Measure CPU and memory consumption by each runing process in Java

Dear friends,
Im adithya.A part of my project is to create a small appliation to show the user ,how many system runing process thier memory utilization,CPU Usage,Current System bandwidth(bite rates,upstream and downstream rates) and with some other system information…Currently i got current runing procees its PID and memory usage.
Im in search of the remaings..please help me .

thank you in advance
Adithya