Update copyright lines with new year.

[simgrid.git] / examples / java / async / dsend / Main.java

diff --git a/examples/java/async/dsend/Main.java b/examples/java/async/dsend/Main.java
index 17cc8d2..5227afa 100644 (file)
--- a/examples/java/async/dsend/Main.java
+++ b/examples/java/async/dsend/Main.java
@@ -1,28 +1,35 @@
-/* Copyright (c) 2006-2014, 2016. The SimGrid Team.
- * All rights reserved.                                                     */
+/* Copyright (c) 2006-2019. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
 package async.dsend;
 
-import org.simgrid.msg.Msg;
+/** This example demonstrates the use of the Task.dsend() method.
+ * 
+ *  This way, the sender can be detached from the communication: it is not blocked as with Task.send() 
+ *  and has nothing to do at the end as with Task.isend() where it must do a Comm.wait().
+ */
+
 import org.simgrid.msg.Host;
-import org.simgrid.msg.NativeException;
-import org.simgrid.msg.HostNotFoundException;
+import org.simgrid.msg.Msg;
 
 class Main {
-  public static void main(String[] args) throws NativeException, HostNotFoundException {
+  private Main() {
+       /* This is just to ensure that nobody creates an instance of this singleton */
+    throw new IllegalAccessError("Utility class");
+  }
+
+  public static void main(String[] args) {
     Msg.init(args);
 
-    if (args.length < 1) {
-    Msg.info("Usage   : Main platform_file");
-    Msg.info("example : Main ../platforms/small_platform.xml");
-    System.exit(1);
-  }
+    String platform = "../platforms/small_platform.xml";
+    if (args.length >= 1) {
+       platform = args[0]; // Override the default value if passed on the command line
+    }
 
     /* construct the platform and deploy the application */
-    Msg.createEnvironment(args[0]);
+    Msg.createEnvironment(platform);
     Host[] hosts = Host.all();
     new Sender(hosts[0],"Sender").start();
     for (int i=1; i < hosts.length; i++){