Some errors when working with arrays in Java

I think you should define the count and name before you call

Quiz myQuiz = new Quiz(int count, String name);

In addition, you don't need int and string identifier before you construct a Quiz object.

So basically, your code should be like

int count = **;
String name = "***";
Quiz myQuiz = new Quiz(count,name);

When you call a method you don't need to specify the data types (only when defining a method)

e.g.

Quiz myQuiz = new Quiz(count, name);
//vs
Quiz myQuiz = new Quiz(int count, String name);

Since the data types are specified when you define the method, Java already knows what they are. You only need to pass the values.

Here's something that will COMPILE--ONLY to give you an idea of syntax and declaration requirements--but it won't come close to doing what you want. Good luck.

package javaapplication75;

public class Quiz {

 int count; 
 String name; 
 int[] scores; 

 public Quiz (int count, String name2) 
 { 
     count = 0;       // Not sure why 0...
     name = name2; }
 }


package javaapplication75;

    import java.util.*;

    public class Assignment7
    {
  private static int numAdd;  // need to declare these two vars
  private static int numDelete;


       public static void main (String[] args) {

           Quiz myQuiz = new Quiz(5, "D"); // doesn't do anything good, but compiles

           Scanner console = new Scanner (System.in);

           String choice;
           char command;

           // print the menu
           printMenu();

           do
           {
               // ask a user to choose a command
               System.out.println("\nPlease enter a command or type ?");
               choice = console.next().toLowerCase();
               command = choice.charAt(0);

               switch (command)
                {
                     case 'n':  //asks and prints the quiz size and name of student
                          System.out.println("n [Create a new Quiz]");
                          System.out.println("[Input the size of quizzes]: ");
                          myQuiz.count = console.nextInt()
                              ;
                          System.out.print(myQuiz.scores.length);
                          System.out.println("[Input the name of student]: ");
                          myQuiz.name = console.nextLine();
                          System.out.print(myQuiz.name);

                          break;
                     case 'a': //  adds a score
                          System.out.println("a [Add a score]: ");
                          numAdd = console.nextInt();
                          System.out.print(numAdd);

                          break;
                     case 'd': // deletes a score
                          System.out.println("d [Delete a score]: ");
                          numDelete = console.nextInt();
                          System.out.print(numDelete);

                         break;

                    case 'p': //prints the information
                        System.out.println("p [Print the information]: ");
                        System.out.println(myQuiz.name);
                        System.out.println(myQuiz.scores);
                          break;


                    case '?':
                          printMenu();
                          break;

                    case 'q':
                          break;


                    default:
                           System.out.println("Invalid input");

                }

            } while (command != 'q');

        }  //end of the main method


       public static void printMenu()
       {
        System.out.print("\nCommand Options\n"
                       + "-----------------------------------\n"
                       + "n: Create a new data\n"
                       + "a: Add a score\n"
                       + "d: Delete a score\n"
                       + "p: Print the information\n"
                       + "?: display the menu again\n"
                       + "q: Quit this program\n\n");

        } // end of the printMenu method


    }