Homework Help is Here – Start Your Trial Now!
Engineering
Computer Science
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(); } }

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
See similar textbooks
icon
Related questions
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)
Expert Solution
steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Hash Table
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
SEE MORE TEXTBOOKS