enhance gRPC sample
diff --git a/java/dubbo-samples-basic/src/main/java/org/apache/dubbo/samples/basic/BasicConsumer.java b/java/dubbo-samples-basic/src/main/java/org/apache/dubbo/samples/basic/BasicConsumer.java
index dead8c0..5eedffc 100644
--- a/java/dubbo-samples-basic/src/main/java/org/apache/dubbo/samples/basic/BasicConsumer.java
+++ b/java/dubbo-samples-basic/src/main/java/org/apache/dubbo/samples/basic/BasicConsumer.java
@@ -29,10 +29,10 @@
         ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring/dubbo-demo-consumer.xml");
         context.start();
         DemoService demoService = (DemoService) context.getBean("demoService");
-//        String hello = demoService.sayHello("world");
-//        System.out.println(hello);
+        String hello = demoService.sayHello("world");
+        System.out.println(hello);
 
-        System.out.println("start void test...");
-        demoService.testVoid();
+//        System.out.println("start void test...");
+//        demoService.testVoid();
     }
 }
diff --git a/java/dubbo-samples-grpc/dubbo-samples-original/src/main/java/org/apache/dubbo/samples/basic/BasicConsumer.java b/java/dubbo-samples-grpc/dubbo-samples-original/src/main/java/org/apache/dubbo/samples/basic/BasicConsumer.java
index 7004d68..2480890 100644
--- a/java/dubbo-samples-grpc/dubbo-samples-original/src/main/java/org/apache/dubbo/samples/basic/BasicConsumer.java
+++ b/java/dubbo-samples-grpc/dubbo-samples-original/src/main/java/org/apache/dubbo/samples/basic/BasicConsumer.java
@@ -58,9 +58,9 @@
         /**
          * greeter sample
          */
-        System.out.println("-------- Start simple unary call test -------- ");
         DubboGreeterGrpc.IGreeter greeter = (DubboGreeterGrpc.IGreeter) context.getBean("greeter");
 
+        System.out.println("-------- Start simple unary call test -------- ");
         HelloReply reply = greeter.sayHello(HelloRequest.newBuilder().setName("world!").build());
         System.out.println("Result: " + reply.getMessage());
         System.out.println("-------- End simple unary call test -------- \n\n\n");
@@ -68,9 +68,9 @@
         /**
          * route guide sample
          */
-        System.out.println("-------- Start stream call test -------- ");
         DubboRouteGuideGrpc.IRouteGuide routeGuide = (DubboRouteGuideGrpc.IRouteGuide) context.getBean("routeguide");
         RouteGuideClient streamClient = new RouteGuideClient(routeGuide);
+        System.out.println("-------- Start stream call test -------- ");
         try {
             List<Feature> features;
             try {
@@ -82,14 +82,14 @@
             // Looking for a valid feature
             streamClient.getFeature(409146138, -746188906);
 
-//            // Feature missing.
-//            streamClient.getFeature(0, 0);
-//
-//            // Looking for features between 40, -75 and 42, -73.
-//            streamClient.listFeatures(400000000, -750000000, 420000000, -730000000);
-//
-//            // Record a few randomly selected points from the features file.
-//            streamClient.recordRoute(features, 10);
+            // Feature missing.
+            streamClient.getFeature(0, 0);
+
+            // Looking for features between 40, -75 and 42, -73.
+            streamClient.listFeatures(400000000, -750000000, 420000000, -730000000);
+
+            // Record a few randomly selected points from the features file.
+            streamClient.recordRoute(features, 10);
 
             // Send and receive some notes.
             CountDownLatch finishLatch = streamClient.routeChat();
diff --git a/java/dubbo-samples-grpc/pom.xml b/java/dubbo-samples-grpc/pom.xml
index 8a361ef..a7403ef 100644
--- a/java/dubbo-samples-grpc/pom.xml
+++ b/java/dubbo-samples-grpc/pom.xml
@@ -18,13 +18,14 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <groupId>org.apache.dubbo</groupId>
-    <version>1.0-SNAPSHOT</version>
-
     <modelVersion>4.0.0</modelVersion>
 
+    <groupId>org.apache.dubbo</groupId>
+    <version>1.0-SNAPSHOT</version>
     <artifactId>dubbo-samples-grpc</artifactId>
 
+    <packaging>pom</packaging>
+
     <modules>
         <module>dubbo-samples-original</module>
         <module>dubbo-samples-reactor</module>
@@ -42,7 +43,7 @@
             </releases>
             <snapshots>
                 <enabled>true</enabled>
-                <updatePolicy>daily</updatePolicy>
+                <updatePolicy>never</updatePolicy>
             </snapshots>
         </repository>
     </repositories>