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

You can use the PutItemRequest class offered by the DynamoDB SDK to put new items into DynamoDB.

The following code inserts an item into the table my-table with three attributes: a primary key attribute ("id") and two other attributes ("attribute1" and "attribute2"). The values for these attributes are specified in the AttributeValue objects

import software.amazon.awssdk.services.dynamodb.DynamoDbClient;
import software.amazon.awssdk.services.dynamodb.model.AttributeValue;
import software.amazon.awssdk.services.dynamodb.model.AttributeValue.*;
import software.amazon.awssdk.services.dynamodb.model.PutItemRequest;

import java.util.HashMap;
import java.util.Map;

public class InsertItem {
    public static void main(String[] args) {
        DynamoDbClient ddb = DynamoDbClient.create();

        String tableName = "my-table";

        Map<String, AttributeValue> item = new HashMap<>();
        item.put("id", AttributeValue.builder().s("12345").build());
        item.put("attribute1", AttributeValue.builder().s("value1").build());
        item.put("attribute2", AttributeValue.builder().s("value2").build());

        PutItemRequest request = PutItemRequest.builder()
            .tableName(tableName)
            .item(item)
            .build();

        ddb.putItem(request);
    }
}