bjpeterdelacruz

public class Id implements Serializable {

  private final int hashCode;

  public Id() {
    hashCode = super.hashCode();
  }

  @Override
  public int hashCode() {

bjpeterdelacruz

String msg = "Are you sure you want to cancel the selected bookings?";
String[] options = new String[] { "Yes", "No" };

int option = JOptionPane.showOptionDialog(null, msg, "Confirm Unbooking", JOptionPane.OK_CANCEL_OPTION,
  JOptionPane.INFORMATION_MESSAGE, null, options, options[1]);
if (option == 1) {
  return;
}

bjpeterdelacruz

/**
* Tests the locking mechanism in this class.
* 
* @param args None.
* @throws Exception If there are problems.
*/
public static void main(String... args) throws Exception {

  ExecutorService threadPool = Executors.newFixedThreadPool(5);

bjpeterdelacruz

while (locksMap.get(recNo) != null) {
  condition.await();
}

bjpeterdelacruz

Properties properties = new Properties();

FileInputStream istream = new FileInputStream(Constants.PROPERTIES_FILE);
properties.load(istream);
String value = properties.getProperty("db.location");
istream.close();

bjpeterdelacruz

Properties properties = new Properties();
properties.setProperty("db.location", "/path/to/db-2x1.db");

FileOutputStream ostream = new FileOutputStream(Constants.PROPERTIES_FILE);
String msg = " This file stores properties for both the client and server.";
properties.store(ostream, msg);
ostream.close();

bjpeterdelacruz

checkbox.addItemListener(new ItemListener() {

  @Override
  public void itemStateChanged(ItemEvent event) {
    if (JOptionPane.YES_OPTION != JOptionPane.showConfirmDialog(parentComponent, "...", "...", JOptionPane.YES_NO_OPTION) {
      return;
    }
    // Programmatically click on the Apply Changes button.
  }

bjpeterdelacruz

checkbox.addActionListener(new ActionListener() {

  @Override
  public void actionPerformed(ActionEvent event) {
    if (JOptionPane.YES_OPTION != JOptionPane.showConfirmDialog(parentComponent, "...", "...", JOptionPane.YES_NO_OPTION) {
      return;
    }
    // Programmatically click on the Apply Changes button.
  }

bjpeterdelacruz

/**
* @author BJ Peter DeLaCruz
*/
public JTree createTree() {
  DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer();
  renderer.setClosedIcon(null);
  renderer.setLeafIcon(null);
  renderer.setOpenIcon(null);
  JTree tree = new JTree();
  tree.setCellRenderer(renderer);

bjpeterdelacruz

// This method will concatenate a list of Number objects.
public <T extends Number> List<T> concat(List<T> list1, List<T> list2) {

  List<T> list = new ArrayList<T>();
  list.addAll(list1);
  list.addAll(list2);
  return list;

}