public class Client implements WrapperListener {
public Client() {
}
public Integer start(String[] strings) {
return null;
}
public int stop(int i) {
}
public void controlEvent(int i) {
}
public static void main(String[] args) {
WrapperManager.start(new Client(), args);
}
}

в логах:

INFO | wrapper | 2005/01/17 14:48:34 | Waiting to start...
STATUS | wrapper | 2005/01/17 14:48:38 | Launching a JVM...
INFO | jvm 4 | 2005/01/17 14:48:38 | java.lang.NoClassDefFoundError: Client