[Ch15b] Using lambdas to reduce code (0958a5c4) · Commits · examples / Head First Java 3rd Edition

src/main/java/ch15/LotsOfReaders.java

+6 −30

Changes for src/main/java/ch15/LotsOfReaders.java: 6 added lines, 30 removed lines.
Original line number	Diff line number	Diff line
		@@ -10,45 +10,21 @@ public class LotsOfReaders {
		ChatHistory chatHistory = new ChatHistory();
		ExecutorService executor = Executors.newFixedThreadPool(4);
		for (int i = 0; i < 5; i++) {
		executor.execute(new Chatty(chatHistory));
		executor.execute(new ChatReader("Reader 1", chatHistory));
		executor.execute(new ChatReader("Reader 2", chatHistory));
		final int iteration = i;
		executor.execute(() -> chatHistory.add("Hi there! " + iteration));
		executor.execute(() -> printChatHistory("Reader 1", chatHistory));
		executor.execute(() -> printChatHistory("Reader 2", chatHistory));
		}
		executor.shutdown();
		}
		}

		class ChatReader implements Runnable {
		private String name;
		private ChatHistory chatHistory;

		public ChatReader(String name, ChatHistory chatHistory) {
		this.name = name;
		this.chatHistory = chatHistory;
		}

		@Override
		public void run() {
		private static void printChatHistory(String name, ChatHistory chatHistory) {
		for (Chat chat : chatHistory.getHistory()) {
		System.out.println(name + " read: " + chat);
		}
		}
		}


		class Chatty implements Runnable {
		private ChatHistory chatHistory;

		public Chatty(ChatHistory chatHistory) {
		this.chatHistory = chatHistory;
		}

		@Override
		public void run() {
		chatHistory.add("Hi there!");
		}
		}

		class ChatHistory {
		private final List<Chat> history = new ArrayList<>();

		@@ -62,7 +38,7 @@ class ChatHistory {
		}

		class Chat {
		private String message;
		private final String message;

		public Chat(String message) {
		this.message = message;