A great collection of simple java source exmples. These are organized well and provide a wealth of information if your having problems doing something you know has been done before. http://www.java2s.com/ Java Source Examples
I primary write about Ruby development, distributed teams, & dev/PM process. The archives go
back to my first CS classes during college when I was learning to write software. I contribute to a few OSS projects and often work on my own projects. You can find my code on github.