(intValue % 2) vs (intValue & 1)

[Courier]

They accomplish the same thing (for non-negative integers), (evaluate to 1 or 0 if intValue is odd or even, respectively). Is one faster? I know it is a micro optimisation, but I'm curious. I'm guessing they are compiled into essentially the same thing.

[Norm]

Write a test program, compile it, use the javap command to disassemble the class file and see what code is generated for each.
In machine code, the AND would be a single instruction. I don't know what the compiler generates for %

[JosAH]

They accomplish the same thing (for non-negative integers), (evaluate to 1 or 0 if intValue is odd or even, respectively). Is one faster? I know it is a micro optimisation, but I'm curious. I'm guessing they are compiled into essentially the same thing.

The javac compiler generates the 'irem' and 'iand' (for ints) instructions for the % and & operators respectively; it leaves it to the jit compiler to do anything smart with them ...

kind regards,

Jos