Code given:

Account.java

import java.io.Serializable;

public class Account implements Comparable, Serializable {

protected int accnum;

protected HolderDetails holder;

protected List transactions;

protected float balance;

public Account(int accnum, HolderDetails holder, List transactions, float balance) {

//super();

this.accnum = accnum;

this.holder = holder;

this.transactions = transactions;

this.balance = balance;

}

public int getAccnum() {

return accnum;

}

public HolderDetails getHolder() {

return holder;

}

public List getTransactions() {

return transactions;

}

public float getBalance() {

return balance;

}

public boolean withdrawal(float amount) {

if (amount > getBalance()) {

System.out.println("Account balance is low!!");

//return false;

}else {

float remainingBalance = getBalance() - amount;

this.balance = remainingBalance;

return true;

}

}

public void deposit(float amount) {

float balanceAfterDeposit = getBalance() + amount;

this.balance = balanceAfterDeposit;

}

public void printAccountDetails() {

System.out.println("Account No: " + getAccnum());

System.out.println("Balance: " + getBalance());

System.out.println("Holder Details: " + holder.toString());

System.out.println("Transaction details: ");

getTransactions().forEach(transaction -> System.out.println(transaction.toString()));

}

@Override

public int compareTo(Account arg0) {

return Integer.valueOf(this.getAccnum()).compareTo(Integer.valueOf(arg0.getAccnum()));

}

}

b: Provide implementations for the HolderDetails class and the Transaction class. The HolderDetails class is used to store personal details about the account holder. The Transaction class contains details about past transactions including MARKS c: Define and implement a new class, called CurrentAccount, derived from Account, that allows withdrawals to proceed up to some overdraft limit. Note that the base Account class shown has no overdraft facility 5 MARKS b: Provide implementations for the HolderDetails class and the Transaction class. The HolderDetails class is used to store personal details about the account holder. The Transaction class contains details about past transactions including MARKS c: Define and implement a new class, called CurrentAccount, derived from Account, that allows withdrawals to proceed up to some overdraft limit. Note that the base Account class shown has no overdraft facility 5 MARKS