Update java-thumb.md

Author: v-jaswel

articles/cognitive-services/Computer-vision/QuickStarts/java-thumb.md

@@ -30,56 +30,61 @@ To create and run the sample, do the following steps:
 
 1. Create a new Java project in your favorite IDE or editor. If the option is available, create the Java project from a command line application template.
 1. Import the following libraries into your Java project. If you're using Maven, the Maven coordinates are provided for each library.
-   - [Apache HTTP client](https://hc.apache.org/downloads.cgi) (org.apache.httpcomponents:httpclient:4.5.5)
-   - [Apache HTTP core](https://hc.apache.org/downloads.cgi) (org.apache.httpcomponents:httpcore:4.4.9)
+   - [Apache HTTP client](https://hc.apache.org/downloads.cgi) (org.apache.httpcomponents:httpclient:4.5.X)
+   - [Apache HTTP core](https://hc.apache.org/downloads.cgi) (org.apache.httpcomponents:httpcore:4.4.X)
    - [JSON library](https://github.com/stleary/JSON-java) (org.json:json:20180130)
-1. Add the following `import` statements to the file that contains the `Main` public class for your project.  
+1. Add the following `import` statements to your main class: 
 
    ```java
-   import java.awt.*;
-   import javax.swing.*;
-   import java.net.URI;
-   import java.io.InputStream;
-   import javax.imageio.ImageIO;
-   import java.awt.image.BufferedImage;
-   import org.apache.http.HttpEntity;
-   import org.apache.http.HttpResponse;
-   import org.apache.http.client.methods.HttpPost;
-   import org.apache.http.entity.StringEntity;
-   import org.apache.http.client.utils.URIBuilder;
-   import org.apache.http.impl.client.CloseableHttpClient;
-   import org.apache.http.impl.client.HttpClientBuilder;
-   import org.apache.http.util.EntityUtils;
-   import org.json.JSONObject;
+    import java.awt.*;
+    import javax.swing.*;
+    import java.net.URI;
+    import java.io.InputStream;
+    import javax.imageio.ImageIO;
+    import java.awt.image.BufferedImage;
+    import org.apache.http.HttpEntity;
+    import org.apache.http.HttpResponse;
+    import org.apache.http.client.methods.HttpPost;
+    import org.apache.http.entity.StringEntity;
+    import org.apache.http.client.utils.URIBuilder;
+    import org.apache.http.impl.client.CloseableHttpClient;
+    import org.apache.http.impl.client.HttpClientBuilder;
+    import org.apache.http.util.EntityUtils;
+    import org.json.JSONObject;
    ```
 
-1. Replace the `Main` public class with the following code.
-1. Optionally, replace the value of `imageToAnalyze` with the URL of a different image for which you want to generate a thumbnail.
+1. Add the rest of the sample code below, beneath the imports (change to your class name if needed).
+1. Add your Computer Vision subscription key and endpoint to your environment variables.
+1. Optionally, replace the value of `imageToAnalyze` with the URL of your own image.
 1. Save, then build the Java project.
-1. If you're using an IDE, run `Main`. Otherwise, open a command prompt window and then use the `java` command to run the compiled class. For example, `java Main`.
+1. If you're using an IDE, run `GenerateThumbnail`. Otherwise, run from the command line (commands below).
 
 ```java
-// This sample uses the following libraries:
-//  - Apache HTTP client (org.apache.httpcomponents:httpclient:4.5.5)
-//  - Apache HTTP core (org.apache.httpcomponents:httpccore:4.4.9)
-//  - JSON library (org.json:json:20180130).
-
-
-public class Main {
-    // **********************************************
-    // *** Update or verify the following values. ***
-    // **********************************************
-
-    // Add your Computer Vision subscription key and endpoint to your environment variables.
-    // After setting, close and then re-open your command shell or project for the changes to take effect.
-    String subscriptionKey = System.getenv("COMPUTER_VISION_SUBSCRIPTION_KEY");
-    String endpoint = ("COMPUTER_VISION_ENDPOINT");
-
-    private static final String uriBase = endpoint + 
-            "vision/v2.1/generateThumbnail";
-
-    private static final String imageToAnalyze =
-        "https://upload.wikimedia.org/wikipedia/commons/9/94/Bloodhound_Puppy.jpg";
+/**
+ * This sample uses the following libraries (create a "lib" folder to place them in): 
+ * Apache HTTP client:
+ * org.apache.httpcomponents:httpclient:4.5.X 
+ * Apache HTTP core:
+ * org.apache.httpcomponents:httpccore:4.4.X 
+ * JSON library:
+ * org.json:json:20180130
+ *
+ * To build/run from the command line: 
+ *     javac GenerateThumbnail.java -cp .;lib\*
+ *     java -cp .;lib\* GenerateThumbnail
+ */
+
+public class GenerateThumbnail {
+
+    // Add your Computer Vision subscription key and endpoint to your environment
+    // variables. Then, close and then re-open your command shell or project for the
+    // changes to take effect.
+    private static String subscriptionKey = System.getenv("COMPUTER_VISION_SUBSCRIPTION_KEY");
+    private static String endpoint = System.getenv("COMPUTER_VISION_ENDPOINT");
+    // The endpoint path
+    private static final String uriBase = endpoint + "vision/v3.0/generateThumbnail";
+    // It's optional if you'd like to use your own image instead of this one.
+    private static final String imageToAnalyze = "https://upload.wikimedia.org/wikipedia/commons/9/94/Bloodhound_Puppy.jpg";
 
     public static void main(String[] args) {
         CloseableHttpClient httpClient = HttpClientBuilder.create().build();
@@ -101,14 +106,15 @@ public class Main {
             request.setHeader("Ocp-Apim-Subscription-Key", subscriptionKey);
 
             // Request body.
-            StringEntity requestEntity =
-                    new StringEntity("{\"url\":\"" + imageToAnalyze + "\"}");
+            StringEntity requestEntity = new StringEntity("{\"url\":\"" + imageToAnalyze + "\"}");
             request.setEntity(requestEntity);
 
             // Call the REST API method and get the response entity.
             HttpResponse response = httpClient.execute(request);
             HttpEntity entity = response.getEntity();
 
+            System.out.println("status" + response.getStatusLine().getStatusCode());
+
             // Check for success.
             if (response.getStatusLine().getStatusCode() == 200) {
                 // Display the thumbnail.
@@ -123,11 +129,12 @@ public class Main {
             }
         } catch (Exception e) {
             System.out.println(e.getMessage());
+            e.printStackTrace();
         }
     }
 
     // Displays the given input stream as an image.
-    private static void displayImage(InputStream inputStream) {
+    public static void displayImage(InputStream inputStream) {
         try {
             BufferedImage bufferedImage = ImageIO.read(inputStream);
 
@@ -161,4 +168,4 @@ Explore a Java Swing application that uses Computer Vision to perform optical ch
 > [!div class="nextstepaction"]
 > [Computer Vision API Java Tutorial](../Tutorials/java-tutorial.md)
 
-* To rapidly experiment with the Computer Vision API, try the [Open API testing console](https://westcentralus.dev.cognitive.microsoft.com/docs/services/5adf991815e1060e6355ad44/operations/56f91f2e778daf14a499e1fa/console).
+* To rapidly experiment with the Computer Vision API, try the [Open API testing console](https://westcentralus.dev.cognitive.microsoft.com/docs/services/5adf991815e1060e6355ad44/operations/56f91f2e778daf14a499e1fa/console).