[Ch15b] Updating Ryan and Monica statement code inline with the final Ryan and... (cbb4dedb) · Commits · examples / Head First Java 3rd Edition

src/main/java/ch15/ryanmonica/RyanAndMonicaStatementTest.java

+26 −22

Changes for src/main/java/ch15/ryanmonica/RyanAndMonicaStatementTest.java: 26 added lines, 22 removed lines.
Original line number	Diff line number	Diff line
		@@ -9,8 +9,8 @@ import java.util.concurrent.TimeUnit;
		public class RyanAndMonicaStatementTest {
		public static void main(String[] args) throws InterruptedException {
		BankAccountStatement account = new BankAccountStatement();
		RyanAndMonicaStatementJob ryan = new RyanAndMonicaStatementJob("Ryan", account);
		RyanAndMonicaStatementJob monica = new RyanAndMonicaStatementJob("Monica", account);
		RyanAndMonicaStatementJob ryan = new RyanAndMonicaStatementJob("Ryan", account, 50);
		RyanAndMonicaStatementJob monica = new RyanAndMonicaStatementJob("Monica", account, 100);
		ExecutorService executor = Executors.newFixedThreadPool(4);
		executor.execute(ryan);
		executor.execute(monica);
		@@ -24,18 +24,25 @@ public class RyanAndMonicaStatementTest {
		class RyanAndMonicaStatementJob implements Runnable {
		private final String name;
		private final BankAccountStatement account;
		private final int amountToSpend;

		RyanAndMonicaStatementJob(String name, BankAccountStatement account) {
		RyanAndMonicaStatementJob(String name, BankAccountStatement account, int amountToSpend) {
		this.name = name;
		this.account = account;
		this.amountToSpend = amountToSpend;
		}

		public void run() {
		for (int i = 0; i < 10; i++) {
		account.makeWithdrawal(10, name);
		if (account.getBalance() < 0) {
		System.out.println("Overdrawn!");
		goShopping(amountToSpend);
		}

		private void goShopping(int amount) {
		if (account.getBalance() >= amount) {
		System.out.println(name + " is about to spend");
		account.spend(amount, name);
		System.out.println(name + " finishes spending");
		} else {
		System.out.println("Sorry, not enough for " + name);
		}
		}
		}
		@@ -56,10 +63,10 @@ class Accountant implements Runnable {
		}

		class BankAccountStatement {
		private final List<Withdrawal> statement = new CopyOnWriteArrayList<>();
		private final List<Transaction> statement = new CopyOnWriteArrayList<>();

		public BankAccountStatement() {
		statement.add(new Withdrawal("Initial Balance", 0, 100));
		statement.add(new Transaction("Initial Balance", 0, 100));
		}

		public int getBalance() {
		@@ -67,33 +74,30 @@ class BankAccountStatement {
		return statement.get(lastEntry).getCurrentBalance();
		}

		public void makeWithdrawal(int amount, String name) {
		if (getBalance() >= amount) {
		System.out.println(name + " is about to withdraw");
		withdraw(name, amount);
		System.out.println(name + " completes the withdrawal");
		} else {
		System.out.println("Sorry, not enough for " + name);
		public void spend(int amount, String name) {
		spend(name, amount);
		if (getBalance() < 0) {
		System.out.println("Overdrawn!");
		}
		}

		private void withdraw(String name, int amount) {
		private void spend(String name, int amount) {
		int newBalance = getBalance() - amount;
		Withdrawal withdrawal = new Withdrawal(name, amount, newBalance);
		statement.add(withdrawal);
		Transaction transaction = new Transaction(name, amount, newBalance);
		statement.add(transaction);
		}

		public List<Withdrawal> getStatement() {
		public List<Transaction> getStatement() {
		return statement;
		}
		}

		class Withdrawal {
		class Transaction {
		private final String name;
		private final int amount;
		private final int currentBalance;

		Withdrawal(String name, int amount, int currentBalance) {
		Transaction(String name, int amount, int currentBalance) {
		this.name = name;
		this.amount = amount;
		this.currentBalance = currentBalance;