Does Java check all arguments in "&&" (and) operator even if one of them is false?

Question

I have such code:

if(object != null && object.field != null){
    object.field = "foo";
}

Assume that object is null.

Does this code result in nullPointerException or just if statement won't be executed?

If it does, how to refactor this code to be more elegant (if it is possible of course)?

Answer 1

One way to know it! Test it! How? Well, make a method which prints out something:

public static boolean test(int i)
{
    System.out.println(i);
    return false;
}

...

if (test(1) && test(2) && test(3))
{
    // not reached
}

This prints:

1

So the answer on your question is "no".