Java syntax and logic help "?" and ":"

Question

What does this line do? Mainly, I'm confused about the use of "?" and ":" and what they do (what are they called?).

Integer b1 = b.length > 0 ? b[0] : 0;

Apologies if the question is repeated I haven't been able to find anything related.

Does this answer your question? [What is the Java ?: operator called and what does it do?](https://stackoverflow.com/questions/798545/what-is-the-java-operator-called-and-what-does-it-do) — maloomeister, Aug 10 '21 at 12:20
b.length > 0 ? b[0] : 0; is equal to if(b.length > 0) { b1=b[0]; } else { b1= 0;} — DKS, Aug 10 '21 at 12:24

score 3 · Accepted Answer · answered Aug 10 '21 at 12:21

3

if b length is bigger than 0 it sets b1 to b[0] else it sets b1 to 0

answered Aug 10 '21 at 12:21

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