Appendix C. Java Reserved Word Summary

Reserved Word

Description

abstract

An abstract class or method

assert

An assertion that a condition is fulfilled

boolean

The Boolean type

break

Breaks out of the current loop or labeled statement

byte

The 8-bit signed integer type

case

A label in a switch statement

catch

The handler for an exception in a try block

char

The 16-bit Unicode character type

class

Defines a class

const

Not used

continue

Skip the remainder of a loop body

default

The default label in a switch statement

do

A loop whose body is executed at least once

double

The 64-bit double-precision floating-point type

else

The alternative clause in an if statement

enum

An enumeration type

extends

Indicates that a class is a subclass of another class

final

A value that cannot be changed after it has been initialized, a method that cannot be overridden, or a class that cannot be extended

finally

A clause of a try block that is always executed

float

The 32-bit single-precision floating-point type

for

A loop with initialization, condition, and update expressions

goto

Not used

if

A conditional branch statement

implements

Indicates that a class realizes an interface

import

Allows the use of class names without the package name

instanceof

Tests whether an object's type is a given type or a subtype thereof

int

The 32-bit integer type

interface

An abstract type with only abstract methods and constants

long

The 64-bit integer type

native

A method implemented in non-Java code

new

Allocates an object

package

A collection of related classes

private

A feature ...

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