frk feri - 2009-02-05

Hello,
My question is a very general one.
I want to compile the hypergraph project, but I don’t know which file I should compile first.
I tried to compile HG with the following command :

C:\Program Files\Java\jdk1.5.0_16\bin>javac hypergraph\applications\hexplorer\HExplorerApplet.java -Xlint

But unfortunately, I received the following message error:

hypergraph\applications\hexplorer\HExplorerApplet.java:59: warning: [serial] serializable class hypergraph.applications.hexplorer.HExplorerApplet has no definit
ion of serialVersionUID
public class HExplorerApplet extends JApplet {
       ^
1 warning

Have someone an idea about this error? Please help.