eclipse里面怎么创建窗体类呢？

Question

书上看到的这个

这个怎么创建呢，我的eclipse里面只有创建这些

Answer 1

新建普通class，名字为MainFrame

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class MainFrame {
    
    public static void main(String[] args){
        JFrame jframe = new JFrame();
        jframe.setSize(350, 200);
        jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new JPanel();
        jframe.add(panel);
        panel.setLayout(null);
        JLabel userLabel = new JLabel("User:");
        userLabel.setBounds(10,20,80,25);
        panel.add(userLabel);
        JTextField userText = new JTextField(20);
        userText.setBounds(100,20,165,25);
        panel.add(userText);
        jframe.setVisible(true);
    }

}