Coffee GB v2.1.8 is released. Coffee GB is a Gameboy Color emulator written in Java 16 (core) and Kotlin (UI). It's meant to be a development exercise.

Features:
Full support for GB & GBC emulation.
Partial Super Gameboy emulation (borders and palette).
Cycle-exact CPU emulation. Each opcode is split into a few micro-operations (load value from memory, store it to register, etc.) and each micro-operation is run in a separate CPU cycle.
Quite compatible (all the Blargg's tests are passed, although some game still doesn't work)
Rollback-based netplay
MBC1-5 support
Battery saves
Support for zipped ROMs
ROM-based compatibility tests run from Maven

Coffee GB Changelog:
Changes
On Windows, store settings in %LOCALAPPDATA%\Coffee GB\coffeegb.properties. Existing settings are imported from the user profile without changing the old file.
Add --portable to keep settings beside the JAR or an unpacked application launcher. The application directory must be writable; saves and other application data retain their existing locations. The single-file Windows EXE extracts to a temporary directory, so use the JAR or an unpacked application image for persistent portable settings.
Known platform limitations
On macOS, game controllers require a compatible system SDL2 installation. Keyboard input and emulation remain usable without it.
Merged pull requests
#697: Move Windows settings to LocalAppData and add portable mode by @trekawek.
Fixed issues
#694: Windows portable build.

Download: Coffee GB v2.1.8
Source: Here