Simple List question

Question

i have a table with phone number and a flag indicator, Like this
Phone number ind.
555 0000 1
555 1111 2
555 0000 1
555 1111 2
555 1111 1
When the user clicks submit, I would like to retreive the phone numbers with diff. indicators only. 555 1111 in this case. Could anyone suggest how i could do this? And trust me, i tried a lot before posting here, so please help!

Answer 1

Clearly you have a few more steps to implement, but my first suggestion is that this practice is not ideal:
>
ArrayList arr = new ArrayList ();
arr.add(phoneNum);
arr.add(ind);I'd have a POJO that encapsulated a phone number and an indicator
public class Etornedo {
    String phoneNumber;
    String indicator;
     * @param phoneNumber
     * @param indicator
    public Etornedo(String phoneNumber, String indicator) {
        super();
        this.phoneNumber = phoneNumber;
        this.indicator = indicator;
    }and do
ArrayList arr = new ArrayList ();
arr.add(new Etornedo(phoneNum, ind));The easiest way to do this is to write a method such as in your Etornedo class to do the comparison, iterate through your array list, and if any of the objects match the comparison, keep that value in a separate list
    public boolean phoneNumbersMatchButIndicatorsDoNot(Etornedo compareEtornedo) {
        boolean phoneNumbersMatch = compareEtornedo.getPhoneNumber().equals(this.getPhoneNumber());
        boolean indicatorsMatch = compareEtornedo.getIndicator().equals(this.getIndicator());
        return (phoneNumbersMatch && !indicatorsMatch);
    }