selecttext.java

一个关于java的文本框与文本域的程序

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

public class SelectText extends Applet implements ActionListener  
{
	Label l=new Label("TextArea And TextField");
	TextField tf=new TextField(40);
	TextArea ta=new TextArea("Please select the string which you want in the TextArea\nand then please click the button \"copy\"\nthen the select string will be copied to the TextField",3,50);
	Button bt=new Button("copy");
	public void init()
	{
		add(l);
		add(ta);
        add(bt);
		add(tf);
		bt.addActionListener(this);
	}
	public void actionPerformed(ActionEvent evt)
	{
		String s;
		s=ta.getSelectedText();
		if(evt.getActionCommand().equals("copy"))
			tf.setText(s);
	}
}