java文本框的按键事件_swing学习3–按钮触发事件及获取文本框值

package swing;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

public class Test {

public static void main(String[] args) {

new Text2().setVisible(true);

}

}

class Text2 extends JFrame{

private JButton button;

private JTextField text;

public Text2(){

super(“我是标题”);

this.setSize(250,200);

this.setLayout(null);

this.setLocation(500,500);

button = new JButton(“按钮”);

text = new JTextField(20);

JPanel panel = new JPanel();

panel.add(button);

panel.add(text);

//添加面板

setContentPane(panel);

button.addActionListener(new ActionListener(){

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

new Text3(text).setVisible(true);

}

});

}

}

class Text3 extends JFrame{

public Text3(JTextField text){

super(“我是标题”);

this.setSize(200,200);

this.setLocation(600,300);

this.setLayout(null);

String info = “”+text.getText();

JLabel label = new JLabel(info);

JPanel panel = new JPanel();

panel.add(label);

setContentPane(panel);

}

}