Example Depot

// Create the frame Frame frame = new Frame(); // Create a listener WindowStateListener listener = new WindowAdapter() { public void windowStateChanged(WindowEvent evt) { int oldState = evt.getOldState(); int newState = evt.getNewState(); if ((oldState & Frame.ICONIFIED) == 0 && (newState & Frame.ICONIFIED) != 0) { // Frame was iconized } else if ((oldState & Frame.ICONIFIED) != 0 && (newState & Frame.ICONIFIED) == 0) { // Frame was deiconized } if ((oldState & Frame.MAXIMIZED_BOTH) == 0 && (newState & Frame.MAXIMIZED_BOTH) != 0) { // Frame was maximized } else if ((oldState & Frame.MAXIMIZED_BOTH) != 0 && (newState & Frame.MAXIMIZED_BOTH) == 0) { // Frame was minimized } } }; // Register the listener with the frame frame.addWindowStateListener(listener);