Java syntax: Difference between revisions

Revision as of 02:42, 4 April 2025

Revision as of 11:25, 8 April 2025

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===Keywords===

{{Main|List of Java keywords}}

====Keywords====

{| style="width:75%" align="center" class="wikitable"

The following words are keywords and cannot be used as identifiers under any circumstances.

|--

{{div col|colwidth=15em}}

| abstract

* <code>_</code>

| continue

* <code>abstract</code>

| for

* <code>assert</code>

| new

* <code>boolean</code>

| switch

* <code>break</code>

|-

* <code>byte</code>

| assert

* <code>case</code>

| default

* <code>catch</code>

| goto

* <code>char</code>

| package

* <code>class</code>

| synchronized

* <code>continue</code>

|-

* <code>default</code>

| boolean

* <code>do</code>

| do

* <code>double</code>

| if

* <code>else</code>

| private

* <code>enum</code>

| this

* <code>extends</code>

|-

* <code>final</code>

| break

* <code>finally</code>

| double

* <code>float</code>

| implements

* <code>for</code>

| protected

* <code>if</code>

| throw

* <code>implements</code>

|-

* <code>import</code>

| byte

* <code>instanceof</code>

| else

* <code>int</code>

| import

* <code>interface</code>

| public

* <code>long</code>

| throws

* <code>native</code>

|-

* <code>new</code>

| case

* <code>package</code>

| enum

* <code>private</code>

| instanceof

* <code>protected</code>

| return

* <code>public</code>

| transient

* <code>return</code>

|-

* <code>short</code>

| catch

* <code>static</code>

| extends

* <code>super</code>

| int

* <code>switch</code>

| short

* <code>synchronized</code>

| try

* <code>this</code>

|-

* <code>throw</code>

|char

* <code>throws</code>

|final

* <code>transient</code>

|interface

* <code>try</code>

|static

* <code>void</code>

|var

* <code>volatile</code>

|-

* <code>while</code>

| class

{{div col end}}

| finally

| long

====Reserved identifiers====

| strictfp

The following words are contextual keywords and are only restricted in certain contexts.

| void

{{div col|colwidth=15em}}

|-

* <code>exports</code>

| const

* <code>module</code>

| float

* <code>non-sealed</code>

| native

* <code>open</code>

| super

* <code>opens</code>

| volatile

* <code>permits</code>

|-

* <code>provides</code>

| while

* <code>record</code>

|

* <code>requires</code>

|

* <code>sealed</code>

|

* <code>to</code>

|

* <code>transitive</code>

|}

* <code>var</code>

* <code>when</code>

* <code>with</code>

* <code>yield</code>

{{div col end}}

====Reserved words for literal values====

The following words refer to literal values used by the language.

{{div col|colwidth=15em}}

* <code>true</code>

* <code>false</code>

* <code>null</code>

{{div col end}}

====Unused====

The following words are reserved as keywords, but currently have no use or purpose.

{{div col|colwidth=15em}}

* <code>const</code>

* <code>goto</code>

* <code>strictfp</code>

{{div col end}}

===Literals===