docs: add link to tandemdude/sqlc-gen-java (#3819)

Co-authored-by: Kyle Gray <[email protected]>

Author: tandemdude

docs/reference/language-support.rst

@@ -19,11 +19,12 @@ New languages can be added via :doc:`plugins <../guides/plugins>`.
 ========  =================================  ===============  ===============  ===============
 Language  Plugin                             MySQL            PostgreSQL       SQLite
 ========  =================================  ===============  ===============  ===============
-F#        `kaashyapan/sqlc-gen-fsharp`_      Not implemented  Beta             Beta
 C#        `DaredevilOSS/sqlc-gen-csharp`_    Beta             Beta             Beta
-Ruby      `DaredevilOSS/sqlc-gen-ruby`_      Beta             Beta             Beta
-PHP       `lcarilla/sqlc-plugin-php-dbal`_   Beta             Not implemented  Not implemented
-Zig       `tinyzimmer/sqlc-gen-zig`_         Not implemented  Beta             Not implemented
+F#        `kaashyapan/sqlc-gen-fsharp`_      N/A              Beta             Beta
+Java      `tandemdude/sqlc-gen-java`_        N/A              Beta             N/A 
+PHP       `lcarilla/sqlc-plugin-php-dbal`_   Beta             N/A              N/A    
+Ruby      `DaredevilOSS/sqlc-gen-ruby`_      Beta             Beta             Beta           
+Zig       `tinyzimmer/sqlc-gen-zig`_         N/A              Beta             N/A            
 [Any]     `fdietze/sqlc-gen-from-template`_  Stable           Stable           Stable
 ========  =================================  ===============  ===============  ===============
 
@@ -36,6 +37,7 @@ Zig       `tinyzimmer/sqlc-gen-zig`_         Not implemented  Beta             N
 .. _DaredevilOSS/sqlc-gen-ruby: https://github.com/DaredevilOSS/sqlc-gen-ruby
 .. _fdietze/sqlc-gen-from-template: https://github.com/fdietze/sqlc-gen-from-template
 .. _lcarilla/sqlc-plugin-php-dbal: https://github.com/lcarilla/sqlc-plugin-php-dbal
+.. _tandemdude/sqlc-gen-java: https://github.com/tandemdude/sqlc-gen-java
 .. _tinyzimmer/sqlc-gen-zig: https://github.com/tinyzimmer/sqlc-gen-zig
 
 Future language support