Java Tutorial/Data Type/Cast

Casting Objects

   <source lang="java">

class Animal {

 public String toString() {
   return "This is an animal ";
 }

} class Dog extends Animal {

 public void sound() {
   System.out.println("Woof Woof");
 }

} class Cat extends Animal {

 public Cat(String aName) {
   name = aName;
 }
 public String toString() {
   return super.toString() + "\nIt"s " + name + " the " + breed;
 }
 public void sound() {
   System.out.println("Miiaooww");
 }
 private String name;
 private String breed;

} public class MainClass {

 public static void main(String[] a) {
   Cat aPet = new Cat("Fang");
   Animal theAnimal = (Animal) aPet; 
 }

}</source>

Convert an integer into binary, hexadecimal, and octal.

   <source lang="java">

class StringConversions {

 public static void main(String args[]) {
   int num = 19648;
   System.out.println(num + " in binary: " + Integer.toBinaryString(num));
   System.out.println(num + " in octal: " + Integer.toOctalString(num));
   System.out.println(num + " in hexadecimal: " + Integer.toHexString(num));
 }

}</source>