Please I need help with this JAVA program

Program 2: Make a simple program that counts infected computers on a computer network. The virus spreads through the network, and every computer that is connected to an infected computer is infected. For example, there are seven computers and connected like the figure below. If computer #1 is infected. computer #3 and 6 will be infected through infection of computer #2 and 5. Computer #4 and 7 are safe. So, totally four computers are infected. Please implement your algorithm in Java but not use API Input: In the first linc, a number of computers is given and there is no limit. The second ie is a number of edges that represents a connection between two computers. After second line, each line has two numbers that represent two CSCI/CMPE 3326 Fall 2017 computers that are connected. In the last line, a computer nunber is given as the first computer that is infected Ouput: Number of computers infected by the first infected computer Example Input: 1 2 5 2 5 6 4 7 Output