Here is sample code for uploading image files to cloud storage bucket in google cloud platform Step 1 Create a google cloud project in cloud (https://console.cloud.google.com/) enable cloud storage Step 2: Create a new web application project I am using Eclipse with Java for App engine Project Step 3: create a POST web service method the below code for upload image to the existing bucket in google cloud and the uploaded image url will be returned Code @Path("/addres") @POST @Consumes(MediaType.MULTIPART_FORM_DATA) public String addRestaurant( @FormDataParam("imgname") String imagename, @FormDataParam("file") InputStream uploadedInputStream, @FormDataParam("file") FormDataContentDisposition restImages ) throws IOException { try { // Create your service object Storage storage = St...