[Ch15b] Trying to reduce the amount of code needed (2539061f) · Commits · examples / Head First Java 3rd Edition

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

+12 −27

Changes for src/main/java/ch15/ryanmonica/RyanAndMonicaStatementTest.java: 12 added lines, 27 removed lines.
Original line number	Diff line number	Diff line
		@@ -4,18 +4,18 @@ import java.util.List;
		import java.util.concurrent.CopyOnWriteArrayList;
		import java.util.concurrent.ExecutorService;
		import java.util.concurrent.Executors;
		import java.util.concurrent.TimeUnit;

		public class RyanAndMonicaStatementTest {
		public static void main(String[] args) throws InterruptedException {
		BankAccountStatement account = new BankAccountStatement();
		ExecutorService executor = Executors.newCachedThreadPool();
		ExecutorService executor = Executors.newFixedThreadPool(4);
		for (int i = 0; i < 5; i++) {
		executor.execute(new RyanAndMonicaStatementJob("Ryan", account, 20));
		executor.execute(new StatementReaderAccountant("Monica", account));
		executor.execute(new StatementReaderAccountant("Accountant", account));
		executor.execute(new StatementReaderAccountant("Bank Manager", account));
		executor.execute(new StatementReader("Monica", account));
		executor.execute(new StatementReader("Accountant", account));
		executor.execute(new StatementReader("Bank Manager", account));
		}
		executor.shutdown();
		executor.awaitTermination(1, TimeUnit.MINUTES);
		}
		}

		@@ -31,15 +31,8 @@ class RyanAndMonicaStatementJob implements Runnable {
		}

		public void run() {
		for (int i = 0; i < 5; i++) {
		goShopping(amountToSpend);
		}
		}

		private void goShopping(int amount) {
		if (account.getBalance() >= amount) {
		System.out.println(name + " is about to spend");
		account.spend(amount, name);
		if (account.getBalance() >= amountToSpend) {
		account.spend(amountToSpend, name);
		System.out.println(name + " finishes spending");
		} else {
		System.out.println("Sorry, not enough for " + name);
		@@ -47,19 +40,18 @@ class RyanAndMonicaStatementJob implements Runnable {
		}
		}

		class StatementReaderAccountant implements Runnable {
		class StatementReader implements Runnable {
		private final String name;
		private final BankAccountStatement account;

		StatementReaderAccountant(String name, BankAccountStatement account) {
		StatementReader(String name, BankAccountStatement account) {
		this.name = name;
		this.account = account;
		}

		@Override
		public void run() {
		List<Transaction> statement = account.getStatement();
		for (Transaction transaction : statement) {
		for (Transaction transaction : account.getStatement()) {
		System.out.println(name + " read " + transaction);
		}
		}
		@@ -78,13 +70,6 @@ class BankAccountStatement {
		}

		public void spend(int amount, String name) {
		spend(name, amount);
		if (getBalance() < 0) {
		System.out.println("Overdrawn!");
		}
		}

		private void spend(String name, int amount) {
		int newBalance = getBalance() - amount;
		Transaction transaction = new Transaction(name, amount, newBalance);
		statement.add(transaction);
		@@ -120,7 +105,7 @@ class Transaction {

		@Override
		public String toString() {
		return "Withdrawal{" +
		return "Transaction{" +
		"name='" + name + '\'' +
		", amount=" + amount +
		", currentBalance=" + currentBalance +