Problem : Write a program that adds two arguments that passed through command line arguments?

Contents

1. 1 Program :
   1. 1.1 Step 1 - Coding
   2. 1.2 Step 2 - Deployment
   3. 1.3 Step 3 - Testing
   4. 1.4 Output

Program :

Step 1 - Coding

Create a text file c:\sunilos\Add.java  and copy below contents.

/*
 * A program which take two integer from command line argument and add.
 */


public class Add {

    public static void main(String[] args) {

        int a = Integer.parseInt(args[0]); //Integer.parseInt method converts String data type into Integer
        int b = Integer.parseInt(args[1]);

        int sum = a + b;

        System.out.println("Sum is " + sum);
    }
}

Step 2 - Deployment

1. Create a folder 'c:\sunilos'. 
2. Create or copy Add.java  into 'c:\sunilos' folder.
3. Open your command prompt and go to  'c:\sunilos'
   
4. Compile Add.java with help of 
• javac Add.java command.  Command will create class file in the same folder.
5. Congratulations!! your Java program is ready to serve.

Step 3 - Testing

1. Make sure you are on Command Prompt under c:\sunilos directory
   
2. Now start your java program from command prompt with help of 
• java Add 5 9 command.

Output

It will display result
Sum is 14


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