public class CenterFrameTest {
public static void main(String[] args) {
CenterFrame frame = new CenterFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.show();
}
public CenterFrameTest{
setSize(300,200);
}}
public static void main(String[] args) {
CenterFrame frame = new CenterFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.show();
}
public CenterFrameTest{
setSize(300,200);
}}
置系统默认的关闭为退出程序。
你也可以加入事件监听
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;public class CenterFrameTest {
public static void main(String[] args) {
CenterFrame frame = new CenterFrame();
frame.show();
}
}class CenterFrame extends JFrame {
public CenterFrame() {
setSize(300,200);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
System.exit(0);
}
});
}
}