What's wrong with this code that it doesn't compile?

For some reason the true and false are considered "incompatible types". Am I only suppose to run this through a boolean method? What's wrong with it.

for(int i = 0; i < array.length ; i++)
{
int val = (array[i] % 2);
if(val == 0)
array[i] = true;
else
array[i] = false;
}
Jon Skeet
people
quotationmark

Well array is probably an int[], given that you're using array[i] % 2 and assigning the result to an int.

There's no conversion from boolean to int, so you can't store your result back in the int[] array. It's not clear what you're trying to do, but that's why it's not compiling.

Aside

If you had a separate boolean[] of the same size, that would work - although it would be more simply written as:

boolean[] even = new boolean[array.length];
for (int i = 0; i < array.length; i++) {
    even[i] = (array[i] % 2) == 0;
}

Any time you find yourself with:

if (someCondition) {
    doSomething(true);
} else {
    doSomething(false);
}

you should consider refactoring it to:

doSomething(someCondition);

people

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