commit Exercise_30_11

csv77 · csv77 · commit 351cbb45c878 · 2017-09-30T21:57:33.000+02:00
diff --git a/Chapter_30/exercise_30_11/Exercise_30_11.java b/Chapter_30/exercise_30_11/Exercise_30_11.java
@@ -0,0 +1,38 @@
+package exercise_30_11;
+
+public class Exercise_30_11 {
+    
+    public static void main(String[] args) {
+        Object object1 = new Object();
+        Object object2 = new Object();
+        Thread thread1 = new Thread(new Task(object1, object2, 1));
+        Thread thread2 = new Thread(new Task(object2, object1, 2));
+        thread1.start();
+        thread2.start();
+    }
+    
+    public static class Task implements Runnable {
+        public Object object1;
+        public Object object2;
+        public int taskIndex;
+
+        public Task(Object object1, Object object2, int taskIndex) {
+            this.object1 = object1;
+            this.object2 = object2;
+            this.taskIndex = taskIndex;
+        }
+        
+        @Override
+        public void run() {
+            System.out.println("Task" + taskIndex + " is running.");
+            while(true) {
+                synchronized(object1) {
+                    System.out.println("Task" + taskIndex + " locked object1.");
+                    synchronized(object2) {
+                        System.out.println("Task" + taskIndex + " locked object2.");
+                    }
+                }
+            }
+        }
+    }
+}
