Merge branch 'master' of https://github.com/JonCook/tutorials

aws/.gitignore

@@ -0,0 +1,2 @@
+/target/
+.idea/

aws/README.md

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+## AWS
+
+This module contains articles about AWS
+
+### Relevant articles
+
+- [AWS Lambda Using DynamoDB With Java](https://www.baeldung.com/aws-lambda-dynamodb-java)
+- [AWS S3 with Java](https://www.baeldung.com/aws-s3-java)
+- [AWS Lambda With Java](https://www.baeldung.com/java-aws-lambda)
+- [Managing EC2 Instances in Java](https://www.baeldung.com/ec2-java)
+- [Multipart Uploads in Amazon S3 with Java](https://www.baeldung.com/aws-s3-multipart-upload)
+- [Integration Testing with a Local DynamoDB Instance](https://www.baeldung.com/dynamodb-local-integration-tests)
+- [Using the JetS3t Java Client With Amazon S3](https://www.baeldung.com/jets3t-amazon-s3)
+- [Managing Amazon SQS Queues in Java](https://www.baeldung.com/aws-queues-java)
+- [Guide to AWS Aurora RDS with Java](https://www.baeldung.com/aws-aurora-rds-java)

aws/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>aws</artifactId>
+    <version>0.1.0-SNAPSHOT</version>
+    <name>aws</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.amazonaws</groupId>
+            <artifactId>aws-java-sdk</artifactId>
+            <version>${aws-java-sdk.version}</version>
+        </dependency>
+       <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>${mockito-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>${assertj-core.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.amazonaws</groupId>
+            <artifactId>aws-lambda-java-core</artifactId>
+            <version>${aws-lambda-java-core.version}</version>
+            <exclusions>
+                <exclusion>
+                    <artifactId>commons-logging</artifactId>
+                    <groupId>commons-logging</groupId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>com.amazonaws</groupId>
+            <artifactId>aws-lambda-java-events</artifactId>
+            <version>${aws-lambda-java-events.version}</version>
+            <exclusions>
+                <exclusion>
+                    <artifactId>commons-logging</artifactId>
+                    <groupId>commons-logging</groupId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>${commons-io.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>${gson.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.amazonaws</groupId>
+            <artifactId>DynamoDBLocal</artifactId>
+            <version>${dynamodblocal.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <!-- JetS3t -->
+        <dependency>
+            <groupId>org.lucee</groupId>
+            <artifactId>jets3t</artifactId>
+            <version>${jets3t-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.lucee</groupId>
+            <artifactId>commons-codec</artifactId>
+            <version>${commons-codec-version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-shade-plugin</artifactId>
+                <version>${maven-shade-plugin.version}</version>
+                <configuration>
+                    <createDependencyReducedPom>false</createDependencyReducedPom>
+                </configuration>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>shade</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <repositories>
+        <repository>
+            <id>dynamodb-local</id>
+            <name>DynamoDB Local Release Repository</name>
+            <url>${dynamodblocal.repository.url}</url>
+        </repository>
+    </repositories>
+
+    <properties>
+        <aws-lambda-java-events.version>1.3.0</aws-lambda-java-events.version>
+        <aws-lambda-java-core.version>1.1.0</aws-lambda-java-core.version>
+        <gson.version>2.8.0</gson.version>
+        <aws-java-sdk.version>1.11.290</aws-java-sdk.version>
+        <mockito-core.version>2.21.0</mockito-core.version>
+        <assertj-core.version>3.8.0</assertj-core.version>
+        <dynamodblocal.version>1.11.86</dynamodblocal.version>
+        <dynamodblocal.repository.url>https://s3-us-west-2.amazonaws.com/dynamodb-local/release</dynamodblocal.repository.url>
+        <commons-codec-version>1.10.L001</commons-codec-version>
+        <jets3t-version>0.9.4.0006L</jets3t-version>
+        <maven-shade-plugin.version>3.0.0</maven-shade-plugin.version>
+    </properties>
+
+</project>

aws/src/main/java/com/baeldung/dynamodb/entity/ProductInfo.java

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+package com.baeldung.dynamodb.entity;
+
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAttribute;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAutoGeneratedKey;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
+
+@DynamoDBTable(tableName = "ProductInfo")
+public class ProductInfo {
+
+    private String id;
+    private String msrp;
+    private String cost;
+
+    public ProductInfo() {
+    }
+
+    public ProductInfo(String cost, String msrp) {
+        this.msrp = msrp;
+        this.cost = cost;
+    }
+
+    @DynamoDBHashKey
+    @DynamoDBAutoGeneratedKey
+    public String getId() {
+        return id;
+    }
+
+    @DynamoDBAttribute
+    public String getMsrp() {
+        return msrp;
+    }
+
+    @DynamoDBAttribute
+    public String getCost() {
+        return cost;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public void setMsrp(String msrp) {
+        this.msrp = msrp;
+    }
+
+    public void setCost(String cost) {
+        this.cost = cost;
+    }
+
+}

aws/src/main/java/com/baeldung/dynamodb/repository/AbstractRepository.java

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+package com.baeldung.dynamodb.repository;
+
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBScanExpression;
+
+import java.io.Serializable;
+import java.lang.reflect.ParameterizedType;
+import java.util.List;
+
+public abstract class AbstractRepository<T, ID extends Serializable> {
+
+    protected DynamoDBMapper mapper;
+    protected Class<T> entityClass;
+
+    protected AbstractRepository() {
+        ParameterizedType genericSuperclass = (ParameterizedType) getClass().getGenericSuperclass();
+
+        // This entityClass refers to the actual entity class in the subclass declaration.
+
+        // For instance, ProductInfoDAO extends AbstractDAO<ProductInfo, String>
+        // In this case entityClass = ProductInfo, and ID is String type
+        // which refers to the ProductInfo's partition key string value
+        this.entityClass = (Class<T>) genericSuperclass.getActualTypeArguments()[0];
+    }
+
+    public void save(T t) {
+        mapper.save(t);
+    }
+
+    public T findOne(ID id) {
+        return mapper.load(entityClass, id);
+    }
+
+    /**
+     * <strong>WARNING:</strong> It is not recommended to perform full table scan
+     * targeting the real production environment.
+     *
+     * @return All items
+     */
+    public List<T> findAll() {
+        DynamoDBScanExpression scanExpression = new DynamoDBScanExpression();
+        return mapper.scan(entityClass, scanExpression);
+    }
+
+    public void setMapper(DynamoDBMapper dynamoDBMapper) {
+        this.mapper = dynamoDBMapper;
+    }
+
+}

aws/src/main/java/com/baeldung/dynamodb/repository/ProductInfoRepository.java

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+package com.baeldung.dynamodb.repository;
+
+import com.baeldung.dynamodb.entity.ProductInfo;
+
+public class ProductInfoRepository extends AbstractRepository<ProductInfo, String> {
+}

aws/src/main/java/com/baeldung/ec2/EC2Application.java

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+package com.baeldung.ec2;
+
+import java.util.Arrays;
+
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.ec2.AmazonEC2;
+import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
+import com.amazonaws.services.ec2.model.AuthorizeSecurityGroupIngressRequest;
+import com.amazonaws.services.ec2.model.CreateKeyPairRequest;
+import com.amazonaws.services.ec2.model.CreateKeyPairResult;
+import com.amazonaws.services.ec2.model.CreateSecurityGroupRequest;
+import com.amazonaws.services.ec2.model.DescribeInstancesRequest;
+import com.amazonaws.services.ec2.model.DescribeInstancesResult;
+import com.amazonaws.services.ec2.model.DescribeKeyPairsRequest;
+import com.amazonaws.services.ec2.model.DescribeKeyPairsResult;
+import com.amazonaws.services.ec2.model.IpPermission;
+import com.amazonaws.services.ec2.model.IpRange;
+import com.amazonaws.services.ec2.model.MonitorInstancesRequest;
+import com.amazonaws.services.ec2.model.RebootInstancesRequest;
+import com.amazonaws.services.ec2.model.RunInstancesRequest;
+import com.amazonaws.services.ec2.model.StartInstancesRequest;
+import com.amazonaws.services.ec2.model.StopInstancesRequest;
+import com.amazonaws.services.ec2.model.UnmonitorInstancesRequest;
+
+public class EC2Application {
+
+    private static final AWSCredentials credentials;
+
+    static {
+        // put your accesskey and secretkey here
+        credentials = new BasicAWSCredentials(
+            "<AWS accesskey>", 
+            "<AWS secretkey>"
+        );
+    }
+
+    public static void main(String[] args) {
+       
+        // Set up the client
+        AmazonEC2 ec2Client = AmazonEC2ClientBuilder.standard()
+            .withCredentials(new AWSStaticCredentialsProvider(credentials))
+            .withRegion(Regions.US_EAST_1)
+            .build();
+
+        // Create a security group
+        CreateSecurityGroupRequest createSecurityGroupRequest = new CreateSecurityGroupRequest().withGroupName("BaeldungSecurityGroup")
+            .withDescription("Baeldung Security Group");
+        ec2Client.createSecurityGroup(createSecurityGroupRequest);
+
+        // Allow HTTP and SSH traffic
+        IpRange ipRange1 = new IpRange().withCidrIp("0.0.0.0/0");
+
+        IpPermission ipPermission1 = new IpPermission().withIpv4Ranges(Arrays.asList(new IpRange[] { ipRange1 }))
+            .withIpProtocol("tcp")
+            .withFromPort(80)
+            .withToPort(80);
+
+        IpPermission ipPermission2 = new IpPermission().withIpv4Ranges(Arrays.asList(new IpRange[] { ipRange1 }))
+            .withIpProtocol("tcp")
+            .withFromPort(22)
+            .withToPort(22);
+
+        AuthorizeSecurityGroupIngressRequest authorizeSecurityGroupIngressRequest = new AuthorizeSecurityGroupIngressRequest()
+            .withGroupName("BaeldungSecurityGroup")
+            .withIpPermissions(ipPermission1, ipPermission2);
+
+        ec2Client.authorizeSecurityGroupIngress(authorizeSecurityGroupIngressRequest);
+
+        // Create KeyPair
+        CreateKeyPairRequest createKeyPairRequest = new CreateKeyPairRequest()
+            .withKeyName("baeldung-key-pair");
+        CreateKeyPairResult createKeyPairResult = ec2Client.createKeyPair(createKeyPairRequest);
+        String privateKey = createKeyPairResult
+            .getKeyPair()
+            .getKeyMaterial(); // make sure you keep it, the private key, Amazon doesn't store the private key
+
+        // See what key-pairs you've got
+        DescribeKeyPairsRequest describeKeyPairsRequest = new DescribeKeyPairsRequest();
+        DescribeKeyPairsResult describeKeyPairsResult = ec2Client.describeKeyPairs(describeKeyPairsRequest);
+
+        // Launch an Amazon Instance
+        RunInstancesRequest runInstancesRequest = new RunInstancesRequest().withImageId("ami-97785bed") // https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html | https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/usingsharedamis-finding.html
+            .withInstanceType("t2.micro") // https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html
+            .withMinCount(1)
+            .withMaxCount(1)
+            .withKeyName("baeldung-key-pair") // optional - if not present, can't connect to instance
+            .withSecurityGroups("BaeldungSecurityGroup");
+
+        String yourInstanceId = ec2Client.runInstances(runInstancesRequest).getReservation().getInstances().get(0).getInstanceId();
+
+        // Start an Instance
+        StartInstancesRequest startInstancesRequest = new StartInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.startInstances(startInstancesRequest);
+
+        // Monitor Instances
+        MonitorInstancesRequest monitorInstancesRequest = new MonitorInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.monitorInstances(monitorInstancesRequest);
+
+        UnmonitorInstancesRequest unmonitorInstancesRequest = new UnmonitorInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.unmonitorInstances(unmonitorInstancesRequest);
+
+        // Reboot an Instance
+
+        RebootInstancesRequest rebootInstancesRequest = new RebootInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.rebootInstances(rebootInstancesRequest);
+
+        // Stop an Instance
+        StopInstancesRequest stopInstancesRequest = new StopInstancesRequest()
+            .withInstanceIds(yourInstanceId);
+
+        ec2Client.stopInstances(stopInstancesRequest)
+            .getStoppingInstances()
+            .get(0)
+            .getPreviousState()
+            .getName();
+
+        // Describe an Instance
+        DescribeInstancesRequest describeInstancesRequest = new DescribeInstancesRequest();
+        DescribeInstancesResult response = ec2Client.describeInstances(describeInstancesRequest);
+        System.out.println(response.getReservations()
+            .get(0)
+            .getInstances()
+            .get(0)
+            .getKernelId());
+    }
+}

aws/src/main/java/com/baeldung/rds/AWSRDSService.java

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+package com.baeldung.rds;
+
+import com.amazonaws.auth.AWSCredentialsProvider;
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.rds.AmazonRDS;
+import com.amazonaws.services.rds.AmazonRDSClientBuilder;
+import com.amazonaws.services.rds.model.*;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.sql.*;
+import java.util.List;
+import java.util.Properties;
+import java.util.UUID;
+import java.util.logging.Logger;
+
+public class AWSRDSService {
+
+
+    final static Logger logger = Logger.getLogger(AWSRDSService.class.getName());
+    private AWSCredentialsProvider credentials;
+    private AmazonRDS amazonRDS;
+    private String db_username;
+    private String db_password;
+    private String db_database;
+    private String db_hostname;
+
+    /*
+    * User access key and secret key must be set before execute any operation.
+    * Follow the link on how to get the user access and secret key
+    * https://aws.amazon.com/blogs/security/wheres-my-secret-access-key/
+    * **/
+    public AWSRDSService() throws IOException {
+        //Init RDS client with credentials and region.
+        credentials = new
+                AWSStaticCredentialsProvider(new
+                BasicAWSCredentials("<ACCESS_KEY>",
+                "<SECRET_KEY>"));
+        amazonRDS = AmazonRDSClientBuilder.standard().withCredentials(credentials)
+                .withRegion(Regions.AP_SOUTHEAST_2).build();
+        Properties prop = new Properties();
+        InputStream input = AWSRDSService.class.getClassLoader().getResourceAsStream("db.properties");
+        prop.load(input);
+        db_username = prop.getProperty("db_username");
+        db_password = prop.getProperty("db_password");
+        db_database = prop.getProperty("db_database");
+    }
+
+    public AWSRDSService(AmazonRDS amazonRDS){
+        this.amazonRDS = amazonRDS;
+    }
+
+    /**
+     * create the RDS instance.
+     * After instance creation, update the db_hostname with endpoint in db.properties.
+     * */
+
+    public String launchInstance() {
+
+        String identifier = "";
+        CreateDBInstanceRequest request = new CreateDBInstanceRequest();
+        // RDS instance name
+        request.setDBInstanceIdentifier("Sydney");
+        request.setEngine("postgres");
+        request.setMultiAZ(false);
+        request.setMasterUsername(db_username);
+        request.setMasterUserPassword(db_password);
+        request.setDBName(db_database);
+        request.setStorageType("gp2");
+        request.setAllocatedStorage(10);
+
+        DBInstance instance = amazonRDS.createDBInstance(request);
+
+        // Information about the new RDS instance
+        identifier = instance.getDBInstanceIdentifier();
+        String status = instance.getDBInstanceStatus();
+        Endpoint endpoint = instance.getEndpoint();
+        String endpoint_url = "Endpoint URL not available yet.";
+        if (endpoint != null) {
+            endpoint_url = endpoint.toString();
+        }
+        logger.info(identifier + "\t" + status);
+        logger.info(endpoint_url);
+
+        return identifier;
+
+    }
+
+    // Describe DB instances
+    public void listInstances() {
+        DescribeDBInstancesResult result = amazonRDS.describeDBInstances();
+        List<DBInstance> instances = result.getDBInstances();
+        for (DBInstance instance : instances) {
+            // Information about each RDS instance
+            String identifier = instance.getDBInstanceIdentifier();
+            String engine = instance.getEngine();
+            String status = instance.getDBInstanceStatus();
+            Endpoint endpoint = instance.getEndpoint();
+            String endpoint_url = "Endpoint URL not available yet.";
+            if (endpoint != null) {
+                endpoint_url = endpoint.toString();
+            }
+            logger.info(identifier + "\t" + engine + "\t" + status);
+            logger.info("\t" + endpoint_url);
+        }
+
+    }
+
+    //Delete RDS instance
+    public void terminateInstance(String identifier) {
+
+        DeleteDBInstanceRequest request = new DeleteDBInstanceRequest();
+        request.setDBInstanceIdentifier(identifier);
+        request.setSkipFinalSnapshot(true);
+
+        // Delete the RDS instance
+        DBInstance instance = amazonRDS.deleteDBInstance(request);
+
+        // Information about the RDS instance being deleted
+        String status = instance.getDBInstanceStatus();
+        Endpoint endpoint = instance.getEndpoint();
+        String endpoint_url = "Endpoint URL not available yet.";
+        if (endpoint != null) {
+            endpoint_url = endpoint.toString();
+        }
+
+        logger.info(identifier + "\t" + status);
+        logger.info(endpoint_url);
+
+    }
+
+
+    public void runJdbcTests() throws SQLException, IOException {
+
+        // Getting database properties from db.properties
+        Properties prop = new Properties();
+        InputStream input = AWSRDSService.class.getClassLoader().getResourceAsStream("db.properties");
+        prop.load(input);
+        db_hostname = prop.getProperty("db_hostname");
+        String jdbc_url = "jdbc:postgresql://" + db_hostname + ":5432/" + db_database;
+
+        // Create a connection using the JDBC driver
+        try (Connection conn = DriverManager.getConnection(jdbc_url, db_username, db_password)) {
+
+            // Create the test table if not exists
+            Statement statement = conn.createStatement();
+            String sql = "CREATE TABLE IF NOT EXISTS jdbc_test (id SERIAL PRIMARY KEY, content VARCHAR(80))";
+            statement.executeUpdate(sql);
+
+            // Do some INSERT
+            PreparedStatement preparedStatement = conn.prepareStatement("INSERT INTO jdbc_test (content) VALUES (?)");
+            String content = "" + UUID.randomUUID();
+            preparedStatement.setString(1, content);
+            preparedStatement.executeUpdate();
+            logger.info("INSERT: " + content);
+
+            // Do some SELECT
+            sql = "SELECT  * FROM jdbc_test";
+            ResultSet resultSet = statement.executeQuery(sql);
+            while (resultSet.next()) {
+                String count = resultSet.getString("content");
+                logger.info("Total Records: " + count);
+            }
+        }
+
+
+    }
+
+    public static void main(String[] args) throws IOException, SQLException {
+        AWSRDSService awsrdsService = new AWSRDSService();
+
+        String instanceName = awsrdsService.launchInstance();
+
+        //Add some wait for instance creation.
+
+        awsrdsService.listInstances();
+
+        awsrdsService.runJdbcTests();
+
+        awsrdsService.terminateInstance(instanceName);
+    }
+}

aws/src/main/java/com/baeldung/s3/AWSS3Service.java

@@ -0,0 +1,87 @@
+package com.baeldung.s3;
+
+import java.io.File;
+import java.util.List;
+
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3Client;
+import com.amazonaws.services.s3.model.Bucket;
+import com.amazonaws.services.s3.model.CopyObjectResult;
+import com.amazonaws.services.s3.model.DeleteObjectsRequest;
+import com.amazonaws.services.s3.model.DeleteObjectsResult;
+import com.amazonaws.services.s3.model.ObjectListing;
+import com.amazonaws.services.s3.model.PutObjectResult;
+import com.amazonaws.services.s3.model.S3Object;
+
+public class AWSS3Service {
+    private final AmazonS3 s3client;
+
+    public AWSS3Service() { 
+        this(new AmazonS3Client() {
+        }); 
+    } 
+    
+    public AWSS3Service(AmazonS3 s3client) {
+        this.s3client = s3client;
+    }
+    
+    //is bucket exist?
+    public boolean doesBucketExist(String bucketName) { 
+        return s3client.doesBucketExist(bucketName); 
+    } 
+    
+    //create a bucket
+    public Bucket createBucket(String bucketName) { 
+        return s3client.createBucket(bucketName); 
+    } 
+
+    //list all buckets
+    public List<Bucket> listBuckets() { 
+        return s3client.listBuckets(); 
+    }
+
+    //delete a bucket
+    public void deleteBucket(String bucketName) { 
+        s3client.deleteBucket(bucketName); 
+    }  
+    
+    //uploading object
+    public PutObjectResult putObject(String bucketName, String key, File file) {
+        return s3client.putObject(bucketName, key, file);
+    }
+    
+    //listing objects
+    public ObjectListing listObjects(String bucketName) {
+        return s3client.listObjects(bucketName);
+    }
+    
+    //get an object
+    public S3Object getObject(String bucketName, String objectKey) {
+        return s3client.getObject(bucketName, objectKey);
+    } 
+    
+    //copying an object
+    public CopyObjectResult copyObject(
+      String sourceBucketName,
+      String sourceKey,
+      String destinationBucketName,
+      String destinationKey
+    ) {
+        return s3client.copyObject(
+          sourceBucketName, 
+          sourceKey, 
+          destinationBucketName, 
+          destinationKey
+        );
+    }
+    
+    //deleting an object
+    public void deleteObject(String bucketName, String objectKey) {
+        s3client.deleteObject(bucketName, objectKey);
+    }
+    
+    //deleting multiple Objects
+    public DeleteObjectsResult deleteObjects(DeleteObjectsRequest delObjReq) {
+        return s3client.deleteObjects(delObjReq);
+    }
+}

aws/src/main/java/com/baeldung/s3/MultipartUpload.java

@@ -0,0 +1,56 @@
+package com.baeldung.s3;
+
+import com.amazonaws.AmazonClientException;
+import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
+import com.amazonaws.event.ProgressListener;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3ClientBuilder;
+import com.amazonaws.services.s3.model.PutObjectRequest;
+import com.amazonaws.services.s3.transfer.TransferManager;
+import com.amazonaws.services.s3.transfer.TransferManagerBuilder;
+import com.amazonaws.services.s3.transfer.Upload;
+
+import java.io.File;
+import java.util.concurrent.Executors;
+
+public class MultipartUpload {
+
+    public static void main(String[] args) throws Exception {
+        String existingBucketName = "baeldung-bucket";
+        String keyName = "my-picture.jpg";
+        String filePath = "documents/my-picture.jpg";
+
+        AmazonS3 amazonS3 = AmazonS3ClientBuilder
+                .standard()
+                .withCredentials(new DefaultAWSCredentialsProviderChain())
+                .withRegion(Regions.DEFAULT_REGION)
+                .build();
+
+        int maxUploadThreads = 5;
+
+        TransferManager tm = TransferManagerBuilder
+                .standard()
+                .withS3Client(amazonS3)
+                .withMultipartUploadThreshold((long) (5 * 1024 * 1024))
+                .withExecutorFactory(() -> Executors.newFixedThreadPool(maxUploadThreads))
+                .build();
+
+        ProgressListener progressListener =
+                progressEvent -> System.out.println("Transferred bytes: " + progressEvent.getBytesTransferred());
+
+        PutObjectRequest request = new PutObjectRequest(existingBucketName, keyName, new File(filePath));
+
+        request.setGeneralProgressListener(progressListener);
+
+        Upload upload = tm.upload(request);
+
+        try {
+            upload.waitForCompletion();
+            System.out.println("Upload complete.");
+        } catch (AmazonClientException e) {
+            System.out.println("Error occurred while uploading file");
+            e.printStackTrace();
+        }
+    }
+}

aws/src/main/java/com/baeldung/s3/S3Application.java

@@ -0,0 +1,101 @@
+package com.baeldung.s3;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.apache.commons.io.FileUtils;
+
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3ClientBuilder;
+import com.amazonaws.services.s3.model.Bucket;
+import com.amazonaws.services.s3.model.DeleteObjectsRequest;
+import com.amazonaws.services.s3.model.ObjectListing;
+import com.amazonaws.services.s3.model.S3Object;
+import com.amazonaws.services.s3.model.S3ObjectInputStream;
+import com.amazonaws.services.s3.model.S3ObjectSummary;
+
+public class S3Application {
+
+    private static final AWSCredentials credentials;
+    private static String bucketName;  
+
+    static {
+        //put your accesskey and secretkey here
+        credentials = new BasicAWSCredentials(
+          "<AWS accesskey>", 
+          "<AWS secretkey>"
+        );
+    }
+    
+    public static void main(String[] args) throws IOException {
+        //set-up the client
+        AmazonS3 s3client = AmazonS3ClientBuilder
+          .standard()
+          .withCredentials(new AWSStaticCredentialsProvider(credentials))
+          .withRegion(Regions.US_EAST_2)
+          .build();
+        
+        AWSS3Service awsService = new AWSS3Service(s3client);
+
+        bucketName = "baeldung-bucket";
+
+        //creating a bucket
+        if(awsService.doesBucketExist(bucketName)) {
+            System.out.println("Bucket name is not available."
+              + " Try again with a different Bucket name.");
+            return;
+        }
+        awsService.createBucket(bucketName);
+        
+        //list all the buckets
+        for(Bucket s : awsService.listBuckets() ) {
+            System.out.println(s.getName());
+        }
+        
+        //deleting bucket
+        awsService.deleteBucket("baeldung-bucket-test2");
+        
+        //uploading object
+        awsService.putObject(
+          bucketName, 
+          "Document/hello.txt",
+          new File("/Users/user/Document/hello.txt")
+        );
+
+        //listing objects
+        ObjectListing objectListing = awsService.listObjects(bucketName);
+        for(S3ObjectSummary os : objectListing.getObjectSummaries()) {
+            System.out.println(os.getKey());
+        }
+
+        //downloading an object
+        S3Object s3object = awsService.getObject(bucketName, "Document/hello.txt");
+        S3ObjectInputStream inputStream = s3object.getObjectContent();
+        FileUtils.copyInputStreamToFile(inputStream, new File("/Users/user/Desktop/hello.txt"));
+        
+        //copying an object
+        awsService.copyObject(
+          "baeldung-bucket", 
+          "picture/pic.png", 
+          "baeldung-bucket2", 
+          "Document/picture.png"
+        );
+        
+        //deleting an object
+        awsService.deleteObject(bucketName, "Document/hello.txt");
+
+        //deleting multiple objects
+        String objkeyArr[] = {
+          "Document/hello2.txt", 
+          "Document/picture.png"
+        };
+        
+        DeleteObjectsRequest delObjReq = new DeleteObjectsRequest("baeldung-bucket")
+          .withKeys(objkeyArr);
+        awsService.deleteObjects(delObjReq);
+    }
+}

aws/src/main/java/com/baeldung/sqs/SQSApplication.java

@@ -0,0 +1,146 @@
+package com.baeldung.sqs;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.sqs.AmazonSQSClientBuilder;
+import com.amazonaws.services.sqs.model.CreateQueueRequest;
+import com.amazonaws.services.sqs.model.DeleteMessageRequest;
+import com.amazonaws.services.sqs.model.GetQueueAttributesRequest;
+import com.amazonaws.services.sqs.model.GetQueueAttributesResult;
+import com.amazonaws.services.sqs.model.MessageAttributeValue;
+import com.amazonaws.services.sqs.model.ReceiveMessageRequest;
+import com.amazonaws.services.sqs.model.SendMessageBatchRequest;
+import com.amazonaws.services.sqs.model.SendMessageRequest;
+import com.amazonaws.services.sqs.model.SetQueueAttributesRequest;
+import com.amazonaws.services.sqs.model.SendMessageBatchRequestEntry;
+import com.amazonaws.services.sqs.model.Message;
+import com.amazonaws.services.sqs.AmazonSQS;
+
+public class SQSApplication {
+
+    private static final AWSCredentials credentials;
+
+    static {
+        // put your accesskey and secretkey here
+        credentials = new BasicAWSCredentials(
+            "<AWS accesskey>", 
+            "<AWS secretkey>"
+        );
+    }
+
+    public static void main(String[] args) {
+
+        // Set up the client
+        AmazonSQS sqs = AmazonSQSClientBuilder.standard()
+            .withCredentials(new AWSStaticCredentialsProvider(credentials))
+            .withRegion(Regions.US_EAST_1)
+            .build();
+
+        // Create a standard queue
+
+        CreateQueueRequest createStandardQueueRequest = new CreateQueueRequest("baeldung-queue");
+        String standardQueueUrl = sqs.createQueue(createStandardQueueRequest)
+            .getQueueUrl();
+
+        System.out.println(standardQueueUrl);
+
+        // Create a fifo queue
+
+        Map<String, String> queueAttributes = new HashMap<String, String>();
+        queueAttributes.put("FifoQueue", "true");
+        queueAttributes.put("ContentBasedDeduplication", "true");
+
+        CreateQueueRequest createFifoQueueRequest = new CreateQueueRequest("baeldung-queue.fifo").withAttributes(queueAttributes);
+        String fifoQueueUrl = sqs.createQueue(createFifoQueueRequest)
+            .getQueueUrl();
+
+        System.out.println(fifoQueueUrl);
+
+        // Set up a dead letter queue
+
+        String deadLetterQueueUrl = sqs.createQueue("baeldung-dead-letter-queue")
+            .getQueueUrl();
+
+        GetQueueAttributesResult deadLetterQueueAttributes = sqs.getQueueAttributes(new GetQueueAttributesRequest(deadLetterQueueUrl).withAttributeNames("QueueArn"));
+
+        String deadLetterQueueARN = deadLetterQueueAttributes.getAttributes()
+            .get("QueueArn");
+
+        SetQueueAttributesRequest queueAttributesRequest = new SetQueueAttributesRequest().withQueueUrl(standardQueueUrl)
+            .addAttributesEntry("RedrivePolicy", "{\"maxReceiveCount\":\"2\", " + "\"deadLetterTargetArn\":\"" + deadLetterQueueARN + "\"}");
+
+        sqs.setQueueAttributes(queueAttributesRequest);
+
+        // Send a message to a standard queue
+
+        Map<String, MessageAttributeValue> messageAttributes = new HashMap<>();
+
+        messageAttributes.put("AttributeOne", new MessageAttributeValue().withStringValue("This is an attribute")
+            .withDataType("String"));
+
+        SendMessageRequest sendMessageStandardQueue = new SendMessageRequest().withQueueUrl(standardQueueUrl)
+            .withMessageBody("A simple message.")
+            .withDelaySeconds(30) // Message will arrive in the queue after 30 seconds. We can use this only in standard queues
+            .withMessageAttributes(messageAttributes);
+
+        sqs.sendMessage(sendMessageStandardQueue);
+
+        // Send a message to a fifo queue
+
+        SendMessageRequest sendMessageFifoQueue = new SendMessageRequest().withQueueUrl(fifoQueueUrl)
+            .withMessageBody("FIFO Queue")
+            .withMessageGroupId("baeldung-group-1")
+            .withMessageAttributes(messageAttributes);
+
+        sqs.sendMessage(sendMessageFifoQueue);
+
+        // Send multiple messages
+
+        List<SendMessageBatchRequestEntry> messageEntries = new ArrayList<>();
+        messageEntries.add(new SendMessageBatchRequestEntry().withId("id-1")
+            .withMessageBody("batch-1")
+            .withMessageGroupId("baeldung-group-1"));
+        messageEntries.add(new SendMessageBatchRequestEntry().withId("id-2")
+            .withMessageBody("batch-2")
+            .withMessageGroupId("baeldung-group-1"));
+
+        SendMessageBatchRequest sendMessageBatchRequest = new SendMessageBatchRequest(fifoQueueUrl, messageEntries);
+        sqs.sendMessageBatch(sendMessageBatchRequest);
+
+        // Read a message from a queue
+
+        ReceiveMessageRequest receiveMessageRequest = new ReceiveMessageRequest(fifoQueueUrl).withWaitTimeSeconds(10) // Long polling;
+            .withMaxNumberOfMessages(1); // Max is 10
+
+        List<Message> sqsMessages = sqs.receiveMessage(receiveMessageRequest)
+            .getMessages();
+
+        sqsMessages.get(0)
+            .getAttributes();
+        sqsMessages.get(0)
+            .getBody();
+
+        // Delete a message from a queue
+
+        sqs.deleteMessage(new DeleteMessageRequest().withQueueUrl(fifoQueueUrl)
+            .withReceiptHandle(sqsMessages.get(0)
+                .getReceiptHandle()));
+
+        // Monitoring
+        GetQueueAttributesRequest getQueueAttributesRequest = new GetQueueAttributesRequest(standardQueueUrl).withAttributeNames("All");
+        GetQueueAttributesResult getQueueAttributesResult = sqs.getQueueAttributes(getQueueAttributesRequest);
+        System.out.println(String.format("The number of messages on the queue: %s", getQueueAttributesResult.getAttributes()
+            .get("ApproximateNumberOfMessages")));
+        System.out.println(String.format("The number of messages in flight: %s", getQueueAttributesResult.getAttributes()
+            .get("ApproximateNumberOfMessagesNotVisible")));
+
+    }
+
+}

aws/src/main/resources/db.properties

@@ -0,0 +1,4 @@
+db_hostname=<RDS EndPoint>
+db_username=username
+db_password=password
+db_database=mydb

aws/src/main/resources/logback.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>

aws/src/test/java/com/baeldung/dynamodb/ProductInfoRepositoryIntegrationTest.java

@@ -0,0 +1,120 @@
+package com.baeldung.dynamodb;
+
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
+import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
+import com.amazonaws.services.dynamodbv2.model.CreateTableRequest;
+import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput;
+import com.amazonaws.services.dynamodbv2.model.ResourceInUseException;
+import com.baeldung.dynamodb.entity.ProductInfo;
+import com.baeldung.dynamodb.repository.ProductInfoRepository;
+import com.baeldung.dynamodb.rule.LocalDbCreationRule;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.ClassRule;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.List;
+import java.util.Optional;
+import java.util.Properties;
+
+import static org.hamcrest.Matchers.greaterThan;
+import static org.hamcrest.core.Is.is;
+import static org.hamcrest.core.IsEqual.equalTo;
+import static org.junit.Assert.assertThat;
+
+public class ProductInfoRepositoryIntegrationTest {
+
+    @ClassRule
+    public static LocalDbCreationRule dynamoDB = new LocalDbCreationRule();
+
+    private static DynamoDBMapper dynamoDBMapper;
+    private static AmazonDynamoDB amazonDynamoDB;
+
+    private ProductInfoRepository repository;
+
+    private static final String DYNAMODB_ENDPOINT = "amazon.dynamodb.endpoint";
+    private static final String AWS_ACCESSKEY = "amazon.aws.accesskey";
+    private static final String AWS_SECRETKEY = "amazon.aws.secretkey";
+
+    private static final String EXPECTED_COST = "20";
+    private static final String EXPECTED_PRICE = "50";
+
+    @BeforeClass
+    public static void setupClass() {
+        Properties testProperties = loadFromFileInClasspath("test.properties")
+                .filter(properties -> !isEmpty(properties.getProperty(AWS_ACCESSKEY)))
+                .filter(properties -> !isEmpty(properties.getProperty(AWS_SECRETKEY)))
+                .filter(properties -> !isEmpty(properties.getProperty(DYNAMODB_ENDPOINT)))
+                .orElseThrow(() -> new RuntimeException("Unable to get all of the required test property values"));
+
+        String amazonAWSAccessKey = testProperties.getProperty(AWS_ACCESSKEY);
+        String amazonAWSSecretKey = testProperties.getProperty(AWS_SECRETKEY);
+        String amazonDynamoDBEndpoint = testProperties.getProperty(DYNAMODB_ENDPOINT);
+
+        amazonDynamoDB = new AmazonDynamoDBClient(new BasicAWSCredentials(amazonAWSAccessKey, amazonAWSSecretKey));
+        amazonDynamoDB.setEndpoint(amazonDynamoDBEndpoint);
+        dynamoDBMapper = new DynamoDBMapper(amazonDynamoDB);
+    }
+
+    @Before
+    public void setup() {
+        try {
+            repository = new ProductInfoRepository();
+            repository.setMapper(dynamoDBMapper);
+
+            CreateTableRequest tableRequest = dynamoDBMapper.generateCreateTableRequest(ProductInfo.class);
+
+            tableRequest.setProvisionedThroughput(new ProvisionedThroughput(1L, 1L));
+
+            amazonDynamoDB.createTable(tableRequest);
+        } catch (ResourceInUseException e) {
+            // Do nothing, table already created
+        }
+
+        // TODO How to handle different environments. i.e. AVOID deleting all entries in ProductInfo on table
+        dynamoDBMapper.batchDelete((List<ProductInfo>) repository.findAll());
+    }
+
+    @Test
+    public void givenItemWithExpectedCost_whenRunFindAll_thenItemIsFound() {
+
+        ProductInfo productInfo = new ProductInfo(EXPECTED_COST, EXPECTED_PRICE);
+        repository.save(productInfo);
+
+        List<ProductInfo> result = (List<ProductInfo>) repository.findAll();
+        assertThat(result.size(), is(greaterThan(0)));
+        assertThat(result.get(0).getCost(), is(equalTo(EXPECTED_COST)));
+    }
+
+    private static boolean isEmpty(String inputString) {
+        return inputString == null || "".equals(inputString);
+    }
+
+    private static Optional<Properties> loadFromFileInClasspath(String fileName) {
+        InputStream stream = null;
+        try {
+            Properties config = new Properties();
+            Path configLocation = Paths.get(ClassLoader.getSystemResource(fileName).toURI());
+            stream = Files.newInputStream(configLocation);
+            config.load(stream);
+            return Optional.of(config);
+        } catch (Exception e) {
+            return Optional.empty();
+        } finally {
+            if (stream != null) {
+                try {
+                    stream.close();
+                } catch (IOException e) {
+                }
+            }
+        }
+    }
+
+}

aws/src/test/java/com/baeldung/dynamodb/rule/LocalDbCreationRule.java

@@ -0,0 +1,35 @@
+package com.baeldung.dynamodb.rule;
+
+import com.amazonaws.services.dynamodbv2.local.main.ServerRunner;
+import com.amazonaws.services.dynamodbv2.local.server.DynamoDBProxyServer;
+import org.junit.rules.ExternalResource;
+
+public class LocalDbCreationRule extends ExternalResource {
+
+    protected DynamoDBProxyServer server;
+
+    public LocalDbCreationRule() {
+        System.setProperty("sqlite4java.library.path", "native-libs");
+    }
+
+    @Override
+    protected void before() throws Exception {
+        String port = "8000";
+        this.server = ServerRunner.createServerFromCommandLineArgs(new String[]{"-inMemory", "-port", port});
+        server.start();
+    }
+
+    @Override
+    protected void after() {
+        this.stopUnchecked(server);
+    }
+
+    protected void stopUnchecked(DynamoDBProxyServer dynamoDbServer) {
+        try {
+            dynamoDbServer.stop();
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}

aws/src/test/java/com/baeldung/jets3t/JetS3tLiveTest.java

@@ -0,0 +1,351 @@
+package com.baeldung.jets3t;
+
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.jets3t.service.S3Service;
+import org.jets3t.service.ServiceException;
+import org.jets3t.service.impl.rest.httpclient.RestS3Service;
+import org.jets3t.service.model.S3Bucket;
+import org.jets3t.service.model.S3Object;
+import org.jets3t.service.model.StorageObject;
+import org.jets3t.service.security.AWSCredentials;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
+import static junit.framework.TestCase.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+public class JetS3tLiveTest {
+
+    private Log log = LogFactory.getLog(JetS3tLiveTest.class);
+
+    private static final String BucketName = "baeldung-barfoo";
+    private static final String TestString = "test string";
+    private static final String TestStringName = "string object";
+    private static final String TgtBucket = "baeldung-tgtbucket";
+
+    private static S3Service s3Service;
+
+    @BeforeClass
+    public static void connectS3() throws Exception {
+
+        // Replace with your keys
+        String awsAccessKey = "your access key";
+        String awsSecretKey = "your secret key";
+
+        // Create credentials
+        AWSCredentials awsCredentials = new AWSCredentials(awsAccessKey, awsSecretKey);
+
+        // Create service
+        s3Service = new RestS3Service(awsCredentials);
+    }
+
+    @Test
+    public void givenCreate_AndDeleteBucket_CountGoesUpThenDown() throws Exception {
+
+        // List buckets, get a count
+        S3Bucket[] myBuckets = s3Service.listAllBuckets();
+        int count = Arrays.stream(myBuckets).map(S3Bucket::getName).collect(Collectors.toList()).size();
+
+        // Create a bucket
+        S3Bucket bucket = createBucket();
+        assertNotNull(bucket);
+
+        // List again
+        myBuckets = s3Service.listAllBuckets();
+        int newCount = Arrays.stream(myBuckets).map(S3Bucket::getName).collect(Collectors.toList()).size();
+
+        // We should have one more
+        assertEquals((count + 1), newCount);
+
+        // Delete so next test doesn't fail
+        deleteBucket();
+
+        // Check the count again, just for laughs
+        myBuckets = s3Service.listAllBuckets();
+        newCount = Arrays.stream(myBuckets).map(S3Bucket::getName).collect(Collectors.toList()).size();
+        assertEquals(count, newCount);
+
+    }
+
+    private S3Bucket createBucket() throws Exception {
+        S3Bucket bucket = s3Service.createBucket(BucketName);
+        log.info(bucket);
+        return bucket;
+    }
+
+
+    private void deleteBucket() throws ServiceException {
+        s3Service.deleteBucket(BucketName);
+    }
+
+    @Test
+    public void givenString_Uploaded_StringInfoIsAvailable() throws Exception {
+
+        // Create a bucket
+        S3Bucket bucket = createBucket();
+        assertNotNull(bucket);
+
+        // Upload a string
+        uploadStringData();
+
+        // Get the details
+        StorageObject objectDetailsOnly = s3Service.getObjectDetails(BucketName, TestStringName);
+        log.info("Content type: " + objectDetailsOnly.getContentType() + " length: " + objectDetailsOnly.getContentLength());
+
+        // Delete it
+        deleteObject(TestStringName);
+
+        // For next test
+        deleteBucket();
+    }
+
+    private void uploadStringData() throws Exception {
+        S3Object stringObject = new S3Object(TestStringName, TestString);
+        s3Service.putObject(BucketName, stringObject);
+        log.info("Content type:" + stringObject.getContentType());
+    }
+
+    private void deleteObject(String objectName) throws ServiceException {
+        s3Service.deleteObject(BucketName, objectName);
+    }
+
+    @Test
+    public void givenStringUploaded_StringIsDownloaded() throws Exception {
+
+        // Get a bucket
+        S3Bucket bucket = createBucket();
+        assertNotNull(bucket);
+
+        uploadStringData();
+
+        // Download
+        S3Object stringObject = s3Service.getObject(BucketName, TestStringName);
+
+        // Process stream into a string
+        String downloadedString = new BufferedReader(new InputStreamReader(stringObject.getDataInputStream())).lines().collect(Collectors.joining("\n"));
+
+        // Verify
+        assertTrue(TestString.equals(downloadedString));
+
+
+        // Clean up for next test
+        deleteObject(TestStringName);
+        deleteBucket();
+    }
+
+    @Test
+    public void givenBinaryFileUploaded_FileIsDownloaded() throws Exception {
+
+        // get a bucket
+        S3Bucket bucket = createBucket();
+        assertNotNull(bucket);
+
+        // Put a binary file
+        S3Object fileObject = new S3Object(new File("src/test/resources/test.jpg"));
+        s3Service.putObject(BucketName, fileObject);
+
+        // Print info about type and name
+        log.info("Content type:" + fileObject.getContentType());
+        log.info("File object name is " + fileObject.getName());
+
+        // Download
+        S3Object newFileObject = s3Service.getObject(BucketName, "test.jpg");
+
+        // Save to a different name
+        File newFile = new File("src/test/resources/newtest.jpg");
+        Files.copy(newFileObject.getDataInputStream(), newFile.toPath(), REPLACE_EXISTING);
+
+
+        // Get hashes and compare
+        String origMD5 = getFileMD5("src/test/resources/test.jpg");
+        String newMD5 = getFileMD5("src/test/resources/newtest.jpg");
+        assertTrue(origMD5.equals(newMD5));
+
+        // Clean up
+        deleteObject("test.jpg");
+        deleteBucket();
+    }
+
+    // Get MD5 hash for a file
+    private String getFileMD5(String filename) throws IOException {
+        try (FileInputStream fis = new FileInputStream(new File(filename))) {
+            return DigestUtils.md5Hex(fis);
+        }
+    }
+
+
+
+    @Test
+    public void givenStreamDataUploaded_StreamDataIsDownloaded() throws Exception {
+
+        // get a bucket
+        S3Bucket bucket = createBucket();
+        assertNotNull(bucket);
+
+        ArrayList<Integer> numbers = new ArrayList<>();
+        numbers.add(2);
+        numbers.add(3);
+        numbers.add(5);
+        numbers.add(7);
+
+        // Serialize ArrayList
+        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
+        ObjectOutputStream objectOutputStream = new ObjectOutputStream(bytes);
+        objectOutputStream.writeObject(numbers);
+
+        // Wrap bytes
+        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes.toByteArray());
+
+        // Create and populate object
+        S3Object streamObject = new S3Object("stream");
+        streamObject.setDataInputStream(byteArrayInputStream);
+        streamObject.setContentLength(byteArrayInputStream.available());
+        streamObject.setContentType("binary/octet-stream");
+
+        // Put it
+        s3Service.putObject(BucketName, streamObject);
+
+        // Get it
+        S3Object newStreamObject = s3Service.getObject(BucketName, "stream");
+
+        // Convert back to ArrayList
+        ObjectInputStream objectInputStream = new ObjectInputStream(newStreamObject.getDataInputStream());
+        ArrayList<Integer> newNumbers = (ArrayList<Integer>)objectInputStream.readObject();
+
+        assertEquals(2, (int)newNumbers.get(0));
+        assertEquals(3, (int)newNumbers.get(1));
+        assertEquals(5, (int)newNumbers.get(2));
+        assertEquals(7, (int)newNumbers.get(3));
+
+        // Clean up
+        deleteObject("stream");
+        deleteBucket();
+    }
+
+    @Test
+    public void whenFileCopied_CopyIsSame() throws Exception {
+
+        // get a bucket
+        S3Bucket bucket = createBucket();
+        assertNotNull(bucket);
+
+        // Put a binary file
+        S3Object fileObject = new S3Object(new File("src/test/resources/test.jpg"));
+        s3Service.putObject(BucketName, fileObject);
+
+
+        // Copy it
+        S3Object targetObject = new S3Object("testcopy.jpg");
+        s3Service.copyObject(BucketName, "test.jpg", BucketName, targetObject, false);
+
+
+        // Download
+        S3Object newFileObject = s3Service.getObject(BucketName, "testcopy.jpg");
+
+        // Save to a different name
+        File newFile = new File("src/test/resources/testcopy.jpg");
+        Files.copy(newFileObject.getDataInputStream(), newFile.toPath(), REPLACE_EXISTING);
+
+
+        // Get hashes and compare
+        String origMD5 = getFileMD5("src/test/resources/test.jpg");
+        String newMD5 = getFileMD5("src/test/resources/testcopy.jpg");
+        assertTrue(origMD5.equals(newMD5));
+
+        // Clean up
+        deleteObject("test.jpg");
+        deleteObject("testcopy.jpg");
+        deleteBucket();
+
+    }
+
+
+    @Test
+    public void whenFileRenamed_NewNameIsSame() throws Exception {
+
+        // get a bucket
+        S3Bucket bucket = createBucket();
+        assertNotNull(bucket);
+
+        // Put a binary file
+        S3Object fileObject = new S3Object(new File("src/test/resources/test.jpg"));
+        s3Service.putObject(BucketName, fileObject);
+
+
+        // Copy it
+        s3Service.renameObject(BucketName, "test.jpg", new S3Object("spidey.jpg"));
+
+
+        // Download
+        S3Object newFileObject = s3Service.getObject(BucketName, "spidey.jpg");
+
+        // Save to a different name
+        File newFile = new File("src/test/resources/spidey.jpg");
+        Files.copy(newFileObject.getDataInputStream(), newFile.toPath(), REPLACE_EXISTING);
+
+
+        // Get hashes and compare
+        String origMD5 = getFileMD5("src/test/resources/test.jpg");
+        String newMD5 = getFileMD5("src/test/resources/spidey.jpg");
+        assertTrue(origMD5.equals(newMD5));
+
+        // Clean up
+        deleteObject("test.jpg");
+        deleteObject("spidey.jpg");
+        deleteBucket();
+
+    }
+
+    @Test
+    public void whenFileMoved_NewInstanceIsSame() throws Exception {
+
+        // get a bucket
+        S3Bucket bucket = createBucket();
+        assertNotNull(bucket);
+
+        // create another bucket
+        S3Bucket tgtBucket = s3Service.createBucket(TgtBucket);
+
+
+        // Put a binary file
+        S3Object fileObject = new S3Object(new File("src/test/resources/test.jpg"));
+        s3Service.putObject(BucketName, fileObject);
+
+
+        // Copy it
+        s3Service.moveObject(BucketName, "test.jpg", TgtBucket,
+            new S3Object("spidey.jpg"), false);
+
+
+        // Download
+        S3Object newFileObject = s3Service.getObject(TgtBucket, "spidey.jpg");
+
+        // Save to a different name
+        File newFile = new File("src/test/resources/spidey.jpg");
+        Files.copy(newFileObject.getDataInputStream(), newFile.toPath(), REPLACE_EXISTING);
+
+
+        // Get hashes and compare
+        String origMD5 = getFileMD5("src/test/resources/test.jpg");
+        String newMD5 = getFileMD5("src/test/resources/spidey.jpg");
+        assertTrue(origMD5.equals(newMD5));
+
+        // Clean up
+        deleteBucket();
+
+        s3Service.deleteObject(TgtBucket, "spidey.jpg");
+        s3Service.deleteBucket(TgtBucket);
+    }
+
+
+}

aws/src/test/java/com/baeldung/s3/AWSS3ServiceIntegrationTest.java

@@ -0,0 +1,113 @@
+package com.baeldung.s3;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.io.File;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.model.CopyObjectResult;
+import com.amazonaws.services.s3.model.DeleteObjectsRequest;
+import com.amazonaws.services.s3.model.DeleteObjectsResult;
+import com.amazonaws.services.s3.model.PutObjectResult; 
+
+public class AWSS3ServiceIntegrationTest {
+
+    private static final String BUCKET_NAME = "bucket_name"; 
+    private static final String KEY_NAME = "key_name"; 
+    private static final String BUCKET_NAME2 = "bucket_name2"; 
+    private static final String KEY_NAME2 = "key_name2"; 
+ 
+    private AmazonS3 s3; 
+    private AWSS3Service service; 
+ 
+    @Before 
+    public void setUp() { 
+        s3 = mock(AmazonS3.class); 
+        service = new AWSS3Service(s3); 
+    } 
+ 
+    @Test 
+    public void whenInitializingAWSS3Service_thenNotNull() { 
+        assertThat(new AWSS3Service()).isNotNull(); 
+    } 
+    
+    @Test 
+    public void whenVerifyingIfS3BucketExist_thenCorrect() { 
+        service.doesBucketExist(BUCKET_NAME); 
+        verify(s3).doesBucketExist(BUCKET_NAME); 
+    } 
+ 
+    @Test 
+    public void whenVerifyingCreationOfS3Bucket_thenCorrect() { 
+        service.createBucket(BUCKET_NAME); 
+        verify(s3).createBucket(BUCKET_NAME); 
+    } 
+ 
+    @Test 
+    public void whenVerifyingListBuckets_thenCorrect() { 
+        service.listBuckets(); 
+        verify(s3).listBuckets(); 
+    } 
+
+    @Test 
+    public void whenDeletingBucket_thenCorrect() { 
+        service.deleteBucket(BUCKET_NAME); 
+        verify(s3).deleteBucket(BUCKET_NAME); 
+    } 
+    
+    @Test 
+    public void whenVerifyingPutObject_thenCorrect() { 
+        File file = mock(File.class); 
+        PutObjectResult result = mock(PutObjectResult.class); 
+        when(s3.putObject(anyString(), anyString(), (File) any())).thenReturn(result); 
+ 
+        assertThat(service.putObject(BUCKET_NAME, KEY_NAME, file)).isEqualTo(result); 
+        verify(s3).putObject(BUCKET_NAME, KEY_NAME, file); 
+    }
+    
+    @Test 
+    public void whenVerifyingListObjects_thenCorrect() { 
+        service.listObjects(BUCKET_NAME); 
+        verify(s3).listObjects(BUCKET_NAME); 
+    } 
+    
+    @Test 
+    public void whenVerifyingGetObject_thenCorrect() { 
+        service.getObject(BUCKET_NAME, KEY_NAME); 
+        verify(s3).getObject(BUCKET_NAME, KEY_NAME); 
+    } 
+    
+    @Test 
+    public void whenVerifyingCopyObject_thenCorrect() { 
+        CopyObjectResult result = mock(CopyObjectResult.class); 
+        when(s3.copyObject(anyString(), anyString(), anyString(), anyString())).thenReturn(result); 
+ 
+        assertThat(service.copyObject(BUCKET_NAME, KEY_NAME, BUCKET_NAME2, KEY_NAME2)).isEqualTo(result); 
+        verify(s3).copyObject(BUCKET_NAME, KEY_NAME, BUCKET_NAME2, KEY_NAME2);
+    } 
+    
+    @Test 
+    public void whenVerifyingDeleteObject_thenCorrect() { 
+        service.deleteObject(BUCKET_NAME, KEY_NAME); 
+        verify(s3).deleteObject(BUCKET_NAME, KEY_NAME); 
+    }
+    
+    @Test 
+    public void whenVerifyingDeleteObjects_thenCorrect() { 
+        DeleteObjectsRequest request = mock(DeleteObjectsRequest.class);
+        DeleteObjectsResult result = mock(DeleteObjectsResult.class);
+        when(s3.deleteObjects((DeleteObjectsRequest)any())).thenReturn(result); 
+        
+        assertThat(service.deleteObjects(request)).isEqualTo(result);
+        verify(s3).deleteObjects(request); 
+    }
+    
+}

aws/src/test/java/com/baeldung/s3/MultipartUploadLiveTest.java

@@ -0,0 +1,61 @@
+package com.baeldung.s3;
+
+import com.amazonaws.event.ProgressListener;
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.model.PutObjectRequest;
+import com.amazonaws.services.s3.model.PutObjectResult;
+import com.amazonaws.services.s3.transfer.TransferManager;
+import com.amazonaws.services.s3.transfer.TransferManagerBuilder;
+import com.amazonaws.services.s3.transfer.Upload;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.File;
+import java.util.concurrent.Executors;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+public class MultipartUploadLiveTest {
+
+    private static final String BUCKET_NAME = "bucket_name";
+    private static final String KEY_NAME = "picture.jpg";
+
+    private AmazonS3 amazonS3;
+    private TransferManager tm;
+    private ProgressListener progressListener;
+
+    @Before
+    public void setup() {
+        amazonS3 = mock(AmazonS3.class);
+        tm = TransferManagerBuilder
+                .standard()
+                .withS3Client(amazonS3)
+                .withMultipartUploadThreshold((long) (5 * 1024 * 1025))
+                .withExecutorFactory(() -> Executors.newFixedThreadPool(5))
+                .build();
+        progressListener =
+                progressEvent -> System.out.println("Transferred bytes: " + progressEvent.getBytesTransferred());
+    }
+
+    @Test
+    public void whenUploadingFileWithTransferManager_thenVerifyUploadRequested() {
+        File file = mock(File.class);
+        PutObjectResult s3Result = mock(PutObjectResult.class);
+
+        when(amazonS3.putObject(anyString(), anyString(), (File) any())).thenReturn(s3Result);
+        when(file.getName()).thenReturn(KEY_NAME);
+
+        PutObjectRequest request = new PutObjectRequest(BUCKET_NAME, KEY_NAME, file);
+        request.setGeneralProgressListener(progressListener);
+
+        Upload upload = tm.upload(request);
+
+        assertThat(upload).isNotNull();
+        verify(amazonS3).putObject(request);
+    }
+}

aws/src/test/resources/test.properties

@@ -0,0 +1,3 @@
+amazon.dynamodb.endpoint=http://localhost:8000/
+amazon.aws.accesskey=key
+amazon.aws.secretkey=key2