简单的用户登陆界面

//check.java
package check;
import javax.swing.*;
public class check extends JPanel{
	JLabel namelabel1,namelabel2;
	JTextField name;
	JPasswordField password;
	JButton okButton,cancelButton;

	public check(){
		namelabel1 = new JLabel("用户名:");
		namelabel2 = new JLabel("密码:");
		name = new JTextField(20);
		password = new JPasswordField(20);
		okButton = new JButton("ok");
		cancelButton = new JButton("cancel");
		add(namelabel1);
		add(name);
		add(namelabel2);
		add(password);
		add(okButton);
		add(cancelButton);
	}
}

//Jframe.java
package check;
import javax.swing.*;
import java.awt.*;
public class Jframe extends JFrame{
	check panel;
	private static final int D_width=320;
	private static final int D_height=120;
	public Jframe(){
		setSize(D_width,D_height);
		setTitle("登陆");
		panel = new check();
		getContentPane().add(panel);
		setVisible(true);
		setResizable(false);
	}
}

//main.java
package check;

import javax.swing.*;

public class main extends JFrame{
	public static void main(String[] args){
		Jframe frame= new Jframe();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}