Add download example to tutorial.

jiuyangzhao · jiuyangzhao · commit e7a6960b3112 · 2018-01-12T14:30:43.000-08:00
diff --git a/examples/tutorial/src/main/java/com/dropbox/core/examples/tutorial/Main.java b/examples/tutorial/src/main/java/com/dropbox/core/examples/tutorial/Main.java
@@ -1,5 +1,6 @@
 package com.dropbox.core.examples.tutorial;
 
+import com.dropbox.core.DbxDownloader;
 import com.dropbox.core.DbxException;
 import com.dropbox.core.DbxRequestConfig;
 import com.dropbox.core.v2.callbacks.DbxGlobalCallbackFactory;
@@ -14,6 +15,7 @@
 import java.util.List;
 
 import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.InputStream;
 import java.io.IOException;
 
@@ -48,5 +50,14 @@ public static void main(String args[]) throws DbxException, IOException {
             FileMetadata metadata = client.files().uploadBuilder("/test.txt")
                 .uploadAndFinish(in);
         }
+
+        DbxDownloader<FileMetadata> downloader = client.files().download("/test.txt");
+        try {
+            FileOutputStream out = new FileOutputStream("test.txt");
+            downloader.download(out);
+            out.close();
+        } catch (DbxException ex) {
+            System.out.println(ex.getMessage());
+        }
     }
 }
