Method declaration in Java

Method declaration in Java

Why method is necessary
It is necessary for operation on data in the
present in class

format for the method
type methodename (parameter)
{
Body of method
}

Example:


    class A
{
    int c,x,y;
   
    void cal(int x,int y)    //IT IS YOUR METHOD
    {
       
        c=x+y;
        System.out.println(+c);
       
    }   
}




class Method //here you can take any class name
 {
    public static void main(String[] args)
    {
        A obj=new A();  //CREATING OBJECT FOR CLASS A
       
        obj.cal(12,2);  //ACCESSING METHOD
    }
}
Here in above program we make to classes method
Is our main class for our main method
And class A is our second class
In which we take method cal
There is necessary to create the object of the class A
In our main class( here class method)
That’s why we create object of the class A in main class
        A obj=new A(); 
A is our class name
Obj is user defined you can take
Any name or word here

In class A we declare method
  void cal(int x,int y)
for accessing this method from main class
obj.cal(your parameter )
is require to declare in main class