Java Method & method overloading

What is methods in java ?
-->A Method provides information about, and access to, a single method on a class or interface.
-->The reflected method may be a class method or an instance method (including an abstract method).
-->method is the block of code
->You can pass data, known as parameters, into a method.
-->Methods are used to perform certain actions, and they are also known as functions.
-->Why use methods? To reuse code: define the code once, and use it many times.

//class 
public class Calculater{
//main method
public static void main (String[]  args){
         // create in Object
        Calculater casio = new Calculater();
       // calling method 
        casio.add();
}
// method
public  void  add (){
      int i  = 10;
      int j = 5;
   int    result = i +j;
      System.out.println(result);

}
}

What is method overloading?
Method overloading:
--> Method overloading in Java allows a class to have multiple methods with the same name but different argument lists.
--> It is a form of compile-time polymorphism, because the compiler determines which overloaded method to call based on the arguments passed.

ublic class Calculater{

public static void main (String[]  args){
        Calculater casio = new Calculater();
//      casio.add();
        casio.add(10,20);
        casio.add(100,20);
        casio.add(10,20,50);
}
//method overloading 
//same method name different argument 

public  void  add (int i , int j, int k ){
   int    result = i +j+k;
     System.out.println(result);
}
public  void  add (int i , int j){
   int    result = i +j;
     System.out.println(result);
}
}