I can not get sound in the yahoo chat room

Question

for some strange reason I cannot get sound in the chat rooms when people are playing music

Answer 1

when you start your application you create an instance of Frame2 whose reference is stored in variable frame2.
Now in your class Grow you create another instance of Frame2 whose reference is stored in variable f and set its label to "Class test". This instance is not the same as the instance which you are running.
You need to make class grow as an inner class of Frame2 and then set then set the label of the instance which is running.
Here's the working code -
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Frame2 extends JFrame {
    public Frame2() {
        super("test");
        this.setBounds(100,100,200,100);
        JPanel jp=new JPanel();
        jp.setBackground(Color.cyan);
        jb=new JButton("test");
        jl=new JLabel("this is a test");
        jp.add(jl);
        jp.add(jb);
        Container contentpane=this.getContentPane();
        contentpane.add(jp,"South");
        jb.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                g=new Grow();
                g.start();
    public void setString(String str){
        jl.setText(str);
    public static void main(String[] args) {
        Frame2 frame2 = new Frame2();
        frame2.show();
    private JButton jb;
    private final JLabel jl;
    private Grow g;
    class Grow extends Thread{
        public void run(){
            setString("Class Test");
}