Java 部分 窗口 入门基础

import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Frame;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;

public class Gui {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    JFrame JFrame = new JFrame("Gui界面");
    JFrame.setLocation(500,500);
    JFrame.setSize(300, 200);
    //创建一个文本框
    TextField textfiled = new TextField(30);
    
    //把文本框存放在窗口JFrame的北部
    JFrame.add(textfiled,BorderLayout.NORTH);
    //创建一个按钮 Button
    Button btn = new Button("点我试试");
    JFrame.add(btn);
    //给按钮一个点击事件 使用匿名内部类 
    btn.addActionListener(new ActionListener(){
        public void actionPerformed(ActionEvent e) {
            String info = textfiled.getText();
            System.out.println("嘿嘿嘿"+ info);
            JFrame.setTitle(info);
                
        }
    } );
    JFrame.pack();//自己调节窗口大小
    JFrame.setVisible(true);//显示界面
    //关闭窗口
    JFrame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
        
    });
}

}