create and test a program CourseList.java to process students and their classes:

You have a list of student IDs followed by the course number (separated by a space) that the student is enrolled in. The listing is in no particular order.

For example, if student 1 is in CS100 and CS200 while student 2 is in CS105 and MATH210 then the list might look like this: 1 CS100 2 MATH210 2 CS105 1 CS200

Write a program that reads data in this format from the console. If the ID is 1 then stop inputting data. Use the HashMap class to map from an Integer (the student ID) to an ArrayList that holds all of the classes that the student is enrolled in. The declaration should look like this: Map> students = new HashMap<>();

After all data is entered, iterate through the Map and output the student ID and all courses stored in the ArrayList for that student. The result should be a list of classes organized by student ID.

Hints:

Loop, using nextInt and next to read the ID & course name.

The first time you see a student ID you must create a new ArrayList object, add the course name to it, and put that ArrayList in the Map as the value with ID as key.

When you see an ID that already exists as a key in the Map add the course name to the existing ArrayList at that key.

At the end to go through the Map and println each key + its ArrayList object that will call the ArrayList toString, which prints all its elements.