Simulator based on Java (DES)

Good Day everyone and all the best wishes to have lovely weekend
I boosted last week request Tutor but sadly till this moment there nothing seriously to talk about.
Thus, I post again my requirement and I will be more specific.

I would like to have urgent help. I faced some problems in my code based on Java (NetBeans). The aim is to build a Discrete Event simulation for Wireless Sensor Networks.
My problem is how to assign time based on an internal clock inside code and how to broadcasting Hello messages to all nodes in the network without using recursion concept. I need to discuss these things with a professional in Java and DES concepts. I have about 40 days to get the same results as my benchmark article.
Please I need an expert on Java and have knowledge in Wireless sensor network simulators like NS2 and Omnet++.
It is not easy for my to explain all the basics, I prefer someone has the needed requirement.
I almost finish but my results not good enough because I have some bugs. I need any help either reimplementation the full benchmark work or modifying my code to get the same results of the paper.