Code-Alongs

Code-Along 1: Create DynamoDB Table through Java Code

Learn how to programmatically create DynamoDB tables using the AWS SDK for Java.

What You'll Learn

In this code-along, you'll learn the fundamentals of creating DynamoDB tables programmatically using the AWS SDK for Java. This is an essential skill for applications that need to manage their own database infrastructure.

Key Concepts Covered:

• Setting up the AWS SDK for Java in your project
• Creating a DynamoDB client
• Defining table schemas with partition and sort keys
• Configuring throughput capacity for DynamoDB tables
• Managing table creation processes and handling responses
• Working with table creation waiting policies

Code Example Highlights:

// Creating a DynamoDB client
DynamoDbClient dynamoDbClient = DynamoDbClient.builder()
    .region(Region.US_WEST_2)
    .build();

// Defining the table schema
CreateTableRequest request = CreateTableRequest.builder()
    .attributeDefinitions(
        AttributeDefinition.builder()
            .attributeName("artist")
            .attributeType(ScalarAttributeType.S)
            .build(),
        AttributeDefinition.builder()
            .attributeName("songTitle")
            .attributeType(ScalarAttributeType.S)
            .build()
    )
    .keySchema(
        KeySchemaElement.builder()
            .attributeName("artist")
            .keyType(KeyType.HASH)
            .build(),
        KeySchemaElement.builder()
            .attributeName("songTitle")
            .keyType(KeyType.RANGE)
            .build()
    )
    .billingMode(BillingMode.PAY_PER_REQUEST)
    .tableName("Music")
    .build();

// Create the table
CreateTableResponse response = dynamoDbClient.createTable(request);
System.out.println("Table created: " + response.tableDescription().tableName());
                

By completing this code-along, you'll gain practical experience with DynamoDB table creation, which is a fundamental skill for working with AWS's NoSQL database service.

Code-Along 2: HTTP Methods and REST API Calls

Practice making HTTP requests to RESTful APIs using different HTTP methods (GET, POST, PUT, DELETE).

What You'll Learn

In this hands-on code-along, you'll learn how to make HTTP requests to RESTful APIs using the Java HttpClient. You'll practice working with different HTTP methods and handle responses appropriately.