Book Image

Amazon S3 Essentials

By : Sunil Gulabani
Book Image

Amazon S3 Essentials

By: Sunil Gulabani

Overview of this book

Amazon Simple Storage Service (Amazon S3), provides developers and IT teams with secure, durable, and highly-scalable object storage. Amazon S3 is easy to use, with a simple web services interface to store and retrieve any amount of data from anywhere on the web. S3 is automatically web scalable and responds to the requirements of your application and traffic, and therefore offers a key element to help companies deal dynamically with any spike in traffic for their application (such as a free e-book offer). This book starts with the basics of the Amazon S3 and its features, and you will quickly get an understanding how to use the Amazon Management Console for Amazon S3 which is the simplest way to manage Amazon S3. Next, we will cover basic operations on bucket, folder, objects. Once the basic operations are understood, you will know how to use Amazon S3 using Java SDK. Following that, you will learn about Copy Objects and Multipart copy objects for large objects size. You will also learn to manage the life cycle of bucket and how to share resources to the different domain by configuring CORS. The book will then guide you through the development and deployment of a static website on Amazon S3 using different services of Amazon. By the end of the book, you will be able to create a scalable application using Amazon S3.
Table of Contents (12 chapters)

Delete operations


For deleting a bucket, the primary condition is that the bucket should be empty. So we will now see how to delete the object, the folder, and then the bucket. To delete an object/folder, execute the following command:

s3.deleteObject(bucketName, OBJECT_KEY_OR_FOLDER_NAME);

Or execute the following command:

s3.deleteObject(new DeleteObjectRequest(bucketName, OBJECT_KEY_OR_FOLDER_NAME));

Replace bucketName with the actual bucket name and OBJECT_KEY_OR_FOLDER_NAME with either your object key or the name of the folder that is supposed to be deleted.

The complete code for delete operations on buckets, folders, and objects is as follows:

package com.chapter3;

import java.util.List;

import com.amazonaws.services.s3.model.DeleteObjectRequest;
import com.amazonaws.services.s3.model.ListObjectsRequest;
import com.amazonaws.services.s3.model.ObjectListing;
import com.amazonaws.services.s3.model.S3ObjectSummary;

public class DeleteOperations extends AmazonS3ClientInitializer{

  public...