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package BankAccountTesterTrial2;
public class BankAccountTester {/* * Creates and runs threads for depositing and withdrawing to and from * a bank account. * @param args unused */
public static void main(String [] args){
BankAccount account = new BankAccount();for ( int i = 0; i < 5; ++i){
DepositAgent r0 = new DepositAgent(account,100);Thread t0 = new Thread(r0);WithdrawAgent r1 = new WithdrawAgent(account,200);Thread t1 = new Thread(r1);t0.start();t1.start();
}
System.out.println("Final balance: " + account.getBalance());}
}
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package BankAccountTesterTrial2;
public class BankAccount {
// A bank account has a balance that can be changed// by deposits and withdrawals
private double balance;
/* * Constructs a bank account with a zero balance */
public BankAccount(){
balance = 0;}/* * Deposits money into the bank account. @param amount * the amount to deposit */public synchronized void deposit(double amount){
System.out.println("Depositing " + amount);balance = balance + amount;System.out.println("new balance is " + balance);notifyAll();
}/* * Withdraws money from the bank account. @param amount the
amount to * withdraw */public synchronized void withdraw(double amount){
try{while ( balance < amount ){
System.out.println("Withdraw " + amount + " was blocked");
wait();}System.out.println("Withdrawing " + amount);balance = balance - amount;System.out.println("new balance is " + balance);}catch ( Exception e){
System.out.println("Exception Caught");}
}
/* * Gets the current balance of the bank account. @return the
current balance */
public double getBalance(){
return balance;}
}
package BankAccountTesterTrial2;
public class DepositAgent extends Thread {/* * A BankAccount is created and the deposit * function is run to try and deposit the * amount specified */
BankAccount caccount;
int amount = 0;
public DepositAgent( BankAccount account, int funds){
/* * Constructor for DepositAgent * @param BankAccount, funds(amount to deposit) */caccount = account;amount = funds;
}
public void run(){
/* * Runs the thread */
caccount.deposit(amount);}
}
package BankAccountTesterTrial2;
public class WithdrawAgent extends Thread {/* * Creates a BankAccount and runs the * WithdrawAgent to try and withdraw the amount * of funds specified * */
BankAccount caccount;int amount = 0;
public WithdrawAgent (BankAccount account, int funds){
/* * Constructor for the WithdrawAgent * @param account, funds */caccount = account;amount = funds;
}public void run (){
/* * Runs the thread */caccount.withdraw(amount);
}}
