Java question: Write a method to retrieve Employee objects from a HashMap. The m
ID: 3680008 • Letter: J
Question
Java question:
Write a method to retrieve Employee objects from a HashMap.
The method takes in a HashMap that holds take in a HashMap that holds Employee objects hashed by their employee ID.
The method also takes in a list of Employee IDs.
Some IDs might be in the HashMap, others might not.
Create a list of all Employee objects that match the IDs from the list and are eligible for a bonus.
The Employee class is contained in the downloads for this homework.
The method header is:
public static ArrayList<Employee> getEmployeeBonusList(HashMap<String, Employee> employeeMap, ArrayList<String> employeeIDs)
Explanation / Answer
import java.util.*;
public class HomeworkW09Driver {
public static void main(String[] args) {
ArrayList<Employee> employeeList = new ArrayList<>();
fillEmployees(employeeList);
HashMap<String, Employee> employeeHash = getEmployeeHash(employeeList);
System.out.println("The hash should have 61 entries:" + employeeHash.size());
ArrayList<String> employeeIDList = new ArrayList<>(Arrays.asList(new String[] {"AZ14", "AD64", "AF67", "ARHC", "ALH1", "AC48", "AGB1", "AS1G", "BDC1", "BD31", "BMJ7", "DM78", "BT67", "BB53", "CN6S", "CB41", "CGG3", "ER39", "FW36", "F613", "HM01", "HW32", "JR63", "KT13", "KA74", "LK71", "LW13", "PTC8", "PR94", "PW17", "SC89", "TM44", "XP90", "ZP91", "XB44"}));
ArrayList<Employee> bonusList = getEmployeeBonusList(employeeHash, employeeIDList);
System.out.println("The list should have 16 entries: " + bonusList.size());
System.out.println(bonusList);
}
public static HashMap<String, Employee> getEmployeeHash(ArrayList<Employee> employeeList) {
return new HashMap<String, Employee>();
}
public static ArrayList<Employee> getEmployeeBonusList(HashMap<String, Employee> employeeMap, ArrayList<String> employeeIDs) {
return new ArrayList<Employee>();
}
public static void fillEmployees(ArrayList<Employee> empList) {
empList.add(new Employee("Adam", "Zapel", "AZ14", true));
empList.add(new Employee("Al", "Dente", "AD62", false));
empList.add(new Employee("Al", "Fresco", "AF67", true));
empList.add(new Employee("Al K. ", "Seltzer","ASG1", false));
empList.add(new Employee("Alf A.", "Romeo", "ARHC", true));
empList.add(new Employee("Amanda", "Lynn", "ALH1", false));
empList.add(new Employee("Anita", "Job", "AJ71", true));
empList.add(new Employee("Anna", "Conda", "AC4G", true));
empList.add(new Employee("Anna", "Graham", "AGB1", false));
empList.add(new Employee("Anna", "Prentice", "APL2", true));
empList.add(new Employee("Anna", "Sasin", "AS1G", true));
empList.add(new Employee("Anne", "Teak", "ATH9", false));
empList.add(new Employee("B.A.", "Ware", "BW90", true));
empList.add(new Employee("Barb", "Dwyer", "BDC1", true));
empList.add(new Employee("Barb E.", "Dahl", "BD31", false));
empList.add(new Employee("Barbara", "Seville", "BS20", true));
empList.add(new Employee("Barry", "Cade", "BCG5", true));
empList.add(new Employee("Bea", "Minor", "BMJ7", false));
empList.add(new Employee("Dee", "Major", "DM78", true));
empList.add(new Employee("Beau", "Tye", "BT65", true));
empList.add(new Employee("Bill", "Board", "BB53", false));
empList.add(new Employee("Cara", "Van", "CV62", true));
empList.add(new Employee("Chris P.", "Bacon", "CPA1", true));
empList.add(new Employee("Constance", "Noring", "CN6T", true));
empList.add(new Employee("Crystal", "Ball", "CB41", true));
empList.add(new Employee("Crystal", "Glass", "CGG4", false));
empList.add(new Employee("Earl Lee", "Riser", "ER39", true));
empList.add(new Employee("Easton", "West", "EW12", false));
empList.add(new Employee("Ferris", "Wheeler", "FW36", false));
empList.add(new Employee("Flint", "Sparks", "F613", true));
empList.add(new Employee("Franklin", "Stein", "FS13", true));
empList.add(new Employee("Gene", "Poole", "GP19", false));
empList.add(new Employee("Heidi", "Clare", "HC84", true));
empList.add(new Employee("Helen", "Back", "HBB5", true));
empList.add(new Employee("Helen", "Wiells", "HW03", true));
empList.add(new Employee("Holly", "McRell", "HM00", true));
empList.add(new Employee("Holly", "Wood", "HW32", true));
empList.add(new Employee("Jack", "Pott", "JP87", true));
empList.add(new Employee("Joe", "Kerr", "JK87", true));
empList.add(new Employee("Joy", "Rider", "JR64", true));
empList.add(new Employee("Justin", "Case", "JCT1", true));
empList.add(new Employee("Justin", "Time", "JT13", true));
empList.add(new Employee("Kandi", "Apple", "KA74", true));
empList.add(new Employee("Laura", "Norder", "LNB4", false));
empList.add(new Employee("Leigh", "King", "LK71", true));
empList.add(new Employee("Luke", "Warm", "LW13", true));
empList.add(new Employee("Marsha", "Mellow", "MM44", false));
empList.add(new Employee("Marshall", "Law", "MLQ3", true));
empList.add(new Employee("Marty", "Graw", "MG63", true));
empList.add(new Employee("Olive", "Branch", "OB63", false));
empList.add(new Employee("Paige", "Turner", "PTC8", true));
empList.add(new Employee("Pepe", "Roni", "PR94", true));
empList.add(new Employee("Price", "Wright", "PW17", true));
empList.add(new Employee("Rocky", "Beach", "RB12", true));
empList.add(new Employee("Sandy", "Beach", "SB12", true));
empList.add(new Employee("Sal A.", "Mander", "SM62", true));
empList.add(new Employee("Stanley", "Cupp", "SC89", false));
empList.add(new Employee("Tom", "Morrow", "TM43", true));
empList.add(new Employee("Warren", "Peace", "WP90", true));
empList.add(new Employee("Will", "Power", "WP91", false));
empList.add(new Employee("X.", "Benedict", "XB43", true));
}
}
Employee.java
public class Employee {
private String firstName, lastName, id;
private boolean bonus; // whether the Employee is eligible for a bonus
public Employee(String firstName, String lastName, String id, boolean bonus) {
this.firstName = firstName;
this.lastName = lastName;
this.id = id;
this.bonus = bonus;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public boolean isBonus() {
return bonus;
}
public void setBonus(boolean bonus) {
this.bonus = bonus;
}
@Override
public String toString() {
return "Employee: " + lastName + ", " + firstName + " (ID: " + id + ")" +
(bonus ? " (Eligible for Bonus)" : "");
}
}
sample output
The hash should have 61 entries:0
The list should have 16 entries: 0
[]
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