RuntimeMappings is a Java library to allow developers to create mappings directly in Java to deobfuscate obfuscated code. I built this library to create a more easier way to create deobfuscation mappings for Minecraft.
Library Download: https://drive.google.com/uc?export=download&id=0B9WIlK4gDfMzQlA1ZnlYM1plY1k
This Java Library is licensed under the Ms-RSL license. (read-only source, however you can use the library but cannot modify it)