ZCW-PhoneBook/PhoneBook.java

import java.util.*;
/**
 * Created by leon on 1/23/18.
 */
public class PhoneBook {
    private String phoneNumber;
    private String name;

    private Map<String,String> input = new TreeMap<String,String>();

    public static void main(String [] args){

    }

    public PhoneBook(){
        this.input = new TreeMap<String, String>();
    }

    public void display(){
        if(this.input.containsKey(name)){
            for(Map.Entry<String,String> input: input.entrySet()){

                String value = input.getValue();
                String key = input.getKey();
            }

        }
    }

    public void remove(String name){
        this.input.remove(name);
    }

    public void AddInput(String name,String phoneNumber){
        this.input.put(name,phoneNumber);
    }
}