Java Version Almanac

21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
1.4
1.3
1.2
1.1
1.0

Java 21

Version: 21 Release date: 2023-09-15 EOL date: 2028-09 bytecode: 65.0

Documentation: notes , api

Distro

TCK

Vendor

License

Platforms

Oracle OpenJDK 21

Oracle

GPLv2+CE

linux:arm64 /x64 /

macos:arm64 /x64 /

windows:x64 /

SAP

GPLv2+CE

alpine:x64 /

linux:arm64 /ppc64le /x64 /

macos:arm64 /x64 /

windows:x64 /

Zulu Builds of OpenJDK 21

Azul Systems

GPLv2+CE

alpine:x64 /

linux:x86 /x64 /

windows:x86 /x64 /

macos:x64 /arm64 /

Technology Compatibility Kit

New Features

JVM

Generational Shenandoah (Experimental) ( JEP 404 )
Generational ZGC ( JEP 439 )
Deprecate the Windows 32-bit x86 Port for Removal ( JEP 449 )
Prepare to Disallow the Dynamic Loading of Agents ( JEP 451 )

Language

String Templates Preview ( JEP 430 )
Record Patterns ( JEP 440 )
Pattern Matching for switch ( JEP 441 )
Unnamed Patterns and Variables Preview ( JEP 443 )
Unnamed Classes and Instance Main Methods Preview ( JEP 445 )

API

Sequenced Collections ( JEP 431 )
Foreign Function & Memory API (Third Preview) Preview ( JEP 442 )
Virtual Threads ( JEP 444 )
Key Encapsulation Mechanism API ( JEP 452 )

New APIs

Compare to Java:

20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
1.4
1.3
1.2
1.1