Java Methods

Methods are used for manipulating the data of class. Methods can be declared inside the class.

Method defines the interface for class. We cannot write the output statement System.out.println();outside the method in java.

Method Contains following four important parts

1. Method Name
   The method name is an identifier which is needed to call it for execution.
2. Type or Return Type
   It specifies the value to be returned by method after executing its body. The return type must be matched while returning the specific value.
3. Parameter list
   It specifies the extra values to be passed while calling the method.The parameters must be matched while calling the method if there is a method overloading.
4. Body of method
   It contains actual code to be executed by method after its call. The body method is enclosed within curly brackets from { to }

Syntax

type method_name(parameter1,parameter2,.... parameterN)
{
	body of the method
	.....
	.....
}

Example

Program to find greatest numbers from two numbers

class FindGreater
{
    int greater;
    void find(int n1,int n2)
    {
         greater = (n1 > n2 ? n1 : n2);
    }
    int printNumber()
    {
        return greater;
    }
    public static void main(String args[])
    {
        int first,second;
        FindGreater fg = new FindGreater();
        Scanner sc = new Scanner(System.in);

        System.out.println("Enter first number : ");
        first = sc.nextInt();
        System.out.println("Enter second number : ");
        second = sc.nextInt();
        n1.find(first,second);
        System.out.println("Greater number is : "+n1.printNumber());
    }
}

Output