Employee.java

public List<Employee> retrieveAll()
{
 DynamoDBMapper dynamoDBMapper = new DynamoDBMapper(dynamoDBClient);
 DynamoDBScanExpression dynamoDBScanExpression = new DynamoDBScanExpression();
 List<Employee> employeeList = dynamoDBMapper.scan(Employee.class, dynamoDBScanExpression);
 return employeeList;
}