SWING(Philosophers)

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class PhilosophersJList extends JFrame {

private DefaultListModel philosophers;
private JList list;

public PhilosophersJList()
{
super( "Favorite Philosophers" );

// create a DefaultListModel to store philosophers
philosophers = new DefaultListModel();
philosophers.addElement( "Socrates" );
philosophers.addElement( "Plato" );
philosophers.addElement( "Aristotle" );
philosophers.addElement( "St. Thomas Aquinas" );
philosophers.addElement( "Soren Kierkegaard" );
philosophers.addElement( "Immanuel Kant" );
philosophers.addElement( "Friedrich Nietzsche" );
philosophers.addElement( "Hannah Arendt" );

// create a JList for philosophers DefaultListModel
list = new JList( philosophers );

// allow user to select only one philosopher at a time
list.setSelectionMode(
ListSelectionModel.SINGLE_SELECTION );

// create JButton for adding philosophers
JButton addButton = new JButton( "Add Philosopher" );
addButton.addActionListener(
new ActionListener() {

public void actionPerformed( ActionEvent event )
{
// prompt user for new philosopher~s name
String name = JOptionPane.showInputDialog(
PhilosophersJList.this, "Enter Name" );

// add new philosopher to model
philosophers.addElement( name );
}
}
);

// create JButton for removing selected philosopher
JButton removeButton =
new JButton( "Remove Selected Philosopher" );

removeButton.addActionListener(
new ActionListener() {

public void actionPerformed( ActionEvent event )
{
// remove selected philosopher from model
philosophers.removeElement(
list.getSelectedValue() );
}
}
);

// lay out GUI components
JPanel inputPanel = new JPanel();
inputPanel.add( addButton );
inputPanel.add( removeButton );

Container container = getContentPane();
container.add( list, BorderLayout.CENTER );
container.add( inputPanel, BorderLayout.NORTH );

setDefaultCloseOperation( EXIT_ON_CLOSE );
setSize( 400, 300 );
setVisible( true );

} // end PhilosophersJList constructor

// execute application
public static void main( String args[] )
{
new PhilosophersJList();
}
}