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Java Java Objects Meet Objects Welcome Back

Richard Carrera
Richard Carrera
1,342 Points
Posted by Richard Carrera
Richard Carrera
1,342 Points

So basically depending on what you type "||" or will always print out true while && will print false?

A lil confuse on the operators :/

2 Answers

Ronald Williams
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Ronald Williams
Java Web Development Techdegree Graduate 25,021 Points
Ronald Williams
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Ronald Williams
Java Web Development Techdegree Graduate 25,021 Points

Hello Richard, it depends. Let's say you have two boolean variables: boolean a; boolean b;

Rules for &&: a && b is true if both a = true and b = true. a && b is false if either is false.

Rules for ||: a || b is false if both a = false and b = false. If either a or b is true, then a || b is true.

jeremy krans
jeremy krans
6,178 Points
jeremy krans
jeremy krans
6,178 Points

Just remember that || is asking "or" and && is "and" obviously. So to be true with || you only need one to be true.

An example would be someone needing (photoID || birthCertificate) If you have either one then true, you don't need both, but if you don't have photoID or birthCertificate then false.

If you need (photoID && birthCertificate) then you need both to get true. If you only have one or the other then you get false.