Question is that the program given below read it carefully and then tell what is the purpose of program and how it work....

import java.util.ArrayList; import java.util.Scanner; public class Bankingsystem { static ArrayList allClients; static ArrayListallAccounts; static Scanner input: static void showAllAccounts(/ for(int i=0;i BankAccount newAccount =null; System.out.println("enter account balance"); double balance - input.nextDouble(); if(accType=1) newAccount = new BankAccount balance); Jelse if(accType==2 newAccount = new Savings BankAccount balance): = newAccount.setOwner(newClient); newClient.setAccountinewAccount); allAccounts.add(newAccount: allClients.add(newClient); System.out.println("account created successfully"); } public static void main(String[] args) { allAccounts = new ArrayList(); all Clients = new ArrayList(); input = new Scanner(System.in); addTestData(); while(true) { System.out.println("1- ADD ACCOUNT"); System.out.println("2- LIST OF ALL ACCOUNT"); System.out.println("3- SEARCH FOR ACCOUNT"); System.out.println("4- REMOVE AN ACCOUNT"); System.out.println("5-WITHDRAW"); System.out.println("6- DEPOSIT"); System.out.println("7-EXIT"); int option=input.nextInt(); if (option == 1) { addAccount); } else if (option == 2) { showAllAccounts(): } else if (option == 3) { searchFor Account(); } else if (option==4) { removeAccount(); } else if (option ==5) { withdraw(); } else if (option == 6) { deposit(); } else if (option == 7) { break; } } static void addTestData() for(int i=0;i balance--amountOfMoney: return true; public boolean deposit/double amountOfMoney if(amountOf Moneyc=0 System.err.println("invalid amount"); return false; } balance+ amount of money, return true; } public Client getowner() { return owner; } public void setOwner(Client owner) { this.owner = owner, } public void view System.out.println("account id : "+accountid); System.out.println("balance : "+balance): owner.view: } } public class Client { String name, String address: String phone Bank Account account: public Client(String name, String address, String phone) { this.name = name; this.address = address: this.phone = phone; } public String getName() { return name: } public void setName(String name) { this.name = name; } public String getAddress() { return address: } public void setAddress(String address) { this.address = address; } public String getPhonel) { return phone; } public void setPhone(String phone) { this.phone = phone; } public BankAccount getAccount() { return account: } public void setAccount (BankAccount account) { this account = account: } public void View System.out.println("name : "+name); System.out.println("address : "+address); System.out.println("phone : "+phone); // account.view(); } } public class SavingsBankAccount extends BankAccount private double minimumBalance; public Savings BankAccount() { super(1000); minimum Balance = 1000, } public SavingsBankAccount(double balance) super(balance); minimumBalance=1000; } public double getMinimumBalancel) { return minimumBalance; } public void set MinimumBalance[double minimumBalance) { this.minimumBalance = minimumBalance; } @Override public boolean withdraw(double amountOf Money) { if(balance-amountOfMoney>=minimumBalance}{ balance-amountOfMoney: return true; } System.err.println("invalid amount"); return false; } @Override public boolean deposit/double amountOf Money) {