swing combobox DRAFT

import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JComboBox;

public class Combobox extends JFrame implements ActionListener
{
    private static final long serialVersionUID = 1L;

    JPanel pane = new JPanel();
  JButton pressme = new JButton("Press Me");
  JLabel answer = new JLabel("");
  String[] animals = { "Bird", "Cat", "Dog", "Rabbit", "Pig" };
  JComboBox animalscombobox = new JComboBox( animals );

  Combobox()
  {
    super( "Button Press" );
    setBounds( 100 , 100 , 400 , 300 );
    setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
    Container myContainer = this.getContentPane();  // inherit main frame

    myContainer.add( pane );
    pressme.setMnemonic( 'P' );
    pane.add( pressme );
    pressme.addActionListener(this);
    pressme.requestFocus();

    answer.setText( "Please press the button" );
    pane.add( answer );

    pane.add( animalscombobox );
    animalscombobox.setSelectedIndex( 4 );
    animalscombobox.addActionListener( this );

    setVisible(true);
  }


  public void actionPerformed( ActionEvent event )
  {
    Object source = event.getSource();
    if( source == pressme )
    {
      answer.setText( "Button pressed!" );
      JOptionPane.showMessageDialog( null , "Popup from button." , "Message Dialog" , JOptionPane.PLAIN_MESSAGE );
      setVisible(true);
    }
    if( source == animalscombobox )
    {
      answer.setText( "animals!" );
      JComboBox cb = (JComboBox) event.getSource();
      String name = (String) cb.getSelectedItem();
      setVisible(true);
    }

  }


  public static void main( String args[] )
  { new Combobox();
  }

}