Go through my hobby list to show how many students share the same hobby with me // for each of my hobbies.

The code should loop through each hobby in your hobby list, and then for each hobby, it should loop through each student in the student list and check if the student has the same hobby. If the student does have the same hobby, then the count of shared hobbies should be incremented.

Here is an example implementation of this code:

private static int findSharedHobbies(ArrayList<Student> studentList, ArrayList<String> myHobbyList) {
    int sharedHobbies = 0; // initialize the count of shared hobbies to 0
    for (String hobby : myHobbyList) { // loop through each hobby in your hobby list
        for (Student student : studentList) { // loop through each student in the student list
            if (student.getHobbies().contains(hobby)) { // check if the student has the same hobby
                sharedHobbies++; // increment the count of shared hobbies
            }
        }
    }
    return sharedHobbies; // return the count of shared hobbies
}

This code assumes that the `Student` class has a method called `getHobbies()` that returns a list of hobbies for the student. If your `Student` class has a different method name or structure, you may need to adjust this code accordingly.