e1310.java

java小程序

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class E1310 extends JFrame implements ActionListener
{
private Container c;
private JLabel label=new JLabel("请输入文字");
private JTextField textField;
private JTextArea textArea;
public E1310()
{
super("E1310.java:JTextField及JTextArea的测试");
c=getContentPane();
textField=new JTextField("",30);
textArea=new JTextArea("",5,25);
c.setLayout(new FlowLayout());
c.add(label);
c.add(textField);
c.add(textArea);
textField.addActionListener(this);
setSize(400,200);
setVisible(true);
}

public void actionPerformed(ActionEvent e)
{
String str=textField.getText();
textArea.append(str+"\n");
textField.setText("");
}
public static void main(String args[])
{
E1310 app=new E1310();
app.addWindowListener(new MyWindowListener());
}
}