初级JAVA程序要简单一点

package java3.T6;

import java.awt.Button;
import java.awt.Frame;
import java.awt.Label;
import java.awt.TextField;

public class LoginUI extends Frame {
	
	public LoginUI() {
		init();
	}
	public LoginUI(String title) {
		//设置窗口标题
//		super("用户登录");
		init();
	}
	private void init() {
		//设置窗口标题
		setTitle("用户登录");
		//取消布局
		setLayout(null);
		
		Label lblUser = new Label("用户名称：",Label.RIGHT);
		Label lblPass = new Label("登录密码：",Label.RIGHT);
		//文本框
		TextField txtUser = new TextField(10);
		TextField txtPass = new TextField(10);
		//按钮
		Button btnLogin = new Button("登录");
		Button btnClose = new Button("关闭");
		//设置控件在窗口上的位置(x,y,width,height)
		lblUser.setBounds(100, 110, 100, 20);
		lblPass.setBounds(100, 160, 100, 20);
		txtUser.setBounds(200, 110, 200, 20);
		txtPass.setBounds(200, 160, 200, 20);
		
		btnLogin.setBounds(280, 230, 90, 30);
		btnClose.setBounds(390, 230, 90, 30);
		add(lblUser);
		add(lblPass);
		add(txtUser);
		add(txtPass);
		add(btnLogin);
		add(btnClose);
		//设置窗口大小
		setSize(530,300);
		//显示窗口
		setVisible(true);
		
	}
	public static void main(String[] args) {
		new LoginUI();
	}
}