I copied this from a book and it doesn't work!!! HELP!!!!

Question

import java.awt.FlowLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
public class FrameButton extends JFrame
     private JButton plainJButton;
     private JButton fancyJButton;
     public FrameButton ()
          super( "Testing Buttons" );
          setLayout( new FlowLayout() );
          plainJButton = new JButton( "Plain Button" );
          add( plainJButton );
          Icon smile2 = new ImageIcon( getClass().getResource( "smile2.gif" ));
          Icon smile4 = new ImageIcon( getClass().getResource( "smile4.gif" ));
          fancyJButton = new JButton( "Fancy Button", smile4 );
          fancyJButton.setRolloverIcon( smile4 );
          add(fancyJButton );
          ButtonHandler handler = new ButtonHandler();
          fancyJButton.addActionListener( handler );
          plainJButton.addActionListener( handler );
     private class ButtonHandler implements ActionListener
          public void actionPerformed( ActionEvent event )
               JOptionPane.showMessageDialog( FrameButton.this, String.format(
                    "You pressed: %s", event.getActionCommand() ) );
i get the following error:
cannot find symbol method format(java.lang.String.java.lang.String)

Answer 1

Check the JCreator help for using different JDKs. I have no idea about JC.
And run it from command line and see if 1.5 is installed properly.