label text with the foreground color, if the label is opaque
*** 337,346 ****
--- 337,347 ----
          return Component.BaselineResizeBehavior.OTHER;
      }
  
  
      public void installUI(JComponent c) {
+         super.installUI(c);
          installDefaults((JLabel)c);
          installComponents((JLabel)c);
          installListeners((JLabel)c);
          installKeyboardActions((JLabel)c);
      }