大虾们,帮帮忙,给个java应用程序的例子
来源:百度知道 编辑:UC知道 时间:2024/05/28 07:47:10
先谢谢你了,不过你的程序编译没错,运行时有错,没有窗体出来
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Myframe extends JFrame {
public static void main(String args[]) {
Myframe f = new Myframe("Myframe");
JPanel pan = new JPanel();
f.init();
}
public Myframe(String str) {
super(str);
}
public void init() {
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
setSize(200, 200);
setLayout(new FlowLayout());
final TextField tf1 = new TextField(20);
final TextField tf2 = new TextField(20);
final JLabel la1 = new JLabel("Input");
final JLabel la2 = new JLabel("Output");
tf1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
tf2.setText(tf1.getText());
}
});
add(la1);
ad