java code for this problem

Virus Contact Tracing (50 points) In this exam, you will analyse virus contact tracing data. This contact tracing data is one-directional, meaning people who have tested positive for the virus will report the people with which they have had contact. You will load the contact tracing data from a file and create a Graph. The graph will then be used to identify the relationship between the individuals in the data. Each of parts 1 through 4 should be implemented as a method. File Format Each line in the file will be of the form