Define method overloading and its purpose. in programs in java code example

Example 1: What's method overloading

Overloading mean same method name and different parameter, 
it can happen in same class. it's a feature that 
allows us to have more than one method with same name.

Example: sort method of Arrays class
Arrays.sort(int[] arr)
Arrays.sort(String[] arr)
....
Method overloading improves the reusability and readability. 
and it's easy to remember 
(one method name instead of remembering multiple method names)

Example 2: program for method overloading in java

class Calculate
{
  void sum (int a, int b)
  {
    System.out.println("sum is"+(a+b)) ;
  }
  void sum (float a, float b)
  {
    System.out.println("sum is"+(a+b));
  }
  Public static void main (String[] args)
  {
    Calculate  cal = new Calculate();
    cal.sum (8,5);      //sum(int a, int b) is method is called.
    cal.sum (4.6f, 3.8f); //sum(float a, float b) is called.
  }
}