AWS - Generate signed url for S3 objects

package com;

import com.amazonaws.AmazonServiceException;
import com.amazonaws.HttpMethod;
import com.amazonaws.SdkClientException;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicSessionCredentials;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest;

import java.io.IOException;
import java.net.URL;

public class GeneratePresignedURL {

    private static BasicSessionCredentials sessionCredentials;

    public static void main(String[] args) throws IOException {
        String clientRegion = "us-east-1";
        String bucketName = "bucketname";
        String objectKey = "CloudServices.png";

        String AccessKeyID = "ASIAIPORVHUBITG7";
        String SecretAccessKey = "WYOrynMz20B5ORHpu9f/m+ufH2t4+fkTjnb";
        String SessionToken = "XdzEIj//////////wEaDBx8AUTyX+PoMuFXUiLrARdFmJCz0ffbywapf9EPCzmy960mugqjVfy1uSoN4+iaSn/GjdE0x5kDGJ330foAe2XxvkbjVzpl4CN7ui6Z/oOiJC25H5/Y3vrV9qmDT/5MoT/CVnUz8vcxGtoDF/UyR5znoy5BlyqkagCaB/RmO6MdzTf9bqh4lPqU8ASn4yQ0YlVdQGvQvDZtsts0hits2pPdvwXKGOmX5zENFTscldFA1fCGK2fOmJp+UbaU+C7KzSNq4io48VdPEYBqSQZxl4W9ZIcdSkrVSzq7q17LCkpB6fVg6bSqmN/0Q3Ej0o0CfLhdIwiEMcfhH2wo4/b22QU=";

        try {

            sessionCredentials = new BasicSessionCredentials(AccessKeyID, SecretAccessKey, SessionToken);

            AmazonS3 s3Client = AmazonS3ClientBuilder.standard()
                    .withRegion(clientRegion)
                    .withCredentials(new AWSStaticCredentialsProvider(sessionCredentials))
                    .build();


            // Set the presigned URL to expire after one hour.            java.util.Date expiration = new java.util.Date();
            long expTimeMillis = expiration.getTime();
            expTimeMillis += 1000 * 60 * 60;
            expiration.setTime(expTimeMillis);

            // Generate the presigned URL.            System.out.println("Generating pre-signed URL.");
            GeneratePresignedUrlRequest generatePresignedUrlRequest =
                    new GeneratePresignedUrlRequest(bucketName, objectKey)
                            .withMethod(HttpMethod.GET)
                            .withExpiration(expiration);
            URL url = s3Client.generatePresignedUrl(generatePresignedUrlRequest);

            System.out.println("Pre-Signed URL: " + url.toString());
        }
        catch(AmazonServiceException e) {
            // The call was transmitted successfully, but Amazon S3 couldn't process            // it, so it returned an error response.            e.printStackTrace();
        }
        catch(SdkClientException e) {
            // Amazon S3 couldn't be contacted for a response, or the client            // couldn't parse the response from Amazon S3.            e.printStackTrace();
        }
    }
}


output:

https://bucketname.s3.amazonaws.com/CloudServices.png?
X-Amz-Security-Token=XdzEIj//////////wEaDBx8AUTyX+PoMuFXUiLrARdFmJCz0ffbywapf9EPCzmy960mugqjVfy1uSoN4+iaSn/GjdE0x5kDGJ330foAe2XxvkbjVzpl4CN7ui6Z/oOiJC25H5/Y3vrV9qmDT/5MoT/CVnUz8vcxGtoDF/UyR5znoy5BlyqkagCaB/RmO6MdzTf9bqh4lPqU8ASn4yQ0YlVdQGvQvDZtsts0hits2pPdvwXKGOmX5zENFTscldFA1fCGK2fOmJp+UbaU+C7KzSNq4io48VdPEYBqSQZxl4W9ZIcdSkrVSzq7q17LCkpB6fVg6bSqmN/0Q3Ej0o0CfLhdIwiEMcfhH2wo4/b22QU=
&X-Amz-Algorithm=AWS4-HMAC-SHA256
&X-Amz-Date=20180705T064708Z
&X-Amz-SignedHeaders=host
&X-Amz-Expires=3599
&X-Amz-Credential=ASIAIPORVHUBITG7%2F20180705%2Fus-east-1%2Fs3%2Faws4_request
&X-Amz-Signature=39a033db5db1acd7ce579c7cf66adf3b14117676834345a0acdfa0fd1c42c364