CoVariant.java

Download Covariant.java source file

/** Demo of covariant return types.
 * 
 * @author Wayne Pollock, Tampa Florida USA
 */
class Covariant implements Cloneable
{
   public Covariant clone() throws CloneNotSupportedException
   {
      return (Covariant) super.clone();
   }

   public static void main ( String [] args )
                           throws CloneNotSupportedException
   {
      Covariant c1 = new Covariant();
      Covariant c2 = c1.clone();  // No cast needed!
   }
}