Java Language Keywords

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Trail: Learning the Java Language
Lesson: Language Basics

Java Language Keywords

Here's a list of Java's keywords. These words are reserved--you cannot use any of these words as names in your Java programs. true, false, and null are not keywords but they are reserved words, so you cannot use them as names in your programs either.

abstract double int strictfp **

boolean else interface super

break extends long switch

byte final native synchronized

case finally new this

catch float package throw

char for private throws

class goto * protected transient

const * if public try

continue implements return void

default import short volatile

do instanceof static while

* indicates a keyword that is not currently used
** indicates a keyword that was added for Java 2

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`abstract`	`double`	`int`	`strictfp` **
`boolean`	`else`	`interface`	`super`
`break`	`extends`	`long`	`switch`
`byte`	`final`	`native`	`synchronized`
`case`	`finally`	`new`	`this`
`catch`	`float`	`package`	`throw`
`char`	`for`	`private`	`throws`
`class`	`goto` *	`protected`	`transient`
`const` *	`if`	`public`	`try`
`continue`	`implements`	`return`	`void`
`default`	`import`	`short`	`volatile`
`do`	`instanceof`	`static`	`while`