User.java

package project;

import java.util.ArrayList;

public class User {

	private ArrayList<Auction> subscribedAuction;
	
	public void setSubscribedAuction(ArrayList<Auction> subscribedAuction) {
		this.subscribedAuction = subscribedAuction;
	}

	public static User getInstance() {
		// TODO Auto-generated method stub
		return null;
	}

	public boolean login(String username, String email, String password) {
		// TODO Auto-generated method stub
		return false;
	}

	public ArrayList<Auction> retrieveSubscribedAuction() {
		// TODO Auto-generated method stub
		return null;
	}

	public boolean becomeSeller(String ssn) {
		// TODO Auto-generated method stub
		return false;
	}

}