SVN Usage

To checkout the source simply type:

svn co https://jnode.svn.sourceforge.net/svnroot/jnode/trunk/ foo

which creates a new directory called foo (Mind the space between "trunk/" and "foo"!) . In this directory all stuff of the repository in /jnode/trunk will be copied to foo/ on your local computer.
See more, please refer to SVN Usage

Version Control with Subversion, a free book about Subversion