Unable to compile, cannot find symbol - variable arg

Question

Hi, I'm new to Java. I have tried to compile the following code. but it won't work
public class Testing
public static void main(String[] args)
int size = args.length;
int largest = -9;
for ( int i = 0; i<size; i++ )
if ( arg[i] > largest )largest = arg;
System.out.println("Largest is " +largest);
I have tried adding int x = Integer.parseInt(args[i]);
but the same error code...
Could it be compiler problem?i'm using BlueJ.
Thanks for helping...

Answer 1

It is because you a comparin a String to an int. This won't work. You need to convert your String to and int.
Take a look at this:
public class Testing
    public static void main(String[] args)
            int size = args.length;
            int largest = -9;
            int value;
            for ( int i = 0; i<size; i++ )
                   value=Integer.parseInt(args); //converts the String to an int
if ( value > largest )largest = value;
System.out.println("Largest is " +largest);
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Integer.html
You need to read the API to check what methods you can use. If you have a problem with say a Sting then google for "Java String API" and view the methods in the String class. You need to make yourself familiar with whats available.