public static void main(String[] str) {

   // Scanner to be used for reading user inputs from console.
   Scanner scanner = new Scanner(System.in);
   int choice = 0;

   String cdName = null;
   String artistName = null;
   String musicGenre = null;
   int year = 0;

   int position = 0;

   int maxSize = 100;

   // Assigning an array to hold CD objects.
   // Initially sets to a max Size defined above.
   CD[] cdCollection = new CD[maxSize];

   // Assigning null to each CD object
   for(int i=0; i<maxSize; i++) {
         cdCollection[i] = null;
   }

   // Running a do-while loop to show the menu repeatedly
   // unless user exits.
   do{

         // This displays menu to user and asks user to select a choice.
         System.out.println("1. Adding CDs to an array of CD objects");
         System.out.println("2. Change the CD_id CD information");
         System.out.println("3. Remove CD based on CD_id");
         System.out.println("4. Search for music genre and list all CDs for the searched genre");
         System.out.println("5. Search the artist and list all the CDs for the searched artist.");
         System.out.println("6. Summarize how many CDs are based on a searched year");
         System.out.println("7. List all CDs in the array of CD objects");
         System.out.println("0. Quit");

         System.out.println("\nPlease select an option (1-7) or 0 to Quit");
         choice = scanner.nextInt();

         // Reading next empty line.
         scanner.nextLine();

         // Based on choice it perform various actions.
         switch (choice) {
            // If chice is 1, then it asks user to provide new CD information, and adds them to the collection
            case 1:
               System.out.print("Enter CD name: ");
               cdName = scanner.nextLine();

               System.out.print("Enter artist name: ");
               artistName = scanner.nextLine();

               System.out.print("Enter music genre: ");
               musicGenre = scanner.nextLine();

               System.out.print("Enter year : ");
               year = scanner.nextInt();

               // Checking if CD collection array is full or not.
               if (position >= 0 && position < maxSize) {
                     CD cd = new CD(position+1, cdName, artistName, musicGenre, year);
                     // Adding new CD information as the next position
                     cdCollection[position] = cd;
                     position++;
               }else {
                     // Otherwise, showing message that array is full.
                     System.out.println("Array is full

This task should render in an executable program in Java. In two ja...