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.
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I’d skip the ternary and go with
foo = Optional.ofNullable(bar) .map(Bar::baz) .orElse(null);
But if I didn’t, I’d use the first form.
I actually prefer
Optional.of(bar) .map(Bar::baz) .orElse(null)
You can crucify me but there is no way to miss the point in a quick glance here and I doubt that with JVM optimizations there is any meaningful performance impact, exceptionally in business code.