How to test if a double is zero?

Question

I have some code like this:

class Foo {
    public double x;
}

void test() {
    Foo foo = new Foo();

    // Is this a valid way to test for zero? \'x\' ha         


        

Answer 1

In Java, 0 is the same as 0.0, and doubles default to 0 (though many advise always setting them explicitly for improved readability). I have checked and foo.x == 0 and foo.x == 0.0 are both true if foo.x is zero