Modified Aws S3 client with custom support for checking if object exists in bucket

AmazonS3Client.java

package it.lisik.kodeksy.uploader;

import com.amazonaws.auth.AWSCredentials;

public class AmazonS3Client extends com.amazonaws.services.s3.AmazonS3Client {
    public AmazonS3Client() {
        super();
    }

    public AmazonS3Client(AWSCredentials awsCredentials) {
        super(awsCredentials);
    }

    public boolean doesObjectExistsInBucket(String bucketName, String objectName) {
        return listObjects(bucketName).getObjectSummaries()
                .stream()
                .anyMatch(object -> object.getKey().equals(objectName));
    }
}