Java has the Boolean type, so you actually have the keywords 'true' and 'false' in your code. C, for example, doesn't so it doesn't evaluate to 0. C doesn't have the Boolean type, it's just an int.

This page explains Java if-statements and boolean expressions with example code and exercises. See also the associated CodingBat live boolean logic practice problems to practice boolean logic code or ...

The Java ternary operator provides an abbreviated syntax to evaluate a true or false condition, and return a value based on the Boolean result. The Java ternary operator can be used in place of ...