CSP

A particularly important objective for developers producing of concurrent systems is to produce designs that always give consistent results and cannot deadlock (see The Four Horsemen on why this can be difficult).

I wrote about the Spring Framework Mission Statement earlier. This article follows it by examining the second Spring mission statement bullet, which concerns the use of interfaces in Java:

• It's best to program to interfaces, rather than classes. Spring reduces the complexity cost of using interfaces to zero.

Everyone knows this is a Good Thing - but why is it good?