Java Java Data Structures Efficiency! Using a Map to store Contact Methods

Steven Morimoto
PRO
Steven Morimoto
Pro Student 1,836 Points

Help on Challenge Task 3

I've been working on this 3rd problem for awhile and I'm stuck. I know that somehow I have to link String methodName to the Map, but I'm a little at a loss as to how to do it. In all previous attempts my code seemed syntactically correct but when the user would type in "pager" they would always be returned "pager" instead of the number. I was wondering how to link the methodName variable to the Map?

com/example/model/Contact.java
package com.example.model;

import java.util.Map;
import java.util.Set;
import java.util.HashMap;

public class Contact {
  private String mFirstName;
  private String mLastName;
  private Map<String, String> mContactMethods;

  public Contact(String firstName, String lastName) {
    mFirstName = firstName;
    mLastName = lastName;
    /* This stores contact methods by name
     * eg:  "phone" => "(555) 555-1234"
     */
    mContactMethods = new HashMap<String, String>();
  }

  public void addContactMethod(String method, String value) {
    mContactMethods.put(method, value);
    // TODO: Add to the contact method map
  }

  /**
   * Returns the available contact methods.  eg: phone, pager,
   *
   * @return The name of the contact methods that are available
   */
  public Set<String> getAvailableContactMethods() {
    // FIXME: This should return the current contact method names.
    Set<String> currentContactMethod = mContactMethods.keySet();
    return currentContactMethod;
  }

  /**
   * Returns the value for the contact method if it exists, 
   *
   * @param methodName  The name of the contact method to look up.
   * @return The name of the contact methods that are available
   */
  public String getContactInfo(String methodName) {
    // FIXME: return the value for the passed in *methodName*

      mContactMethods.put(methodName, String value);
     if(methodName == "pager")
     {
      for(Map.Entry entry : mContactMethods.entrySet())
      {
        System.out.printf("%s is %s%n", entry.getKey(), entry.getValue());
      }
    }
    else if(methodName == "phone")
    {
      for(Map.Entry entry : mContactMethods.entrySet())
      {
        System.out.printf("%s is %s%n", entry.getKey(), entry.getValue());
      }
    }
    else
    {
      methodName == null;
    }
      return methodName;
  }

  public String getFirstName() {
    return mFirstName;
  }

  public String getLastName() {
    return mLastName;
  }

}