Await Termination

Rajeev Kumar Singh · Rajeev Kumar Singh · commit a390a2894f69 · 2017-05-12T16:14:33.000+05:30
diff --git a/java-concurrency-issues-and-synchronization/Readme.md b/java-concurrency-issues-and-synchronization/Readme.md
diff --git a/java-concurrency-issues-and-synchronization/src/RaceConditionExample.java b/java-concurrency-issues-and-synchronization/src/RaceConditionExample.java
@@ -1,5 +1,6 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
 /**
  * Created by rajeevkumarsingh on 11/05/17.
@@ -18,7 +19,7 @@ public int getCount() {
 
 public class RaceConditionExample {
 
-    public static void main(String[] args) {
+    public static void main(String[] args) throws InterruptedException {
         ExecutorService executorService = Executors.newFixedThreadPool(10);
 
         Counter counter = new Counter();
@@ -27,6 +28,9 @@ public static void main(String[] args) {
             executorService.submit(() -> counter.increment());
         }
 
+        executorService.shutdown();
+        executorService.awaitTermination(60, TimeUnit.SECONDS);
+
         System.out.println("Final count is : " + counter.getCount());
     }
 }
diff --git a/java-concurrency-issues-and-synchronization/src/SynchronizedBlockExample.java b/java-concurrency-issues-and-synchronization/src/SynchronizedBlockExample.java
@@ -1,5 +1,6 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
 /**
  * Created by rajeevkumarsingh on 11/05/17.
@@ -20,14 +21,17 @@ public int getCount() {
 }
 
 public class SynchronizedBlockExample {
-    public static void main(String[] args) {
+    public static void main(String[] args) throws InterruptedException {
         ExecutorService executorService = Executors.newFixedThreadPool(10);
         FineGrainedSynchronizedCounter counter = new FineGrainedSynchronizedCounter();
 
         for(int i = 0; i < 1000; i++) {
             executorService.submit(() -> counter.increment());
         }
 
+        executorService.shutdown();
+        executorService.awaitTermination(60, TimeUnit.SECONDS);
+
         System.out.println("Final count is " + counter.getCount());
     }
 }
diff --git a/java-concurrency-issues-and-synchronization/src/SynchronizedMethodExample.java b/java-concurrency-issues-and-synchronization/src/SynchronizedMethodExample.java
@@ -1,5 +1,6 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
 /**
  * Created by rajeevkumarsingh on 11/05/17.
@@ -9,6 +10,7 @@ class SynchronizedCounter {
 
     // Synchronized Method
     public synchronized void increment() {
+	System.out.println(Thread.currentThread().getName());
         count = count + 1;
     }
 
@@ -18,7 +20,7 @@ public int getCount() {
 }
 
 public class SynchronizedMethodExample {
-    public static void main(String[] args) {
+    public static void main(String[] args) throws InterruptedException {
         ExecutorService executorService = Executors.newFixedThreadPool(10);
 
         SynchronizedCounter synchronizedCounter = new SynchronizedCounter();
@@ -27,6 +29,9 @@ public static void main(String[] args) {
             executorService.submit(() -> synchronizedCounter.increment());
         }
 
+        executorService.shutdown();
+        executorService.awaitTermination(60, TimeUnit.SECONDS);
+
         System.out.println("Final count is : " + synchronizedCounter.getCount());
     }
-}
+}

Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,6 @@`
`1`	`1`	`import java.util.concurrent.ExecutorService;`
`2`	`2`	`import java.util.concurrent.Executors;`
	`3`	`+import java.util.concurrent.TimeUnit;`
`3`	`4`
`4`	`5`	`/**`
`5`	`6`	`* Created by rajeevkumarsingh on 11/05/17.`
`@@ -18,7 +19,7 @@ public int getCount() {`
`18`	`19`
`19`	`20`	`public class RaceConditionExample {`
`20`	`21`
`21`		`- public static void main(String[] args) {`
	`22`	`+ public static void main(String[] args) throws InterruptedException {`
`22`	`23`	`ExecutorService executorService = Executors.newFixedThreadPool(10);`
`23`	`24`
`24`	`25`	`Counter counter = new Counter();`
`@@ -27,6 +28,9 @@ public static void main(String[] args) {`
`27`	`28`	`executorService.submit(() -> counter.increment());`
`28`	`29`	`}`
`29`	`30`
	`31`	`+ executorService.shutdown();`
	`32`	`+ executorService.awaitTermination(60, TimeUnit.SECONDS);`
	`33`	`+`
`30`	`34`	`System.out.println("Final count is : " + counter.getCount());`
`31`	`35`	`}`
`32`	`36`	`}`