2021-08-11

thread/src/main/java/kr/pe/elex/examples/Synchronizing.java

@@ -0,0 +1,48 @@
+/*
+ * Examples for Java
+ *
+ * Copyright (c) 2021. Elex. All Rights Reserved.
+ * https://www.elex-project.com/
+ */
+
+package kr.pe.elex.examples;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class Synchronizing {
+	public static void main(String... args) {
+		final Rabbit rabbit = new Rabbit();
+
+		new Thread() {
+			@Override
+			public void run() {
+				rabbit.hello();
+			}
+		}.start();
+		new Thread() {
+			@Override
+			public void run() {
+				rabbit.count();
+			}
+		}.start();
+		new Thread() {
+			@Override
+			public void run() {
+				rabbit.hello();
+			}
+		}.start();
+	}
+
+	static class Rabbit {
+		public synchronized void count() {
+			for (int i = 0; i < 100; i++) {
+				System.out.println("Rabbit says " + i + ".");
+			}
+		}
+
+		public synchronized void hello() {
+			System.out.println("Rabbit says 'Hello'.");
+		}
+	}
+}