Use a BufferedReader (or a Scanner) to get Strings for each individual line. Do you know how to do that?
Then you can use regular expressions or something like StringTokenizer to pick out the individual elements. Or you could use a Scanner to do it. Or you could use something like StreamTokenizer.
The choice will depend on the details of the project or the file format.
It's probably easiest to use a regexp.
Offhand, a regexp like this may work:
^(.*) (\d+);(\d+)([NESW]) (\d+);(\d+)([NESW])$
But that's just an initial guesstimate.