Java Reference
In-Depth Information
public class Bank {
// Perform a transaction
public void doTransaction(Transaction transaction) {
synchronized(transaction.getAccount()) {
int balance = 0;
switch(transaction.getTransactionType()) {
case CREDIT:
System.out.println("Start credit of " +
transaction.getAccount() + " amount: " +
transaction.getAmount());
// Get current balance
balance = transaction.getAccount().getBalance();
// Credits require a lot of checks...
try {
Thread.sleep(100);
} catch(InterruptedException e) {
System.out.println(e);
}
balance += transaction.getAmount();
// Increment
the balance
transaction.getAccount().setBalance(balance);// Restore
A/C balance
System.out.println(" End credit of " +
transaction.getAccount() + " amount: " +
transaction.getAmount());
break;
case DEBIT:
System.out.println("Start debit of " +
transaction.getAccount() + " amount: " +
transaction.getAmount());
// Get current balance
balance = transaction.getAccount().getBalance();
// Debits require even more checks...
try {
Thread.sleep(150);
} catch(InterruptedException e) {
System.out.println(e);
}
balance -= transaction.getAmount();
// Decrement
the balance...
transaction.getAccount().setBalance(balance);// Restore
A/C balance
