Question

Suppose I have the following expression

String myString = getStringFromSomeExternalSource();
if (myString != null && myString.trim().length() != 0) {
...
}

Eclipse warns me that myString might be null in the second phrase of the boolean expression. However, I know some that some compilers will exit the boolean expression entirely if the first condition fails. Is this true with Java? Or is the order of evaluation not guaranteed?

Answer 1

However, I know some that some compilers will exit the boolean expression entirely if the first condition fails. Is this true with Java?

Yes, that is known as Short-Circuit evaluation.Operators like && and || are operators that perform such operations.

Or is the order of evaluation not guaranteed?

No,the order of evaluation is guaranteed(from left to right)