Java Reference
In-Depth Information
Chapter 9. Operators and Expressions
Work is of two kinds: first, altering the position of matter at or near
the earth's surface relative to other matter; second, telling other
people to do so.
Bertrand Russell
This chapter teaches you about the fundamental computational building
blocks of the programming languagenamely, operators and expressions.
You have already seen a lot of code and have gained familiarity with its
components. This chapter describes these basic elements in detail.
Each operator is described in terms of its basic operation, upon operands
of the base expected typesuch as a numeric primitive type or a reference
type. The actual evaluation of an expression in a program may involve
type conversions as described in
Section 9.4
on page
216
.
