Sharpen is an Eclipse plug-in useful for multiplatform code development, having the ability to convert from one language to another. Sharpen can convert Java to C# and vice versa. It can be used also to develop Java code with the most recent JDK, as Sharpen can convert between the Java dialects.
If the converted code does not run properly, the user has to remove parts that does not compile, but a better way is to modify methods that do not compile to do their calls by reflection. This would avoid hard links to functionality that does not exist.
It is desirable that Sharpen creates a Java source code version of the backport, to allow debugging on the respective platforms.
Benefits
References
Sharpen Wikipedia(Text) CC BY-SA