Copy /**
*Solution for Ans. 9
* @author Jatin Kamboj 8647
*/
import java.util.ArrayList;
import java.util.Scanner;
public class java_4 {
static class Account {
private int acc;
private int balance;
private final String name;
private final ArrayList<Account> accounts;
{
accounts = new ArrayList<>();
}
Account(int x) {
acc = x;
balance = 0;
name = "Test";
accounts.add(new Account("Default" +
" Account Name 1", acc));
acc++;
accounts.add(new Account("Default" +
" Account Name 2", acc));
acc++;
}
Account(String name, int acc) {
this.acc = acc;
balance = 0;
this.name = name;
}
public void createExist() {
int ch;
do {
existingAccountsMenu();
Scanner sc = new Scanner(System.in);
ch = sc.nextInt();
switch (ch) {
case 1:
this.getBal();
break;
case 2:
this.withdrawal();
break;
case 3:
this.deposit();
break;
case 4:
menu();
default:
System.out.println("\n\t XXXXX--" +
" INVALID INPUT --XXXXX \n");
}
} while (ch != 9);
}
public void menu() {
int ch;
do {
bankOperationsMenu();
Scanner sc = new Scanner(System.in);
ch = sc.nextInt();
switch (ch) {
case 1:
this.createAccount();
break;
case 2:
this.showBankBal();
break;
case 3:
this.maxMin();
break;
case 4:
this.checkBal();
break;
case 5:
this.checkAccount();
break;
case 6:
this.createExist();
break;
case 7:
this.showAllAccountDetails();
case 8:
System.exit(0);
default:
System.out.println("\n\t XXXXX--" +
" INVALID INPUT --XXXXX \n");
}
} while (ch != 9);
}
private void showAllAccountDetails() {
int count = 0;
for (Account account : accounts) {
count++;
System.out.print(count + ". ");
showAccountDetails(account);
System.out.println("----------------" +
"--------------");
}
}
public void getBal() {
System.out.println("Enter Account Number: ");
Scanner inp = new Scanner(System.in);
int ac = inp.nextInt();
int f = 1;
for (Account account : accounts) {
if (ac == account.acc) {
f = 0;
displayMaxOrMinAccountDetails(
account.balance,
account.acc,
account.name,
"Account Holder Name: ",
"\nAccount Number: ",
"\nAccount Balance => ₹");
break;
}
}
if (f == 1) System.out.println("\nAccount " +
"Does Not" +
" Exists");
}
public void withdrawal() {
System.out.println("Enter Account Number: ");
Scanner inp = new Scanner(System.in);
int ac = inp.nextInt();
int f = 1;
for (Account account : accounts) {
if (ac == account.acc) {
f = 0;
showAccountDetails(account);
System.out.println("\nConfirm " +
"Account's details" +
" and proceed ahead " +
"\nEnter withdrawal " +
"amount (₹): ");
int withdraw = inp.nextInt();
if (withdraw > account.balance) {
System.out.println("Insufficient " +
"Balance To" +
" Withdraw");
} else if (withdraw <= 0) {
System.out.println("Invalid " +
"withdrawal amount");
} else {
account.balance -= withdraw;
System.out.println("Account's " +
"Updated Balance " +
"is: ₹" + account.balance);
}
break;
}
}
if (f == 1) {
System.out.println("\nAccount Does " +
"Not Exists");
}
}
private void showAccountDetails(Account account) {
System.out.println("Account Holder Name: " +
account.name +
"\nAccount Number: " +
account.acc +
"\nAccount Balance => ₹" +
account.balance);
}
public void deposit() {
System.out.println("Enter Account Number: ");
Scanner inp = new Scanner(System.in);
int ac = inp.nextInt();
int f = 1;
for (Account account : accounts) {
if (ac == account.acc) {
f = 0;
showAccountDetails(account);
System.out.println("\nConfirm " +
"Account's details and" +
" proceed ahead \nEnter " +
"deposit amount (₹): ");
int deposit = inp.nextInt();
if (deposit <= 0) {
System.out.println("Invalid " +
"deposit amount");
} else if (deposit > 10000) {
int a = tax_red(deposit);
account.balance += a;
System.out.println("\nAs the amount" +
" exceeded the" +
" minimum tax slab " +
"of ₹10,000\n" +
"Tax deduction of 2% on " +
"deposit value of ₹" +
deposit +
" amounts to ₹" +
(deposit - a) +
"\nWe deposited ₹" +
a +
" amount in the account." +
"\nAccount's Updated " +
"Balance is: ₹" +
account.balance);
} else {
account.balance += deposit;
System.out.println("Account's " +
"Updated Balance is:" +
" ₹" + account.balance);
}
break;
}
}
if (f == 1) {
System.out.println("\nAccount Does Not Exists");
}
}
public int tax_red(int d) {
//this.bal+=x;
return (int) (d - (.02 * d));
}
void createAccount() {
System.out.println("Enter Account Holder's name: ");
Scanner sc = new Scanner(System.in);
String name = sc.nextLine();
this.acc++;
accounts.add(new Account(name, this.acc));
System.out.println("Welcome " + name + "\n"
+ name + "'s " +
"Bank Account is successfully created" +
" with account " +
"no. => " + this.acc);
}
private void showBankBal() {
int total = 0;
for (Account account : accounts) {
//System.out.println(accounts.get(i).bal);
total += account.balance;
}
System.out.println("Total Amount in Bank: ₹"
+ total);
}
private void maxMin() {
int minValue = accounts.get(0).balance;
int minValueAcc = accounts.get(0).acc;
String minValueHolderName = accounts.get(0).name;
for (int i = 1; i < accounts.size(); i++) {
if (accounts.get(i).balance < minValue) {
minValue = accounts.get(i).balance;
minValueAcc = accounts.get(i).acc;
minValueHolderName = accounts.get(i).name;
}
}
int maxValue = accounts.get(0).balance;
int maxValueAcc = accounts.get(0).acc;
String maxValueHolderName = accounts.get(0).name;
for (int i = 1; i < accounts.size(); i++) {
if (accounts.get(i).balance > maxValue) {
maxValue = accounts.get(i).balance;
maxValueAcc = accounts.get(i).acc;
maxValueHolderName = accounts.get(i).name;
}
}
displayMaxOrMinAccountDetails(minValue,
minValueAcc,
minValueHolderName,
"Minimum Balance Holder's account" +
" number is: ",
" having Account no.: ", " " +
"with amount: ₹");
displayMaxOrMinAccountDetails(maxValue,
maxValueAcc, maxValueHolderName,
"Maximum Balance Holder's account number "
+ "is: ",
" having Account no.: ", " with amount: ₹");
}
private void checkBal() {
System.out.println("Enter the amount to be" +
" checked (₹): ");
Scanner sc = new Scanner(System.in);
int b = sc.nextInt();
int count = 0;
for (int i = 1; i < accounts.size(); i++) {
if (accounts.get(i).balance >= b) {
count++;
}
}
System.out.println("Total accounts with " +
"balance greater" +
" than or equal to ₹" + b + " are: " +
count);
}
private void checkAccount() {
System.out.println("Enter Your Account " +
"Number: ");
Scanner inp = new Scanner(System.in);
int ac = inp.nextInt();
int f = 1;
for (Account account : accounts) {
if (ac == account.acc) {
f = 0;
displayMaxOrMinAccountDetails(
account.balance,
account.acc, account.name,
"Account Holder Name: ",
"\nAccount Number: ",
"\nAccount Balance => ₹");
break;
}
}
if (f == 1) {
System.out.println("\nAccount Does Not " +
"Exists");
}
}
}
private static void bankOperationsMenu() {
System.out.println("\n--- Menu ---");
System.out.println("1. Create New Account");
System.out.println("2. Show Bank's Total Assets Value"
+ " (₹)");
System.out.println("3. Show Maximum and Minimum " +
"Account Balance Holders");
System.out.println("4. Number of Accounts Above" +
" Threshold Balance (₹)");
System.out.println("5. Check for a Given Account" +
" Number");
System.out.println("6. Operate on Existing Accounts");
System.out.println("7. Show all Accounts");
System.out.println("8. Exit");
System.out.println("Enter Your Choice: ");
}
private static void existingAccountsMenu() {
System.out.println("\n--- Menu ---");
System.out.println("1. Get Balance (₹)");
System.out.println("2. Withdraw from Bank");
System.out.println("3. Deposit in Account (taxable" +
" for amount > ₹10,000)");
System.out.println("4. Go to Bank menu");
System.out.println("Enter your choice: ");
}
private static void displayMaxOrMinAccountDetails(
int minValue, int minValueAcc,
String minValueHolderName,
String s, String s2, String s3) {
System.out.println(s
+ minValueHolderName
+ s2
+ minValueAcc
+ s3
+ minValue);
}
public static void main(String[] args) {
int ch;
Account bk = new Account(2000);
Scanner sc = new Scanner(System.in);
mainMenu();
ch = sc.nextInt();
if (ch == 1) {
bk.createExist();
} else {
bk.menu();
}
}
private static void mainMenu() {
System.out.println("\n\t|-- Welcome to MJK Bank --|" +
" \nPlease choose below from the available" +
" services: \n");
System.out.println("1. Operate on Existing Individual" +
" Accounts (Default account numbers created" +
" already: 2000, 2001)");
System.out.println("2. Go to Bank Operations");
System.out.println("Enter your choice: ");
}
} 
