Kava
Kava is a production-ready Java to C# transpiler optimized for performance. The transpiler works on bytecode and supports the majority of the JDK APIs and Java libraries.
It’s usage can be seen in Alchemic Cutie on all console platforms.
Powerful Java to C# transpiler
Features
Fast compilation to C#
Near 1-to-1 code performance
Full reflection support
Compatibility with .NET 4.5, .NET Core 2.0 and .NET 5.0 onwards
mini2Dx and LibGDX support with targeting to Nintendo Switch, PlayStation 4/5, Xbox One and Xbox Series S|X
Java 8 support (11 & 17 coming soon)