Need help starting binary tree?

I need a nudge in the right direction. I have this coded so far >>

import java.util.Scanner;

class clubmember {

    public static void main(String[] args) {

        int id;
        String fname, lname;
        Scanner input = new Scanner(System.in);

        System.out.println("ID>");
        id = input.nextInt();

        System.out.println("Fname >");
        fname = input.next();

        System.out.println("lname >");
        lname = input.next();


        Person object1 = new Person(id, fname, lname);

        System.out.println(object1);


    }
}




public class Person {
    private final int id;
    private final String firstName;
    private final String lastName;


    public Person(int id, String firstName, String lastName) {
        this.id = id;
        this.firstName = firstName;
        this.lastName = lastName;
    }

    public int getId() {
        return id;
    }

    public String getFirstName() {
        return firstName;
    }

    public String getLastName() {
        return lastName;
    }

    @Override
    pu开发者_JS百科blic String toString() {
        return String.valueOf(id) + ": " + firstName + " " + lastName;
    }
}

I need to create a binary tree that displays the member id with the name. I have looked at endless binary trees but confused how they actually grab this information then proceed with it. Can anyone give me a starting point or some example code that is similar to this?

Read this excellent introduction to binary trees from the Stanford CS Library.