Operators

J

ava provides a rich operator environment. Most of its operators can be divided into the

following four groups: arithmetic, bitwise, relational, and logical. Java also defines some

additional operators that handle certain special situations. This chapter describes all

of Java's operators except for the type comparison operator **instanceof**, which is examined

in Chapter 13.

Arithmetic Operators

Arithmetic operators are used in mathematical expressions in the same way that they are

used in algebra. The following table lists the arithmetic operators:

Operator

Result

+

Addition

Subtraction (also unar y minus)

*

Multiplication

/

Division

%

Modulus

++

Increment

+=

Addition assignment

=

Subtraction assignment

*=

Multiplication assignment

/=

Division assignment

%=

Modulus assignment

Decrement

The operands of the arithmetic operators must be of a numeric type. You cannot use

them on **boolean **types, but you can use them on **char **types, since the **char **type in Java is,

essentially, a subset of **int**.

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