can't implement PropertyChangeListener

I am trying to make a progress bar, and according to the tutorial on Sun's website I need to add a PropertyChangeListener. The problem is when I compile it I get an error

"class" is not abstract and does not override abstract method propertyChange(java.beans.PropertyChangeEvent) in java.beans.PropertyChangeListener

My other issue is that it doesn't recognize Task().

Here is part of the code

import java.awt.*;

import java.awt.event.*;

import java.io.*;

import java.util.*;

import javax.swing.*;

import javax.swing.event.*;

import java.beans.*;

publicclass RunMethodimplements PropertyChangeListener{

publicvoid runMethod(String filename, String file2name)throws IOException{

JProgressBar progressBar =new JProgressBar(0, maximum);

progressBar.setValue(0);

progressBar.setStringPainted(true);

progressBar.setBorderPainted(true);

task =new Task();

task.addPropertyChangeListener(this);

task.execute();

}

}

I haven't bothered to write the PropertyChangeListener method yet....

Thanks

[1839 byte] By [snoboardera] at [2007-11-27 5:58:01]