Error Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 at Src.main(Src.java:6)

Question

i am using this program and getting the above error!

public class Src {

    public static void main(String args[]) {
        // TODO Auto-generated method stub
        int a=Integer.parseInt(args[0]);
        int b=Integer.parseInt(args[1]);
        int c=a+b;
        System.out.println(""+c);
    }
}

args is probably empty. check this http://docs.oracle.com/javase/tutorial/essential/environment/cmdLineArgs.html — Leo, Aug 03 '14 at 20:14
Provide more detail,how are you executing the code and all... — Am_I_Helpful, Aug 03 '14 at 20:15
@AbhishekKumarRao-You obviously need to set arguments for main method in eclipse! There is a separate process of that in eclipse. Search on google.com! — Am_I_Helpful, Aug 04 '14 at 15:51

score 2 · Answer 1 · answered Aug 03 '14 at 20:14

You have to pass some arguments at the command line, when you call the program:

java Src arg0 arg1

args is a String[] that gets filled with the command-line values passed when invoking the program, by default it's empty, hence an ArrayIndexOutOfBoundsException is thrown because there's nothing there at index 0.

score 2 · Answer 2 · edited May 23 '17 at 10:26

The problem is that you are trying to read the first element in the args[] array and this element doesn't exist.

The args[] array contains arguments passed during the start of the program in the command line, maybe you're not passing argument.

You can find an example of ArrayIndexOutOfBoundException here: https://stackoverflow.com/a/5554781/2649618

This is the official documentation page on Oracle website (is for Java 7): http://docs.oracle.com/javase/7/docs/api/java/lang/ArrayIndexOutOfBoundsException.html

Error Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0 at Src.main(Src.java:6)

2 Answers2