Java Program to Add Two Numbers

Let us see different modes of adding 2 numbers. Below are the contents of this post

• write a java program to add two numbers with predefined values
• write a java program to add two numbers with user-entered values
• write a java program to add 2 numbers using function

For in-depth knowledge about the below programs check below topics

• Java Identifiers
• Java Modifiers
• Data Types

Write a java program to add two numbers with predefined values

package addNumbers;

public class SumOfTwoNumbersWithPredefinedValues {

	public static void main(String[] args) {
		
		int sumNumber1=25;
		int sumNumber2=13;
		
		System.out.println("Sum of two numbers is :" +(sumNumber1+sumNumber2));

	}
}

Output

Sum of two numbers is :38

Write a java program to add two numbers with user-entered values

package addNumbers;

import java.util.Scanner;

public class SumOfTwoNumbersWithUserDefinedValues {

	public static void main(String[] args) {
			
		int sumNumber1;
		int sumNumber2;
		Scanner scanner = new Scanner(System.in);
		
		System.out.println("Enter First Magic Number :");
		sumNumber1=scanner.nextInt();
		
		System.out.println("Enter Second Magic Number :");
		sumNumber2=scanner.nextInt();
		
		System.out.println("Sum of two numbers :"+(sumNumber1+sumNumber2));

	}
}

Output

Enter First Magic Number :
96
Enter Second Magic Number :
27
Sum of two numbers :123

Write a java program to add 2 numbers using function

There is a slight difference in this method. Here we are replacing the arithmetic operator with a predefined function. By using this function we can able to sum all types of values like integer, long, float, negative values.

        Integer.sum(int a, int b)

package addNumbers;

import java.util.Scanner;

public class SumOfTwoNumbersWithUserDefinedValues {

	public static void main(String[] args) {
			
		int sumNumber1;
		int sumNumber2;
		Scanner scanner = new Scanner(System.in);
		
		System.out.println("Enter First Magic Number :");
		sumNumber1=scanner.nextInt();
		
		System.out.println("Enter Second Magic Number :");
		sumNumber2=scanner.nextInt();
		
		System.out.println("Sum of two numbers :"+Integer.sum(sumNumber1,sumNumber2));

	}
}

Output

Enter First Magic Number :
564
Enter Second Magic Number :
54
Sum of two numbers :618

Hope this article will help you.