OverloadDemo.java

// method overloading demo based on an article from http://www.25hoursaday.com/CsharpVsJava.html#same


// parent class implementing a print method
class Parent {
 // printing with a String param
 public void printStuff(String str) {
 System.out.println("In parent class: " + str);
 }
}

// child class inheriting from parent
class Child extends Parent {
 // overloaded parent method
 public void printStuff(String str) {
 System.out.println("In child class: " + str);
 }

 // print method with different signature
 public void printStuff(int n) {
 System.out.println("In child class: " + n);
 }
}

class OverloadDemo {
 public static void main(String[] args) {
 // create some variables
 String str = "Hello there!";
 int i = 100;
 // create a parent and a child object
 Parent p = new Parent();
 Child c = new Child();
 Parent pc = new Child(); // allowed - Child-declared method will be inaccessible

 // printing items
 p.printStuff(str); // allowed - Parent object calls Parent method

 c.printStuff(str); // allowed - Child calls overloaded method
 c.printStuff(i); // allowed - Child calls Child-specific method

 pc.printStuff(str); // allowed - Parent object calls Child method
 //pc.printStuff(i); // not allowed - parent does not have this method
 }
}