I need help with completing my Java programming project. I will be using the software Eclipse for this project so if you could also guide me through the project like labeling what is supposed to be in whatever "4 java files" or what section is what so I'm not trying to guess around, that would be great. Thank you Design a SuperClass named Person with fields for holding a person's name, address, and phonenumber. Write one or more constructors and the appropriate mutator and accessor methods for theclass's fields.Next, design a SubClass which inherit from the Person class. The Customer class should have a fieldfor a customer number and boolean field indicating whether the customer wishes to be on a mailinglist. Write one or more constructors and the appropriate mutator and accessor functions for theclasses' fields.Third, design a SubClass which inherits from the Customer class. The PreferredCustomer classshould have fields for the amount of the customer's purchases and the customers' discount level.Write one or more constructors and the appropriate mutator and accessor functions for the classes'fields.The amount of customer's discount is determined y the amount of the customer's cumulativepurchases in the store:• When a customer spends $500, they are given a 5% discount on future purchases• When a customer spends $1,000, they are given a 6% discount on future purchases• When a customer spends $1,500, they are given a 7% discount on future purchases• When a customer spends $2,000 or more, they are given a 10% discount on future purchasesDemonstrate an object of the Customer and PreferredCustomer in a simple program. Export yourproject folder which will contain 4 .java files and uploaded the zip folder here.

Solution: Programming language used: Java Note: This solution contains 4 files - Person.java : This file contains Person class code. Customer.java: This file contains Customer class code. PreferredCustomer.java: This file contains PreferredCustomer class code MainClass.java: This file contains main method and program code to implement above classes. All 4 files are stored in same location in computer. All solution steps are included as comments in program code How to done on Eclipse: Create new project on Eclipse. Create new Java class file for each file name and paste code in that file Run this program through mainclass file. 4 java program files are these files: Person.java, Customer.java, PreferredCustomer.java, MainClass.java Program code of all files- Person.java // program starts from here // create class Person class Person { // declare class attributs // these attributes store person details private String name, address, phone_number; // define class constructors Person(){};// default constructor Person(String name, String address, String phone){ this.name = name; this.address = address; this.phone_number = phone; } // define all mutator and accessor methods void setName(String name){ this.name = name; } void setAddress(String address){ this.address = address; } void setPhoneNumber(String phone){ this.phone_number = phone; } String getName(){ return this.name; } String getAddress(){ return this.address; } String getPhoneNumber(){ return this.phone_number; } // define toString method to print object public String toString(){ return "\nCustomer Name: "+this.getName()+"\nCustomer Address: "+this.getAddress()+"\nCustomer Phone Number: "+this.getPhoneNumber(); } } // program ends here Customer.java: // program starts from here // create Customer class inherited from Person class class Customer extends Person{ private int customer_number; private boolean mailing_list; // this attribute store customer wishes to be on maiiling list // define class Construcotr Customer(){ super(); // default constructor } Customer(String name, String address, String phone, int cnum, boolean mailing ){ super(name, address, phone); this.customer_number = cnum; this.mailing_list = mailing; } // define all mutator and accessor methods void setCustomerNumber(int num){ this.customer_number = num; } void setMailingList(boolean wish){ this.mailing_list = wish; } int getCustomerNumber(){ return this.customer_number; } boolean getMailingList(){ return this.mailing_list; } // define toString method to print object public String toString(){ return super.toString()+"\nCustomer Number: "+this.getCustomerNumber()+"\nWishes to be on mailing list: "+this.getMailingList(); } } // program ends here PreferredCustomer.java // program starts from here // create class PreferredCustomer inherited from Customer class class PreferredCustomer extends Customer{ private double purchases_amount; // customers total purchases amount private double discount_level; // customer discount level for future purchases // define class Constructors PreferredCustomer(){ super(); // default consturcotr } // parameterised constructor PreferredCustomer(String name, String address, String phone, int cnum, boolean mailing, double purchase){ // pass some values to superclass constructor super(name, address, phone, cnum, mailing); // assing some value to this class attributes this.purchases_amount = purchase; } // define all mutator and accessor methods void setPurchasesAmount(double amount){ this.purchases_amount = amount; } double getPurchasesAmount(){ return this.purchases_amount; } double getDiscountLevel(){ // calculate customer's discount level according purchases amount if(this.getPurchasesAmount()>=2000) this.discount_level = 0.10; else if(this.getPurchasesAmount()>=1500) this.discount_level = 0.07; else if(this.getPurchasesAmount()>=1000) this.discount_level = 0.06; else if(this.getPurchasesAmount()>=500) this.discount_level = 0.05; else this.discount_level = 0; // return discount level return this.discount_level; } // define toString method to print object details public String toString(){ return super.toString()+"\nPurchases Amount: $"+this.getPurchasesAmount()+"\nDiscount Level for futre purchases: "+(this.getDiscountLevel()*100)+"%"; } } // program ends here MainClass.java // program starts from here // create main class to implements above classes public class MainClass { public static void main(String[] args) { // create an object of Customer class Customer cust = new Customer(); // set customer details by calling mutator methods cust.setName("Mark Den"); cust.setAddress("President Street, Washington"); cust.setPhoneNumber("033-4834833"); cust.setCustomerNumber(1934); cust.setMailingList(true); // print object System.out.println("\nCustomer details: "+cust); // create an object of PreferredCustomer class PreferredCustomer pcust = new PreferredCustomer(); //set details using mutator methods pcust.setName("Julia Biden"); pcust.setAddress("Main Lane, Washington"); pcust.setPhoneNumber("033-55534833"); pcust.setCustomerNumber(1744); pcust.setMailingList(false); pcust.setPurchasesAmount(1700); // print object System.out.println("\nPreferred Customer details: "+pcust); } } // program ends here Snapshots of program code: Person.java Customer.java: PreferredCustomer.java MainClass.java Snapshot of output: