Getting an item from the DynamoDB table using the AWS SDK for Java

Let's understand how to get an item from the DynamoDB table using the AWS SDK for Java.

Getting ready

To perform this operation, you can use the IDE of your choice.

How to do it…

Let's try to understand how to retrieve a stored item from the DynamoDB table using Java:

1. Create an instance of the DynamoDB class and initialize it with credentials:

   AmazonDynamoDBClient client = new AmazonDynamoDBClient(new ProfileCredentialsProvider());
   client.setRegion(Region.getRegion(Regions.US_EAST_1));
   DynamoDB dynamoDB = new DynamoDB(client);

2. Get the table by specifying the name:

   Table table = dynamoDB.getTable("productTable");

3. Invoke the GetItem request by specifying the primary key of the item:

   Item product = table.getItem(new PrimaryKey("id", 10, "type", "phone"));

   Here, we have a table with the composite hash and range keys, so we have to provide values for both keys.

How it works…...