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Which order do you prefer for null testing ternary expressions? (self.java)

submitted 2 years ago by JackbyDev to c/java

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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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[–] [email protected] 5 points 2 years ago* (last edited 2 years ago) (2 children)

In java 9 there is Objects.requireNonNullElse(obj, defaultValue)

[–] JackbyDev 2 points 2 years ago

That wouldn't help in the specific examples above but that's still nice to know about!

[–] JavaCodeWriter 1 points 2 years ago

In java 9 there is Objects.requireNonNullElse(obj, defaultValue)

I did not know this existed, this is amazing.