Arraylist java program

Question

Help in writing a program using the array list which stores the values of name, address, phone number, date and time (for each customer) and later I need to retrieve the specific information like all the customer's name on a specified date. any help is appreciated.

Code:

public class Details {
    public static void main(String args[]) throws IOException {
        InputStreamReader rdr = new InputStreamReader(System.in);
        BufferedReader br = new BufferedReader(rdr);
        String s;
        s = br.readLine();
        System.out.println("PLEASE ENTER CLIENT NAME");
        String name = br.readLine();
        System.out.println("PLEASE ENTER CLIENT ADDRESS");
        String add = br.readLine();
        System.out.println("PLEASE ENTER CLIENT CONTACT PHONE NUMBER");
        String pnum = br.readLine();
        List list = new ArrayList();
        list.add("name");
        list.add("add");
        list.add("pnum");
        list.add("food");
    }
}

StackOverflow is not a website to generate code for you. Show us what you got, ask specific questions about the things you do not understand (after looking up the question on Google/Stackoverflow). — Turing85
– Turing85, Commented Jun 6, 2015 at 6:23
public class Details { public static void main(String args[]) throws IOException { InputStreamReader rdr = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(rdr); String s; s = br.readLine(); System.out.println("PLEASE ENTER CLIENT NAME"); String name= br.readLine(); System.out.println("PLEASE ENTER CLIENT ADDRESS"); String add= br.readLine(); System.out.println("PLEASE ENTER CLIENT CONTACT PHONE NUMBER"); String pnum= br.readLine(); List list = new ArrayList(); list.add("name"); list.add("add"); list.add("pnum"); list.add("food"); } } — ranjit kumar
– ranjit kumar, Commented Jun 6, 2015 at 6:26
Update your question with the code, indented 4 spaces. Difficult to read in a comment. — Roger Gustavsson
– Roger Gustavsson, Commented Jun 6, 2015 at 6:27
i accepted the data dynamically from user and added to array list but can i add all the details in the same index like the index 0 contains all info of a particular customer — ranjit kumar
– ranjit kumar, Commented Jun 6, 2015 at 6:28
after creating a array list --> List list = new ArrayList() i added the details of name, address pnum and food for only one customer like list.add ("name") is there a way i can add name, address, pnum, food in the index zero of arraylist but not in different indexes — ranjit kumar
– ranjit kumar, Commented Jun 6, 2015 at 6:33

Razib · Accepted Answer · 2015-06-06 06:40:33Z

3

Create a class Customer like this -

public class Customer{
   private String name; 
   private String address;
   private String phoneNumber;
   private Date date;

  public Customer(name, address, phoneNumber, date){

     this.name = name;
     this.address = address;
     this.phoneNumber = phoneNumber;
     this.date = date;
  }

   //getters and setters method

}

After that you create an ArrayList of Customer like this -

List<Customer> `customerList` = new ArrayList<Customer>();

Now create an object/instance of Customer like this -

Customer aCustomer = new Customer("ranjit", "someAddress", "023-859 74", new Date() );

Then add the Customer object/instance aCustomer to ArrayList of Customer - customerList like this:

customerList.add(aCustomer);

In the given way you can more easily handle a Customer. Now you have a single entity containing all the customer attributes (name, address, phoneNumber etc). So you don't need store all the attributes/property in separate ArrayList

edited Jun 6, 2015 at 6:40

answered Jun 6, 2015 at 6:34

Razib

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1 Comment

ranjit kumar Over a year ago

System.out.println("Enter the appointment ID to see the full details :"); int y=in.nextInt(); int r; for(r=0;r<count;r++) { if(all.get(r).getID()==y) { all.get(r).display(); } }i am using this code to retrieve the full details that have been entered using the get statement and display function. this is a small part of my program. i was wondering is there any other way to do it

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