How to Configure Amazon Simple Storage Service and Store Files Using Java

Amazon Simple Storage service (Amazon S3) is a simple cloud storage for developers. Developers can configure S3 programmatically. These are the steps for S3 configuration.

Step 1: Setting Up Your Project

<dependency> 
  <groupId>com.amazonaws</groupId>
  <artifactId>aws-java-sdk</artifactId> 
  <version>1.9.2</version> 
</dependency>

Step 2: Authenticate with Amazon S3

AWSCredentials credentials = new BasicAWSCredentials("YourAccessKeyID", "YourSecretAccessKey");

Step 3: Create S3 Client

AmazonS3 s3client = new AmazonS3Client(credentials);

Step 4: Create Bucket

String bucketName = "bitcoinbank"; 
s3client.createBucket(bucketName);

Step 5: List Buckets

for (Bucket bucket : s3client.listBuckets()) { 
      System.out.println(" - " + bucket.getName()); 
}

Step 6: Create Folder in S3 Bucket

public static void createFolder(String bucketName, String folderName, AmazonS3 client) { 
       ObjectMetadata metadata = new ObjectMetadata(); 
       metadata.setContentLength(0); 
       InputStream emptyContent = new ByteArrayInputStream(new byte[0]); 
       PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, folderName + SUFFIX, emptyContent, metadata); 
       client.putObject(putObjectRequest); 
}

Step 7: Upload file in S3

String fileName = folderName + SUFFIX + "bitcoinbank.jpg"; 
s3client.putObject(new PutObjectRequest(bucketName, fileName, 
                  new File("C:\\Users\\user\\Desktop\\bitcoinbank.jpg")).withCannedAcl(CannedAccessControlList.PublicRead));

Step 8: Deleting Files, Folders and Buckets

s3client.deleteObject(bucketName, fileName);
s3client.deleteBucket(bucketName);

Conclusion : This is the simple code for putting your objects (images, videos, documents  etc..) into the S3 bucket. You can make your object public and private also.

Thanks,