Write a Java program to print the sum of two numbers.

//Method-1

public class Add{
    
    public static void main (String[] args){
        
        System.out.println (10+20);
    }
}

Save this file as 'Add.java'.
Compile: $javac Add.java
Execute: $java Add

Output:

30

//Method-2

public class Add1{
    
    public static void main (String[] args){
        
    int num1 = 10;
    int num2 = 20;
        
    System.out.println ("First number : "+num1);
    System.out.println("Second number : "+num2);
        
    //compute sum
    int sum = num1 + num2;
        
  System.out.println("\nAddition of "+num1+" and "+num2+" is : "+sum);
    }
}

Save this file as 'Add1.java'.
Compile: $javac Add1.java
Execute: $java Add1

Output:

First number : 10
Second number : 20

Addition of 10 and 20 is : 30

Exercise:

1. Write a Java program to print the subtraction of two numbers.
2. Write a Java program to multiply two numbers.
3. Write a Java program to print the division of two numbers.
4. Write a Java program to compute the sum and average of three integer numbers.

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