Which do you prefer of these two? The goal is the same. If bar
is null then make foo
null and avoid the exception. In other languages there is the ?.
operator to help with this.
foo = bar == null ? null : bar.baz();
foo = bar != null ? bar.baz() : null;
I ask because I feel like the “English” of the first example is easier to read and has less negations so it is more straightforward, but the second one has the meat of the expression (bar.baz()
) more prominently.
In java 9 there is
Objects.requireNonNullElse(obj, defaultValue)
That wouldn’t help in the specific examples above but that’s still nice to know about!