Java math sequence (Beginner)

Question

System.out.print(3+2+1-5+4%2-1/4+6);

Output: 7

How does the sequence of performing math operators work? Does Java follow the algebraic PEMDAS or something else?

Answer 1

Yes, Java follows the standard arithmetic order of operations.

However, you may be expecting a different answer than what you got. This is because the value 1/4 is evaluated using integer arithmetic, because both the 1 and the 4 are integers. The result of 1/4 in integer arithmetic is 0.

To ask the compiler to evaluate this using floating point, use something like 1.0/4.0. After doing that, you should get the floating point result 6.75 (which is probably what you expected).

Answer 2

Java will follow an order of precedence(order of operations)

1. ()
2. *, /, %
3. +, -

That is all you'll need for this problem but there is more here.