Immutable Star

Immutablestar.java

public final class Star {

  /**
   * Final and private attributes
   */
  private final double mass;
  private final String name;
  private final Date dateOfDiscovery;
    
  public Star (double aMass, String aName, Date aDateOfDiscovery) {
     mass = aMass;
     name = aName;
     dateOfDiscovery = new Date(aDateOfDiscovery.getTime());
  }

  public double getMass() {
    return mass;
  }

  public String getName() {
    return name;
  }

  public Date getDateOfDiscovery() {
    return new Date(dateOfDiscovery.getTime());
  }
}