Java) Create a new project folder in Eclipse for this activity. In this folder, create two new classes - Account.java and Savings.java and put your name in a Javadoc comment at the top. Make the Account class an abstract class by adding the abstract keyword before the class keyword Inside the Account class, add the following variables and methods: A private variable called name (String) A private variable called balance (double) A two-argument constructor which takes in String and double parameters A no argument constructor, which calls the two-argument constructor, passing in "name unknown" and 0.0 as arguments. Getter and setter methods for the two variables An abstract method called updateBalance A toString() method Make the Savings class final by adding the final keyword before the class keyword - now this class cannot be extended (no inheritance from this class). Also make Savings a subclass of Account Inside the Savings class, add the following variables and methods: A private variable called interestRate (double) A three-argument constructor which takes in a String and two double parameters, and calls the two argument constructor of the Account class A no argument constructor, which calls the three-argument constructor of Savings, passing in "name unknown", 0.0, and 0.0 as arguments. Getter and setter methods for the interestRate variable A method called updateBalance that overrides the abstract method of the super class Note that it is required to override this method or your class will have an error This method is void and has no parameters It multiplies balance by 1 + interestRate and assigns the result to balance A toString() method that overrides toString from the superclass. Add a final class to your project folder called SavingsTest.java. Copy and paste the below code into this class. /**  * SavingsTest.java  * @author  * CIS 36B, Activity 13.1  */ import java.util.Scanner; public class SavingsTest {     public static void main(String args[]) {         Scanner input = new Scanner(System.in);         System.out.println("Welcome!\n");         System.out.print("Enter your name: ");         String name = input.nextLine();         System.out.print("Enter the balance to invest: $");         double balance = input.nextDouble();         System.out.print("Enter the interest rate on your target account: ");         double interest = input.nextDouble();                 Savings savings = new Savings(name, balance, interest);         System.out.println("\nHere is your account summary: \n" + savings);                 savings.updateBalance();                 System.out.printf("In one year, your balance"                 + " will be: $%.2f", savings.getBalance());                 input.close();             } } When your program works as shown in the sample output, upload Account.java and Savings.java to Canvas. Sample Output: Welcome! Enter your name: Grace Kang Enter the balance to invest: $50000 Enter the interest rate on your target account: .025 Here is your account summary: Name: Grace Kang Balance: $50000.0 Interest Rate: 0.025 In one year, your balance will be: $51250.00

Please help me with the question using Java. Please use compliment to explain each line of code.

Can you give me the solution in java

1) Write a class on BlueJ, which must be called BookClub. The class must have exactly three fields: two integer fields called capacity and occupancy and one String field called name. The capacity field will store the maximum number of shoppers allowed and occupancy will store the current number of shoppers.  (There must be no additional fields defined in the class, even if you think more are required. Consider using local variables inside methods if you think you need extra fields.) 2) The initial values of the book club name, and capacity must be received as parameters to the class's constructor, while the occupancy must always be set to zero when a BookClub object is created. 3) The class must define getter methods for all of the fields. These must be called getName, getCapacity and getOccupancy. You must not call them anything different. You must not write setter methods for the fields. The class must define a method called addOne that takes no parameters. If the current number of…

please do both parts  1)Create two Java classes, Desktop and Laptop that both are subclasses of Computer.a) A Desktop has additional instance variables: width and height (data encapsulation isexpected)b) A Laptop has an additional instance variable, weight (data encapsulation is expected).c) Write constructors for both classes that require input for all their instance variables(including Manufacturing Date, Disk size, Number of cores and Color) and no-argsconstructors.d) Create getters and setters for all instance variables for both Child classes.e) Create toString() methods in Desktop and Laptop.   2) Test Two Child ClassesTest your newly created subclasses inside the same TestComputer program you previouslycreated: create two new Laptops and two new Desktops with the data of your choice. UsetoString() method to show all data fields (including the data fields in the super class and sub class).

a) How do you declare an object’s reference variable? What does it store?  b) When will a class have a default constructor? How do you create a default constructor in Eclipse?