import java.util.HashSet;

public class Main {

    public static void main(String[] args) {
        HashSet<Accounts> set = new HashSet<Accounts>();
        Accounts object1 = new Accounts();
        Accounts object2 = new Accounts();
        Accounts object3 = new Accounts();
        object3.username = "user1";
        object3.password = "pass1";
        object2.username = "user1";
        object2.password = "pass1";
        object1.username = "user3";
        object1.password = "pass3";
        set.add(object1);
        set.add(object2);
        set.add(object3);
        for (Accounts acc : set) {
            System.out.println(acc.username + "\t" + acc.password);
        }
        System.out.print(object3.equals(object2));
    }

}