about select() in JTextArea?

i wrote the following codes,but the select() didnt work, :( why?

could you help me?please....

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JTextArea;

public class TrySelect {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

JFrame frame = new JFrame("TrySelect");

Container c = frame.getContentPane();

final JTextArea t= new JTextArea();

c.add(t);

JButton b = new JButton("Select");

c.add(b,BorderLayout.SOUTH);

b.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

t.select(5, 10);

}

});

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setBounds(120, 200,400,500);

frame.setVisible(true);

}

}

thanks a lot!

[1053 byte] By [rmn190a] at [2007-11-27 1:34:53]