For Java-based Lambda functions, you can also use Visual Studio Code for development, testing, and deployments.

AWS Toolkit for Visual Studio Code provide similar capabilities.

You can follow the guide to run and debug Lambda functions directly from code which is applicable to multiple languages including Java.

Similar to IntelliJ, AWS Toolkit for Visual Studio Code provides additional capabilities for building serverless applications including:

• Invoke Remote Lambda functions
• Working with AWS Step Functions
• Working with EventBridge Schema
• Running and debugging local Amazon API Gateway resources