Menggunakan Operator instanceOf Dalam Hierarki Turunan Di Java

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// Nama file : InstanceOf.java
// Mendemonstrasikan penggunaan operator instanceof
 
// deklarasi kelas
public class InstanceOf {
 
   // Metoda main
   public static void main(String[ ] args) {
 
      System.out.println();
      System.out.println("new Kerucut() instanceof Kerucut : " +
         (new Kerucut() instanceof Kerucut));
      System.out.println("new Kerucut() instanceof Lingkaran : " +
         (new Kerucut() instanceof Lingkaran));
      System.out.println("new Kerucut() instanceof BangunDatar : " +
         (new Kerucut() instanceof BangunDatar));
      System.out.println("new Kerucut() instanceof Object : " +
         (new Kerucut() instanceof Object));
   }
}
 
class Kerucut extends Lingkaran {
   // Data dan metoda
}
 
class Lingkaran extends BangunDatar {
   // Data dan metoda
}
 
class BangunDatar extends Object {
   // Data dan metoda
}

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// Nama file : InstanceOf2.java
// Mendemonstrasikan penggunaan operator instanceof
 
// deklarasi kelas
public class InstanceOf2 {
 
   // Metoda main
   public static void main(String[ ] args) {
 
      System.out.println();
      System.out.println("new BangunDatar() instanceof Kerucut : " +
         (new BangunDatar() instanceof Kerucut));
      System.out.println("new BangunDatar() instanceof Lingkaran : " +
         (new BangunDatar() instanceof Lingkaran));
      System.out.println("new BangunDatar() instanceof BangunDatar : " +
         (new BangunDatar() instanceof BangunDatar));
      System.out.println("new BangunDatar() instanceof Object : " +
         (new BangunDatar() instanceof Object));
   }
}
 
class Kerucut extends Lingkaran {
   // Data dan metoda
}
 
class Lingkaran extends BangunDatar {
   // Data dan metoda
}
 
class BangunDatar extends Object {
   // Data dan metoda
}