Get in DynamoDB Using Java (Guide w/ Code Examples)

You can get an item in DynamoDB using the GetItemRequest method. It requires the table name and they primary key of the table. An implementation of this method is shown below.

import com.amazonaws.services.dynamodbv2.AmazonDynamoDB;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClientBuilder;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import com.amazonaws.services.dynamodbv2.model.GetItemRequest;
import com.amazonaws.services.dynamodbv2.model.GetItemResult;

public class GetItemExample {

    public static void main(String[] args) {
        AmazonDynamoDB client = AmazonDynamoDBClientBuilder.defaultClient();

        Map<String, AttributeValue> key = new HashMap<>();
        key.put("id", new AttributeValue().withN("123"));

        GetItemRequest request = new GetItemRequest()
                .withTableName("MyTable")
                .withKey(key);

        GetItemResult result = client.getItem(request);
        System.out.println(result.getItem());
    }
}