adds sample code to test no content response.

Author: yepher

apps/sparkpost-samples-app/src/main/java/com/sparkpost/samples/ForceTransportError.java

@@ -0,0 +1,49 @@
+
+package com.sparkpost.samples;
+
+import java.io.IOException;
+
+import org.apache.log4j.Level;
+import org.apache.log4j.Logger;
+
+import com.sparkpost.Client;
+import com.sparkpost.exception.SparkPostException;
+import com.sparkpost.model.Webhook;
+import com.sparkpost.resources.ResourceWebhooks;
+import com.sparkpost.sdk.samples.helpers.SparkPostBaseApp;
+import com.sparkpost.transport.RestConnection;
+
+public class ForceTransportError extends SparkPostBaseApp {
+
+    static final Logger logger = Logger.getLogger(ForceTransportError.class);
+
+    private Client client;
+
+    public static void main(String[] args) throws SparkPostException, IOException {
+        Logger.getRootLogger().setLevel(Level.DEBUG);
+
+        ForceTransportError app = new ForceTransportError();
+        app.runApp();
+    }
+
+    private void runApp() throws SparkPostException, IOException {
+        try {
+            foceFourHundredError();
+        } catch (SparkPostException e) {
+            e.printStackTrace();
+        } catch (Exception e1) {
+            e1.printStackTrace();
+        }
+    }
+
+    // Test https://github.com/SparkPost/java-sparkpost/issues/44#issuecomment-215549742
+    private void foceFourHundredError() throws SparkPostException, IOException {
+        this.client = this.newConfiguredClient();
+
+        RestConnection restConnection = new RestConnection(this.client);
+        Webhook webhook = new Webhook();
+        webhook.setName("name with spaces");
+        ResourceWebhooks.update(restConnection, webhook.getName(), webhook);
+    }
+
+}