Originally posted by marc weber:
Welcome to JavaRanch!
Floating-point primitives (float and double) use IEEE 754 standards, and their range comes at the expense of precision. These details are beyond the scope of the SCJP exam, so "n/a" is probably appropriate for a study guide.
(Also, note that float and double types can represent negative or positive infinity.)
Originally posted by marc weber:
Keep in mind that Java boolean types are not "numeric." Unlike some languages, you cannot treat these as zeros and ones. Also, the size of a Java boolean is not specified.