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Complete the following class with the appropriate methods shown in the rubric   import java.util.HashMap; import java.util.Set; /** * Stores and manages a map of users. * * @author Java Foundations * @version 4.0 */ public class Users { privateHashMap userMap; /** * Creates a user map to track users. */ publicUsers() { userMap = newHashMap(); } /** * Adds a new user to the user map. * * @param user the user to add */ publicvoidaddUser(Useruser) { userMap.put(user.getUserId(), user); } /** * Retrieves and returns the specified user. * * @param userId the user id of the target user * @return the target user, or null if not found */ publicUsergetUser(StringuserId) { returnuserMap.get(userId); } /** * Returns a set of all user ids. * * @return a set of all user ids in the map */ publicSet getUserIds() { returnuserMap.keySet(); } }

Complete the following class with the appropriate methods shown in the rubric   import java.util.HashMap; import java.util.Set; /** * Stores and manages a map of users. * * @author Java Foundations * @version 4.0 */ public class Users { privateHashMap userMap; /** * Creates a user map to track users. */ publicUsers() { userMap = newHashMap(); } /** * Adds a new user to the user map. * * @param user the user to add */ publicvoidaddUser(Useruser) { userMap.put(user.getUserId(), user); } /** * Retrieves and returns the specified user. * * @param userId the user id of the target user * @return the target user, or null if not found */ publicUsergetUser(StringuserId) { returnuserMap.get(userId); } /** * Returns a set of all user ids. * * @return a set of all user ids in the map */ publicSet getUserIds() { returnuserMap.keySet(); } }

EBK JAVA PROGRAMMING
EBK JAVA PROGRAMMING
9th Edition
ISBN:9781337671385
Author:FARRELL
Publisher:FARRELL
Chapter10: Introduction To Inheritance
Section: Chapter Questions
Problem 1GZ
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Question
Complete the following class with the appropriate methods shown in the rubric
 
import java.util.HashMap;
import java.util.Set;

/**
* Stores and manages a map of users.
*
* @author Java Foundations
* @version 4.0
*/
public class Users
{
privateHashMap<String, User> userMap;

/**
* Creates a user map to track users.
*/
publicUsers()
{
userMap = newHashMap<String, User>();
}

/**
* Adds a new user to the user map.
*
* @param user the user to add
*/
publicvoidaddUser(Useruser)
{
userMap.put(user.getUserId(), user);
}

/**
* Retrieves and returns the specified user.
*
* @param userId the user id of the target user
* @return the target user, or null if not found
*/
publicUsergetUser(StringuserId)
{
returnuserMap.get(userId);
}

/**
* Returns a set of all user ids.
*
* @return a set of all user ids in the map
*/
publicSet<String> getUserIds()
{
returnuserMap.keySet();
}
}
HashMap Project Documentation Driver program and menu Replicate the functionality demonstrated in the video lecture. User class implementation Successful implementation of the user class. Objects of this class adhere to the criteria demonstrated in the video demo. Criteria Users class implementation using hashmap Successful implementation of the users class. Use of the hashmap class as the underlying structure. public void removeUser(String userID) public void addUser(User user)
Transcribed Image Text:HashMap Project Documentation Driver program and menu Replicate the functionality demonstrated in the video lecture. User class implementation Successful implementation of the user class. Objects of this class adhere to the criteria demonstrated in the video demo. Criteria Users class implementation using hashmap Successful implementation of the users class. Use of the hashmap class as the underlying structure. public void removeUser(String userID) public void addUser(User user)
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