java linked list 3. Create a class called CitizenRegister with the following attributes/variables: a. Node headNode b. int totalRegisteredCitizens 4. Add and complete the following methods in CitizenRegister: a. head() i. Returns the first citizen object in the linked list b. tail()
java linked list
3. Create a class called CitizenRegister with the following attributes/variables:
a. Node headNode
b. int totalRegisteredCitizens
4. Add and complete the following methods in CitizenRegister:
a. head()
i. Returns the first citizen object in the linked list
b. tail()
i. Returns the last citizen object in the linked list
c. size()
i. Returns the totalRegisteredCitizen
d. isEmpty()
i. Returns the boolean of whether the linked list is empty or not
e. addCitizenAtHead(Node newNode)
i. Adds a new node object containing the citizen object information
before the headNode
f. addCitizenAtTail(Node newNode)
i. Adds a new node object containing the citizen object information at
the end of the linked list
g. addCitizenBefore(String citizenID, Node newNode)
i. Adds a new node object containing the citizen object information
before the node with the matching citizenID
ii. If such citizen object isn’t found display “Citizen has not registered for
vaccine” and add the new node at the end of the linked list
h. addCitizenAfter(String citizenID, Node newNode)
i. Adds a new node object containing the citizen object information
after the node with the matching citizenID
ii. If such citizen object isn’t found display “Citizen has not registered for
vaccine” and add the new node at the end of the linked list
i. removeCitizen(String citizenID)
i. Deletes the node object containing the citizen object with the
matching citizenID
ii. If such citizen object isn’t found display “Citizen has not registered for
vaccine”
j. removeLastCitizen()
i. Deletes the last node object containing the citizen object at the end
of the linked list
k. removeFirstCitizen()
i. Deletes the first node object containing the citizen object in the linked
list
l. displayAllCitizens()
using the code template below
public class CitizenRegister {
//Create your list of attributes/variables here
//Your default constructors goes here
public CitizenRegister(){
}
//Your accessors and mutators goes here
/*
EXAMPLE: Pls delete
*************
public int getSomething(){
return idk;
}
public void setSomething(String newWord){
oldWord = newWord;
}
**************
*/
//Your Question 4 methods are here:
//4a
public Citizen head(){
}
//4b
public Citizen tail(){
}
//4c
public int size(){
}
//4d
public void addCitizenAtHead(Node newNode){
}
//4e
public void addCitizenAtTail(Node newNode){
}
//4f
public void addCitizenBefore(String citizenID, Node newNode) {
}
//4g
public void addCitizenAfter(String citizenID, Node newNode) {
}
//4h
public void removeCitizen(String citizenID){
}
//4i
public void removeLastCitizen(){
}
//4j
public void removeFirstCitizen(){
}
//4k
public void displayAllCitizens(){
}
//Your main method goes here to test for class implementation
public static void main(String[] args){
System.out.println("Hello Students");
}
}
the display should look like this
Print the name and surname of all the citizens in the linked list in
neatly formatted output:
citizenNumber: 007
citizenName citizenSurname :James Bond
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