Why am I getting java.lang.ArrayIndexOutOfBoundsException on the 8th line and how to remove the error?

Question

import java.io.*;
class cubeC
{
public static void main(String args[])
{
System.out.println("Please enter the number to find the cube of a digit: ");
int n=Integer.parseInt(args[0]);
int c=n*n*n;
System.out.println("The Cube of Number is : "+c);
}
}

Answer 1

No argument was passed through to args, so most probably it does not contain any data. This means that accessing args[0] will trigger the exception.