What are common challenges faced by AWS Certified Java Developers when integrating Java applications with AWS services?

AWS Certified Java Developers often encounter challenges such as managing secure authentication and authorization, ensuring scalability across distributed systems, and optimizing resource usage to control costs. Integrating with services like AWS Lambda, S3, or DynamoDB requires a solid understanding of AWS SDKs for Java and best practices in cloud-native design. Additionally, developers must stay up to date with evolving AWS services and troubleshoot potential issues related to networking, permissions, and deployment pipelines in cloud environments.