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# Thread: Evaluation of operators in expressions.

1. ## Evaluation of operators in expressions.

Hi, I'm at the stage in my book where it teaches me the order of evaluation with operators.

It says 1 % 2 * 3 evaluates to 3.

I cant work out how this is true?

2. ## Re: Evaluation of operators in expressions.

What would you expect it to evaluate to?

3. ## Re: Evaluation of operators in expressions.

Well you do multiply first right? So it evaluates to 1 % 6, but that cant be right?

What is the right way of evaluating this?

4. ## Re: Evaluation of operators in expressions.

Recommended reading: Operators (The Java™ Tutorials > Learning the Java Language > Language Basics)

Basically, the mod operator IS a multiplicative operator (so is division), so they are the same precedence, so they are evaluated left-to-right.

5. ## Re: Evaluation of operators in expressions.

So what is the remainder of 1 % 2?

6. ## Re: Evaluation of operators in expressions.

Originally Posted by TP-Oreilly
So what is the remainder of 1 % 2?
What do you think it is? What happens when you write a small program to test it out?

7. ## Re: Evaluation of operators in expressions.

1 % 2 is 1 when i tested it, so yeah it'll evaluate to 3, but how does it evaluate to that, obviously it does, but atm i'm not understanding why. 1 devided 2 is .5, so can you tell me how it evaluates to 1 please.

Thanks.

8. ## Re: Evaluation of operators in expressions.

% is not divide - it's "remainder after integer division". 1 can be integer-divided by 2 exactly zero times. The remainder is 1.

9. ## The Following User Says Thank You to Sean4u For This Useful Post:

KevinWorkman (September 23rd, 2011)