Thread: Please HELP! JAVA CODE problem

Hello everybody,

I'm a beginner in this field & I am asking for help .. I wrote my code completely & it says [Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1
at Calculator.main(Calculator.java:12)] .

This is my code :
----------------------------------------

public class Calculator {
	public static void main(String [] args){
		if (args.length != 1) {
			System.out.println("Usage: java Calculator \"operand1 operator operand2\"");
			System.exit(1);
		}
 
		int result = 0;
 
		String[] tokens = args[0].split("  ");
 
		switch (tokens[1].charAt(0) ){
			case '+' : result = Integer.parseInt(tokens[0]) +
					    Integer.parseInt(tokens[2]);
				break;
 
			case '-' : result = Integer.parseInt(tokens[0]) -
					    Integer.parseInt(tokens[2]);
				break;
 
			case '*' : result = Integer.parseInt(tokens[0]) *
					    Integer.parseInt(tokens[2]);
				break;
 
			case '/' : result = Integer.parseInt(tokens[0]) /
					    Integer.parseInt(tokens[2]);
		     }
 
		     System.out.println(tokens[0] + ' ' + tokens[1] + ' ' + tokens[2] + " = " + result);
		}	
	}

---------------------------------
DONE ! thank you for help in advance

exception in thread main java.lang.arrayindexoutofboundsexception 1

At line ??? (shown in the error message) the code used an index of 1 in an array with less than 2 elements. Look at that line of the code and see why the code tried to use an index past the end of the array.

Please edit your post and wrap your code with code tags:
[code=java]
YOUR CODE HERE
[/code]
to get highlighting and preserve formatting.

Did you look at line 12 to see why the code was using an index past the end of the array?
An index of 1 is looking at the second element in the array. The error message says: the array has fewer than 2 elements.