Putting a number of variables from a userinput into an array list

Question

I'm writing a program in which it will asks the user to enter some entries like Name, Surname etc and then store all those entries in one location of an arraylist. In other words variables ( name, surname, telephone ) will be added to location 0 of arraylist.

The difficulty I'm finding is when it comes to get all those variables and store them into the location of the array list. Can someone help me ? Thanks.

public class Loans
{
    ArrayList lns = new ArrayList();

    void LoansInput ()
    {
           // Add New Loan Button  

           // Requesting DVD ID
                    String dvdid;
                    dvdid =JOptionPane.showInputDialog("Enter DVD ID Number");

            // Requesting Member Name & Surname
                    String namesurname;
                    namesurname = JOptionPane.showInputDialog("Client Name & Surname");

            // Requesting Member ID Number
                    String mid;
                    mid =JOptionPane.showInputDialog("Client ID Number");

            // Requesting Member ID Number
                    String telephone;
                    telephone =JOptionPane.showInputDialog("Client Telephone Number");

            // Requesting Rental Date
                    String rentaldate;
                    rentaldate =JOptionPane.showInputDialog("Rental Date (DD-MM-YY)");                                    

            // Requesting Return Date
                    String returndate;
                    returndate =JOptionPane.showInputDialog("Return Date (DD-MM-YY)");

What should I add here in order to get all this variables and put them in the Arraylist lns in one location? (Not every entry in different locations)

Johan Sjöberg · Accepted Answer · 2012-02-11 10:52:50Z

1

A good approach would be to create a User object, e.g., (getters and setters left out)

public class User {
   private Stringg surname;
   private String memberId;
   private String telephone;
   // etc. 
}

Then you can store a list of User objects instead

List<User> users = new LinkedList<User>();

You create your user object and populate it from the input you get, e.g.,

User user = new User();
String surname = JOptionPane.showInputDialog("...");
user.setSurname(surname);

users.add(user);

edited Feb 11, 2012 at 10:52

answered Feb 11, 2012 at 10:46

Johan Sjöberg

49.4k22 gold badges135 silver badges150 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Fahim Parkar · Accepted Answer · 2012-02-11 11:15:36Z

0

First create DVD object as below...

class DVD {

    private int dvdId;
    .
    .
    .
    .

    //now set getter setters
    public void setdvdId(int dvdId) {
    this.dvdId = dvdId
    }

    public int getdvdId() {
    return dvdId;
    }

    // similarly for all field
}

Then use DVD object in arraylist as below

class MyProgram {
    public static void main (String args[]) {


    List<DVD> arrayList = new ArrayList<DVD>();

    DVD myDVD = new DVD();
    myDVD.setdvdId(Integer.parseInt(JOPtionPane.showInputDialog("Enter ID")));
    // similarly add other
    .
    .
    .
    .
    .

    arrayList.add(myDVD)

    // similarly add other
    }
}

Good Luck!!!

edited Feb 11, 2012 at 11:15

answered Feb 11, 2012 at 10:59

Fahim Parkar

31.8k46 gold badges168 silver badges285 bronze badges

6 Comments

Andrea Parascandalo Over a year ago

public void setdvdId(int dvdId) { this.dvdId = dvdId; } it tells Incompatible types

Fahim Parkar Over a year ago

see my updated answer... note you will also need to add try.. catch now as if you don't enter number then that statement will throw exception...

Andrea Parascandalo Over a year ago

It still says incompatible types in DVD Class Line 10 this.dvdId = dvdId

Fahim Parkar Over a year ago

goshhh... because mistakenly I had dvdId as string.. see now my updated answer... it should work

Andrea Parascandalo Over a year ago

How should I print the arraylist then ? Because when I try the output is [DVD@ca64df]

|

chkal · Accepted Answer · 2012-02-11 10:47:44Z

0

Why don't you create a class Dvd containing all the fields that you need and store this in the ArrayList?

answered Feb 11, 2012 at 10:47

chkal

5,66824 silver badges27 bronze badges

1 Comment

Andrea Parascandalo Over a year ago

You mean I create a class DVD and ask the user to input the data in there ? But then how will I put them in the array list ?

Petr Mensik · Accepted Answer · 2012-02-11 10:49:36Z

0

You shoul definitely create class for these variables, let's say DVD, then you can use it in your code like

List<DVD> arrayList = new ArrayList<DVD>(); //always use a raw types (List)
DVD dvd = new DVD();
dvd.setId(JOPtionPane.showInputDialog("Enter ID");
//and so on, when you finish, just put the object in the array
arrayList.add(dvd);

And your DVD object should override the hashCode and equals method, so you can efectivelly search DVD objects in your ArrayList

answered Feb 11, 2012 at 10:49

Petr Mensik

27.7k17 gold badges94 silver badges119 bronze badges

Comments

Raj · Accepted Answer · 2012-02-11 11:00:21Z

0

Crate a class with all the variables you need and crate objects for each your and put them into the ArrayList. I think it solves your problem.

answered Feb 11, 2012 at 11:00

Raj

2,49311 gold badges36 silver badges53 bronze badges

Collectives™ on Stack Overflow

Putting a number of variables from a userinput into an array list

5 Answers 5

Comments

Good Luck!!!

6 Comments

1 Comment

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

Comments

Good Luck!!!

6 Comments

1 Comment

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related