[Quickfix-users] DIfference between quickfixj-1.5.1-java4-bin.zip and quickfixj-1.5.1-bin.zip

[Ben S. <bxs...@ya...>]

When I go to page

http://sourceforge.net/projects/quickfixj/files/QuickFIX_J/1.5.1/

then there are two similar packages:

quickfixj-1.5.1-java4-bin.zip 
and 
quickfixj-1.5.1-bin.zip

What is the difference between them?

Thank you
Ben