If you want to spare your wrists and brachial plexus while trying out Salsa for java ( not to be confused with Sun’s JackPot ) then this can be handy.
First copy the salsa.jar to, say, salsac.jar
Open the jar with, say, an unzip, and extract with directory the Manifest.mf to some root drive ( I tolerate a /META-INF on a spare drive for this task ).
Then add one line to the extracted Manifest.mf
An example would be
Main-Class: salsac.SalsaCompiler
Now just add that back into the jar by your fave means.
From the jar’s directory test with
java -cp salsac.jar
and
java -cp salsac.jar -version
And enjoy!