User.java

package project;

import java.util.ArrayList;

public class User {
	
	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;
	}

	public boolean searchItem(String title, Category category) {
		// TODO Auto-generated method stub
		return false;
	}

	public boolean searchAuction(String startTime, String endTime, double price, double bidIncrement, String title,
			Category category) {
		// TODO Auto-generated method stub
		return false;
	}

}