Question

继承了JFrame为什么还出错

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.Box;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class MyThread extends JFrame{

public static void main(String[] args){
Container contentPane = getContentPane();
Icon icon = new ImageIcon("icons\\direct.jpg");
JLabel label = new JLabel(icon,JLabel.CENTER);
contentPane.add(label);
show();
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
}
}

Answer 1

main是静态方法，静态方法里面不能写，你写个非静态的方法，然后到里面就可以写了，然后你要new个你这个类的对象，然后用这个对象来调用