Janett provides a domain-specific language for mapping Java libraries to .Net. We call these files mapping.

Mapping files should be placed in Bin\Mappings\<Mode> directory. Their names should be JavaType-DotNetType.map and they can be grouped based on package:

java.lang.StringBuffer-System.Text.StringBuilder.map
java.io.BufferedReader-System.IO.TextReader.map

or

java.lang
   StringBuffer-System.Text.StringBuilder.map
java.io
   BufferedReader-System.IO.TextReader.map

within mapping files, you can map members of JavaType to DotNetType or ...