【CSDN常见问题解答】Swing监听组合键

其实监听键盘事件和简单，键盘也就这3个事件keyTyped， keyReleased， keyPressed

下面我们就监听一个CTRL+C组合键好了。

import java.awt.Color;
import java.awt.Frame;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class Gui10 extends Panel {


	public Gui10(String title) {
		Frame frame = new Frame(title);
		
		frame.setSize(200, 400);
		frame.setLocationRelativeTo(null);
		frame.setResizable(true);
		init();
		frame.add(this);
		frame.setVisible(true);
		frame.addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
		});
	}

	private void init() {
		final TextArea textArea = new TextArea(10, 20);
		textArea.setBackground(Color.CYAN);
		textArea.setText("test");
		this.add(textArea);
		textArea.addKeyListener(new KeyListener() {
			
			@Override
			public void keyTyped(KeyEvent e) {
			}
			
			@Override
			public void keyReleased(KeyEvent e) {
				System.out.println("arg0.getModifiers()=" + e.getModifiers());
				System.out.println("arg0.getKeyCode()=" + e.getKeyCode());

				// CTRL+C按下
				if (e.getModifiers() == 2 && e.getKeyCode() == 67) {
					System.out.println("CTRL+C......");
				}
			}
			
			@Override
			public void keyPressed(KeyEvent e) {
			}
		});

	}

	public static void main(String[] args) {
		new Gui10("demo");
	}

}

直接运行，鼠标点进textarea，按CTRL+C看看应该会打印：

arg0.getModifiers()=2
arg0.getKeyCode()=67
CTRL+C......
arg0.getModifiers()=0
arg0.getKeyCode()=17