HashMap String Return

[kizilbas1]

Hi,

I'am having difficulty to make this work.

I have a class named Contest and List. Contest constructor has few parameters and also have another parameter which is called 'locations'. What i need to do is that in my List class, I have to use the return method i have created in Contest class and use that method to return all locations used for contests in the HashMap that I created in List class. It is just too difficulty, confusing I can't even demonstrate the idea clearly lol Help please :?

regards

[hardwired]

Code:

import java.util.*;

public class ContestLocations {
    public static void main(String[] args) {
        ContestList contestList = new ContestList();
        // Add some Contests.
        contestList.addContest(new Contest("sing", "12 Mar", "Dallas, TX"));
        contestList.addContest(new Contest("draw", "19 Mar", "Tampa, FL"));
        contestList.addContest(new Contest("ride", "22 Mar", "Stockton, CA"));
        contestList.addContest(new Contest("sail", "22 Mar", "Tampa, FL"));
        contestList.addContest(new Contest("ride", "29 Mar", "Cheyenne, WY"));
        contestList.addContest(new Contest("sail", "30 Mar", "Santa Cruz, CA"));
        // Get the locations of the contests.
        List<String> locs = contestList.getLocations();
        System.out.println("locs = " + locs);
    }
}

class Contest {
    String name;
    String date;
    String location;

    Contest(String name, String date, String location) {
        this.name = name;
        this.date = date;
        this.location = location;
    }

    public String getLocation() { return location; }
}

class ContestList {
    List<Contest> list = new ArrayList<Contest>();

    public void addContest(Contest contest) {
        list.add(contest);
    }

    public List<String> getLocations() {
        List<String> allLocations = new ArrayList<String>();
        for(int j = 0; j < list.size(); j++) {
            Contest contest = (Contest)list.get(j);
            String location = contest.getLocation();
            // Avoid duplicate locations.
            if(!allLocations.contains(location)) {
                allLocations.add(location);
            }
        }
        return allLocations;
    }
}