Directed Graph in Java

I need help in implementing a simple DirectedGraph class in java asap. Class should have methods to print out the graph , perform dfs, bfs , add vertex , add edge and cycle detection . ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform Windows and linux