Java Logical Operators

Logical operators

&&, ||, &, | and !

&

And. Returns a true value if both expressions are true. This operator always evaluates both expressions.

&&

And. Returns a true value if both expressions are true. This operator only evaluates the second expression if necessary.

expression

Is a construct made up of variables, operators, and method invocations, which are constructed according to the syntax of the language, that evaluates to a single value.

1.5 - 1.7

Java Development Kit (JDK)

!

Not. Reverses the value of the expression.

|

Or. Returns a true value if either expression is true. This operator always evaluates both expressions.

||

Or. Returns a true value if either expression is true. This operator only evaluates the second expression if necessary.

1.2 - 1.4

Software Development Kit (SDK)

short-circuit operator

The && and || only evaluate the second expression if necessary.

Web apps

applet

order of precendence for logical, arithmetic and relational operations

arithmetic, then relational and then logical