error: package does not exist

I am trying to add an external forge mod to mine and when I try to import it it tells me this

I know that I have added it to the build path. Does anyone know the solution to this?

warning: [options] bootstrap class path not set in conjunction with -source 1.6
C:\Users\theno\Desktop\forge\build\sources\java\me\xthegamerplayz\ResetStats\main.java:5: error: package JinRyuu.JRMCore does not exist
import JinRyuu.JRMCore.JRMCoreH;
                      ^
C:\Users\theno\Desktop\forge\build\sources\java\me\xthegamerplayz\ResetStats\main.java:25: error: cannot find symbol
        int[] PlyrAttrbts = JRMCoreH.PlyrAttrbts(par1EntityPlayer);
                            ^
  symbol:   variable JRMCoreH
  location: class main
2 errors
1 warning

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileJava'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.