Why .NET developers should learn Java, and vice versa
from: Why .NET developers should learn Java, and vice versa
Take a day or two, learn the platform you don't routinely write code on, and take a day or so every month to look around at the tools and technologies that are out there. I think you'll be amazed at how rich and powerful the "other guys" are, and your own skills will grow immeasurably as a result.
他山之石，可以攻玉。