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import java.util.Scanner;
public class sum_number
	public static void main(String[] args)
		int a,b,c, sum;
		Scanner input = new Scanner(;

		System.out.print("Enter any number:\n");
		a = input.nextInt();

		System.out.print("Enter another number:");
		b = input.nextInt();


		System.out.print("The addtion result of the entered numbers is: " +z);

	public static isum(int a, int b)

		int z;
		z= a+b;
		return z;


//Here is the result what I got. Please help me by correcting this code:

C:\Users\Sanjib\Documents\ invalid method declaration; return type required
	public static isum(int a, int b)
1 error

Tool completed with exit code 1
Posted 29-Dec-12 18:53pm

1 solution

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Solution 1

Change this

public static isum(int a, int b)

to this:

public static int isum(int a, int b)

In simple words, any method in java has to specify what datatype it will be returning, in this case an integer.

Seems like you are new to programming, I advice you to get a good java book to have a good understanding. I recommend this to get started - Java The Complete Reference[^]
ridoy 30-Dec-12 1:43am
exactly what needed..+5
TorstenH. 30-Dec-12 2:44am
...and please use a IDE like Eclipse or Netbeans. Both are free and both would show you those errors.
suhan 2012 31-Dec-12 5:20am
I changed the line as what Karthik said, but found no improvement. BTW I am using "Java Programming by Joyce Farrell". Is this a good book for me as a beginner? Waiting for your reply..

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