相关疑难解决方法(0)

我有一些像这样的代码:

class Foo {
    public double x;
}

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

    // Is this a valid way to test for zero? 'x' hasn't been set to anything yet.
    if (foo.x == 0) {

    }

    foo.x = 0.0;

    // Will the same test be valid?
    if (foo.x == 0) {

    }
}

我基本上希望将来避免被零除的例外.

谢谢