va code 12. Given an existing ArrayList named contactList, find the number of contacts in the ArrayList and store it in the existing variable named numContacts.
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12. Given an existing ArrayList named contactList, find the number of contacts in the ArrayList and store it in the existing variable named numContacts.
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- Java code 8. Given an existing ArrayList named friendList, find the first index of a friend named Sasha and store it in a new variable named index.Create a Java program that will store 10 student objects in an ArrayList, ArrayList<Student>. A student object consists of the following fields: int rollno String name String addressA supermarket wants to reward its best customer of each day, showing the customer’s name on a screen in the supermarket. For that purpose, the store keeps an ArrayList.Create a class customer having id, name, gender, and bill provide appropriate getters/setters and constructors also provide toString method.In the Store class, make an ArrayList of customers, store name, and address implement methods public void addSale(Customer c) that will add customers to the arraylist.public void RemoveCustomer(int id);public void UpdateCustomerRecord(int Id);public displayAll();public String nameOfBestCustomer() to record the sale and return the name of the customer with the largest sale. public ArrayList nameOfBestCustomers(int topN) so that it displays the top customers, that is, the topN customers with the largest sales, where topN is a value that the user of the program supplies. Write a program that prompts following menu and ============================================…
- This is needed in Java Given an existing ArrayList named friendList, find the first index of a friend named Sasha and store it in a new variable named index.Write a Java class Course for dealing with courses. Your class must have the following features: Course - name: String - lineNumber: int - symbol: String - sections: ArrayList + Course() + Course(name: String, lineNumber: int, symbol: String) + getName(): String + getLineNumber(): int + getSymbol(): String + getSections(): ArrayList + addSection(section: Section): void + Override toString() method: you have to return needed data Fields values. addSection(section: Section) method add a section (number and the teacher for this section) to the array list of sections. Note: sectionNumber will be generated automatically. Write a Java class Section for dealing. Your class must have the following features: Section - number: int - teacher: Teacher - students: ArrayList + Section() + Section(number: int, techer: Teacher) + getNumber(): int + getTeacher(): Teacher + getStudents(): ArrayList + addStudent(student: Student): void + Override toString() method: you have to return needed data…In java A supermarket wants to reward its best customer of each day, showing the customer’s name on a screen in the supermarket. For that purpose, the store keeps an ArrayList.Create a class customer having id, name, gender, and bill provide appropriate getters/setters and constructors also provide toString method.In the Store class, make an ArrayList of customers, store name, and address implement methods public void addSale(Customer c) that will add customers to the arraylist.public void RemoveCustomer(int id);public void UpdateCustomerRecord(int Id);public displayAll();public String nameOfBestCustomer() to record the sale and return the name of the customer with the largest sale. public ArrayList nameOfBestCustomers(int topN) so that it displays the top customers, that is, the topN customers with the largest sales, where topN is a value that the user of the program supplies. Write a program that prompts following menu and ============================================…
- Write the definition of the class linkedQueueType, which is derived from the class unorderedLinkedList, as explained in this chapter. Also, write a program to test various operations of this class. exercice317 from malik book (eTextbook: C++ Programming: Program Design Including Data Structures)using java, finish the two arrayList methods below: public int indexOf(Object o) { } public E remove(int index) { } and then create a class to test the ArrayList methodsWrite assignments to the library, cs101, and track variables (which you defined in the previous three exercises) to create the appropriate ArrayList objects. Write them once using diamond notation and once without diamond notation, specifying the full type.
- in java language Write a program in which you create an object of type ArrayList named BZ and then add 3 elements in this object and then copy the elements of the object in another object QZ and then cancel the elements of the object BZ and then write the necessary print statements to show it?This is needed in Java Given that an ArrayList of Strings named nameList has already been created and names have already been inserted, write the statement necessary to delete the name at index 15.For the supplied code, produce a sales report that shows customers, products, prices, total price and average price. package arraylist_3;import java.util.ArrayList;import javax.swing.JOptionPane; public class Arraylist_3 { private static ArrayList<String> customers = new ArrayList<>();private static ArrayList<String> products = new ArrayList<>();private static ArrayList<Double> prices = new ArrayList<>();private static int x = 0;public static void main(String[] args) {x = Integer.parseInt(JOptionPane.showInputDialog(null,"Enter the number of Customers"));input_customer();display_sales_report();}private static void input_customer(){for(int y = 0;y < x; y++){customers.add(JOptionPane.showInputDialog(null,"Please enter in the customer" + (y+1)));products.add(JOptionPane.showInputDialog(null,"Please enter the Product for :"+ customers.get(y)));prices.add(Double.parseDouble(JOptionPane.showInputDialog(null,"Please enter the Price :"+…