class BankAccount {

private int balance;

public BankAccount(int initialBalance) {

this.balance = initialBalance;

}

public synchronized void deposit(int amount, String threadName) {

balance += amount;

System.out.println(threadName + " deposited " + amount + ". Current balance: " + balance);

}

public synchronized void withdraw(int amount, String threadName) {

while (balance < amount) {

System.out.println(threadName + " is waiting to withdraw " + amount + ". Current balance: " + balance);

}

balance -= amount;

System.out.println(threadName + " withdrew " + amount + ". Current balance: " + balance);

}

public int getBalance() {

return balance;

}

}

class BankTransaction implements Runnable {

private final BankAccount account;

private final boolean deposit;

private final int amount;

private final String threadName;

public BankTransaction(BankAccount account, boolean deposit, int amount, String threadName) {

this.account = account;

this.deposit = deposit;

this.amount = amount;

this.threadName = threadName;

}

@Override

public void run() {

if (deposit) {

account.deposit(amount, threadName);

} else {

account.withdraw(amount, threadName);

}

}

}

public class Bank {

public static void main(String[] args) {

BankAccount account = new BankAccount(100); // Initial balance of 100

Thread[] transactions = new Thread[6];

transactions[0] = new Thread(new BankTransaction(account, false, 50, "Transaction 1")); // Withdraw 50

transactions[1] = new Thread(new BankTransaction(account, true, 100, "Transaction 2")); // Deposit 100

transactions[2] = new Thread(new BankTransaction(account, false, 150, "Transaction 3")); // Withdraw 150

transactions[3] = new Thread(new BankTransaction(account, true, 50, "Transaction 4")); // Deposit 50

transactions[4] = new Thread(new BankTransaction(account, false, 100, "Transaction 5")); // Withdraw 100

transactions[5] = new Thread(new BankTransaction(account, true, 200, "Transaction 6")); // Deposit 200

for (Thread transaction : transactions) {

transaction.start();

}

}

}