java笔记之图形类详解---事件监听器

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

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

public class Demo05 {
    static int count=0;
    public static void main(String[] args) {
        JFrame frame =new JFrame("窗体");
        JPanel panel=new JPanel();
        JLabel nameLable=new JLabel("用户名");
        JTextField nameFiled =new JTextField(10);
        panel.add(nameLable);
        panel.add(nameFiled);
        frame.add(panel);
        
        nameFiled.addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                System.out.println("按下的字符："+e.getKeyChar());
                System.out.println("获取键对应的数值："+ e.getKeyCode());
            }
        });
        Demo01.initJframe(frame, 300, 400);
        
    }
}