java 关闭窗口时遇到问题 请大神赐教

Question

java

Answer 1

package test;import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;import javax.swing.JFrame;public class TestFrame extends JFrame {    public TestFrame() {
        this.setSize(400,300);
        //this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//第一个方法
        this.addWindowListener(new WindowAdapter()
        {
            @Override
            public void windowClosing(WindowEvent e) {
                // TODO Auto-generated method stub
                super.windowClosing(e);
                System.exit(0);
            }
        });
    }
    public static void main(String[] args) {
        TestFrame frame = new TestFrame();
        frame.setVisible(true);
    }
}两个方法都可以啊