typing password in command prompt

I have had this problem myself. I found a solution at the following web site:

http://java.sun.com/developer/technicalArticles/Security/pwordmask/

Not a pefect solution but it was the best I could come up with.

It lacks of details here. Is it a net program using .JSP or a usual program using a java GUI.
If it's on the net, just like any programing language you might use, just send a html form to the servlet.
If it's a GUI just put in a password field in it.