jmacinator

This library is a Java/Mac OS X integrator. It allows your Java application to more fully interact with Mac OS X like a native application while also still being cross-platform. It requires Java 7 or higher and Mac OS X Lion (10.7) or higher. Mac OS X 10.7 is the lowest version of Mac OS that Java 7 supports.

An example application that adds a quit handler:

import javax.swing.*;
import lib.apple.eawt.*;
import lib.apple.eawt.AppEvent.*;

public class MacExample {
  private static final boolean IS_MAC = System.getProperty("os.name").contains("Mac");
  
  public static void main(String[] args) {
    // Swing components should be created on the
    // Event Dispatch Thread
    SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run() {
        createAndShowGUI();
      }
    });
  }
  
  private static void createAndShowGUI() {
    // Create the window and center it on the screen
    final JFrame frame = new JFrame("Test Window");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setResizable(true);
    frame.setSize(300, 300);
    frame.setLocationRelativeTo(null);
    
    // Need to block this off so that it will not be
    // used on non-Mac OS systems.
    if (IS_MAC) {
      Application.setQuitHandler(new QuitHandler() {
        @Override
        public void handleQuitRequestWith(QuitEvent e, QuitResponse response) {
          frame.setVisible(false);
          frame.dispose();
          response.performQuit();
        }
      });
      Application.setQuitStrategy(QuitStrategy.SYSTEM_EXIT_0);
    }
    
    frame.setVisible(true);
  }
}

Other features also include setting the dock image so that it is not the generic Java icon and also getting many other system events. Special thanks to simplericity for providing the inspiration for this project.