Version 3.0 of code Java for 3D simulation of the CCA model

In this paper we provide a new version of program for replacing the previous version. The frequency of traversing the clusters-list was reduced, and some code blocks were optimized properly; in addition, we appended and revised the comments of the source code for some methods or attributes. The compared experimental results show that new version has better time efficiency than the previous version. The previous version of this program (AEUK_v2_0) may be found at dx.doi.org/10.1016/j.cpc.2016.03.016