question about adding to a vector

[jon ladd]

I want to read in the employee name that is enter from the user and store it to a vector. I have tired it and its under the employee case. All the examples are with data that is already put in to a vector.

  import java.util.*;
public class App {
  // The main entry point for the application.
  public static void main(String[] args) {
    // Variable for holding the number of orders.
    // Constant specifying the maximum number of persons
    // Variable for holding the user's menu choice.
    byte choice = 0;
    // Constants used as case selectors. Each of these corresponds to a menu
    // choice available to the user.
    final byte ADD_CUSTOMER = 1;
    final byte ADD_EMPLOYEE = 2;
    final byte BILLABLE_PERSONS = 3;
    final byte SHOW_CUSTOMERS = 4;
    final byte SHOW_EMPLOYEE = 5;
    final byte SHOW_ALL_PERSONS = 6;
    final byte EXIT = 7;
    // Array of superclass object references. Each element can be used to point
    // to subclass objects.
    Vector Person = new Vector();
    // THE MAIN PROCESSING LOOP of the program. It handles the processing of a
    // single user menu response and is repeated until the user wants to exit.
    while (choice != EXIT) {
      // Display the menu, read the user's response, and draw a separator
      // before processing their request.
      Utility.separator(80, '/');
      System.out.println("PERSON MENU");
      Utility.skip();
      System.out.println("  1  Add a Customer");
      System.out.println("  2  Add an employee");
      System.out.println("  3  Show all billable persons");
      System.out.println("  4  Show all customers");
      System.out.println("  5  Show all employees");
      System.out.println("  6  Show all persons");
      System.out.println("  7  Exit");
      Utility.skip();
      System.out.print("Enter menu choice: ");
      choice = Keyboard.readByte();
      Utility.separator(80, '/');
      // This switch statement is used to direct the logic flow based upon
      // the user's menu selection.
      switch (choice) {
        case ADD_CUSTOMER:
          // Break out of the switch.
          break;
        case ADD_EMPLOYEE:
          String fname = "";
         // Prompt User to give a student name
  System.out.print("Enter Employee First Name ");
// Read employees Name
   fname = Keyboard.readString();
       Person.addElement (String fname);
      
  case BILLABLE_PERSONS:
        case SHOW_CUSTOMERS:
        case SHOW_EMPLOYEE:
        case SHOW_ALL_PERSONS:
        case EXIT:
          break;
          // This is the default case. We get here when the user enters a menu
          // choice that doesn't match any of the above cases.
        default:
          // Display an error message indicating the user made an invalid
          // menu selection and break out of the switch.
          System.out.println("\t" + "Invalid menu choice - try again");
          break;
      }
    }
  }
}
abstract class Person {
  // Private instance variables for order number and amount due.
  private String firstname;
  private String lastname;
  // This constructor accepts one parameter - the order number. It uses the
  // value to initialize the order number and sets the amount due to zero.
  public Person(String iFirstName, String iLastName) {
    firstname = iFirstName;
    lastname = iLastName;
  }
  public void setFname(String newFname) {
    firstname = newFname;
  }
  public void setLname(String newLname) {
    lastname = newLname;
  }
  public String getFname() {
    return firstname;
  }
  public String getLname() {
    return lastname;
  }
  public abstract void fullname();{
}
class Employee extends Person {
  private double payrate;
  /* Add this constructor to the Employee class */
  public Employee(String iFirstName, String iLastName) {
    super(iFirstName, iLastName);
  }
  public void setPrate(double newPrate) {
    payrate = newPrate;
  }
  public double getPrate() {
    return payrate;
  }
  public void fullname() {
 //return getLname() + ", " + getFname();
  }

  //   return getLname() + ", " + getFname();
  //public String toString() {
  // String result =  fullname() + ", " + getPrate() ;
  //return result;
  }
}
interface Billable {
  public void amountDue();
}
class Customer extends Person {
  private double customerbalance;
  public Customer(String iFirstName, String iLastName) {
    super(iFirstName, iLastName);
  }
  public void setCustbal(double newCustbal) {
    customerbalance = newCustbal;
  }
  public double getCustbal() {
    return customerbalance;
  }
   public void fullname() {
//   return getLname() + ", " + getFname();
   }
   //public void String toString() {
    // String result = fullname() + ", " + getCustbal();
    // return result;
   }

[Layne Lund]

You should familiarize yourself with the Java API documentation. You can easily look up the answers to such questions. For example, if you look at the docs for the Vector class, you will see that you an use the add() method (Sorry, the board wouldn't let me link directly to the method since the URL has parenteses in it. You can just scroll down the page above to find it.) to append elements into a Vector. It takes a single argument which is the Object you wish to add. For example:

Vector v = new Vector();
v.add("John Doe");
v.add("Layne Lund");

The Objects can also be reference variables:

String name = "Joe Schmoe";
v.add(name);

You should be able to adapt these examples to fit your particular situation.
HTH
Layne
[ April 29, 2003: Message edited by: Layne Lund ]