Methods in Java

Defining a method in Java

Methods are considered as behavior in a Java Program.

Any changes to variables or any other objects in class are done using methods.

Structure of a method.

access-specifier return-type method-name(parameters)

{

}

Simple example of a method:

public void sayHello()

{

System.out.println("Hello Tom !!");

}

A method can have one or more parameters.

Example consider a method to add two numbers

public void add(int num1,int num2)

{

int sum=num1+num2;

}

A method with return type void means that the method will not return anything, but if a method requires to return back something it will have return type other than void.

And a point to remember here is that it will require to include a return statement at the end of the method.

Or in simple words. IF A METHOD RETURN SOMETHING, LAST STATEMENT IN THE METHOD WILL be the return statement.

Example of a method with return statement

public int square(int num)

{

int i=num*num;

return i;

}

Asterix Solution Provides Core And Advanced Java Training for Beginners. 35 Days Java Training Program is a Job oriented Java Training Program to be completed in 35 training days. This Java Training encompass all the modules required for a candidate to be a Professional Java Developer.

[Source : http://www.javawithz.in/2013/10/methods.html ]