s3 java sdk_AWS S3 Java SDK - Access Denied

I am trying to access a bucket and all its object using AWS SDK but while running the code i am getting an error as Exception in thread "main" com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: X), S3 Extended Request ID: Y=

Kindly suggest, where i am lacking and why access denied error is occurring although i have taken all following permission to the bucket: s3:GetObject s3:GetObjectVersion s3:GetObjectAcl s3:GetBucketAcl s3:GetBucketCORS s3:GetBucketLocation s3:GetBucketLogging s3:ListBucket s3:ListBucketVersions s3:ListBucketMultipartUploads s3:GetObjectTorrent s3:GetObjectVersionAcl

Code is as follows: AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey); ClientConfiguration clientConfig = new ClientConfiguration(); clientConfig.setProtocol(Protocol.HTTP); AmazonS3 conn = new AmazonS3Client(credentials, clientConfig); conn.setEndpoint(bucketName); Bucket bucket = conn.createBucket(bucketName); ObjectListing objects = conn.listObjects(bucket.getName()); do { for (S3ObjectSummary objectSummary : objects.getObjectSummaries()) { System.out.println(objectSummary.getKey() + "\t" + objectSummary.getSize() + "\t" + StringUtils.fromDate(objectSummary.getLastModified())); } objects = conn.listNextBatchOfObjects(objects); } while (objects.isTruncated());