96                 }
  97             }
  98         }
  99 
 100         return retval;
 101     }
 102 
 103     private static boolean areScreenDevicesIndependent(GraphicsDevice[] gds) {
 104         for (int i = 0; i < gds.length; i++) {
 105             Rectangle bounds = gds[i].getDefaultConfiguration().getBounds();
 106             if (bounds.x != 0 || bounds.y != 0) {
 107                 return false;
 108             }
 109         }
 110         return true;
 111     }
 112 
 113     /**
 114      * Returns the number of buttons on the mouse.
 115      * On systems without a mouse, returns <code>-1</code>.



 116      *
 117      * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true
 118      * @return number of buttons on the mouse

 119      * @since 1.5
 120      */
 121     public static int getNumberOfButtons() throws HeadlessException {
 122         if (GraphicsEnvironment.isHeadless()) {
 123             throw new HeadlessException();
 124         }
 125         Object prop = Toolkit.getDefaultToolkit().
 126                               getDesktopProperty("awt.mouse.numButtons");
 127         if (prop instanceof Integer) {
 128             return ((Integer)prop).intValue();
 129         }
 130 
 131         // This should never happen.
 132         assert false : "awt.mouse.numButtons is not an integer property";
 133         return 0;
 134     }
 135 
 136 }

  96                 }
  97             }
  98         }
  99 
 100         return retval;
 101     }
 102 
 103     private static boolean areScreenDevicesIndependent(GraphicsDevice[] gds) {
 104         for (int i = 0; i < gds.length; i++) {
 105             Rectangle bounds = gds[i].getDefaultConfiguration().getBounds();
 106             if (bounds.x != 0 || bounds.y != 0) {
 107                 return false;
 108             }
 109         }
 110         return true;
 111     }
 112 
 113     /**
 114      * Returns the number of buttons on the mouse.
 115      * On systems without a mouse, returns <code>-1</code>.
 116      * The number of buttons is obtained from the AWT Toolkit
 117      * by requesting the {@code "awt.mouse.numButtons"} desktop property
 118      * which is set by the underlying native platform.
 119      *
 120      * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true
 121      * @return number of buttons on the mouse
 122      * @see Toolkit#getDesktopProperty
 123      * @since 1.5
 124      */
 125     public static int getNumberOfButtons() throws HeadlessException {
 126         if (GraphicsEnvironment.isHeadless()) {
 127             throw new HeadlessException();
 128         }
 129         Object prop = Toolkit.getDefaultToolkit().
 130                               getDesktopProperty("awt.mouse.numButtons");
 131         if (prop instanceof Integer) {
 132             return ((Integer)prop).intValue();
 133         }
 134 
 135         // This should never happen.
 136         assert false : "awt.mouse.numButtons is not an integer property";
 137         return 0;
 138     }
 139 
 140 }