JProc - download - is a simple java jni interface to the Solaris /proc filesystem. Version 0.4 adds 64-bit native libraries, better formatted output, and a process tree view.
The aim is to allow java applications to obtain the sort of process data that you can get from tools like ps, ptree, prstat, and top.
The current version is a partially implemented proof of concept. It works well enough to convince me that it's worth continuing, but has no pretence of being complete.
Above is a simple screenshot, a simple gui tabular process view. To
use, download, unpack, cd into the jproc-0.X directory, and run
./jproc info.