Unary Operators « Operators « SCJP

2.2.Unary Operators
2.2.1.Unary operators take only a single operand.
2.2.2.The unary operators are used to increment, decrement, or change the sign of a value.
2.2.3.Increment and Decrement
2.2.4.+ and - operators are applied to a value of byte, char, and short types, the value is converted to an int.
2.2.5.The ++ operators may appear before the value (prefix) or after the value (postfix).
2.2.6.preincrement or pre-decrement, post-increment or post-decrement
2.2.7.mixing the increment and decrement operators with other operators
2.2.8.increment or decrement operators on a final variable.