incompatible types

**stylelink** · July 10th, 2014, 07:32 AM

hi, i was trying to do some simple stuff on java (i'm totally new at any kind of programming), and here, i got blocked, when i tried to compile my code (which would count to 500 if i am not mistaken), it said incompatible types (i use blueJ). here it is:

public class q3
{
    public static void main (String [] args)
    { int n=1;
        int i=0;
        int w=500;
        while (n>0)
        {
            i=i+n;
            if (i=w)
            {
                break;
            }
        }
        System.out.print (i);
    }
 
}

I tried to put down just 500 instead of w, same response.

Thanks for the answers, bye-bye

**BenjaminJ** · July 10th, 2014, 07:55 AM

You would want to do this with a for loop, I think.

for (int i = 0; i < 500; i++) {
System.out.println(i);
}

Unless you're practicing while/if, in which case I'm not sure.

**GregBrannon** · July 10th, 2014, 08:08 AM

Welcome to the Forum! Please read this topic to learn how to post code correctly and other useful tips for newcomers.

Please post your code correctly per the above link.

'=' is not a comparison operator. '==' is a comparison operator.

**stylelink** · July 10th, 2014, 08:10 AM

well yes i was trying to practice the while/if, and also hoping for an explanation to why my types are incompatible, but thank you anyways

--- Update ---

and thank you greg, so what i should do is just put == instead of = and it will work right?

**Cornix** · July 10th, 2014, 08:10 AM

I just want to point out that:

if (i=w)

is not the same as:

if (i==w)

If you use a single equality sign then you assign a value to a variable.
If you use two equality signs then you compare two values against each other.

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