jtulach@76: package api;
jtulach@76: 
jtulach@76: // BEGIN: forjoe.InterfaceThatJustJoeCanImplement
jtulach@76: public abstract class InterfaceThatJustJoeCanImplement {
jtulach@76:     protected InterfaceThatJustJoeCanImplement() {
jtulach@76:         if (!"impl.joe.JoesImpl".equals(getClass().getName())) {
jtulach@132:             throw new IllegalStateException(
jtulach@132:                 "Sorry, you are not allowed to implement this class"
jtulach@132:             );
jtulach@76:         }
jtulach@76:     }
jtulach@76:     
jtulach@76:     public abstract void everyoneCallThisJoeWillHandleTheRequest();
jtulach@76: }
jtulach@76: // END: forjoe.InterfaceThatJustJoeCanImplement