Pass Cloudwatch Event Data to Lambda Function

There is a Java example here - https://github.com/awsdocs/aws-lambda-developer-guide/tree/main/sample-apps/java-events

This example shows how different types of events can be handled in lambda and Cloudwatch Events is one of the examples.

Note that Cloudwatch events has now been integrated into a service called Eventbridge

There is a good AWS workshop that provides good hands-on practice with Eventbridge over here - https://catalog.us-east-1.prod.workshops.aws/workshops/63320e83-6abc-493d-83d8-f822584fb3cb/en-US

This particular section https://catalog.us-east-1.prod.workshops.aws/workshops/63320e83-6abc-493d-83d8-f822584fb3cb/en-US/lambda in the above workshop shows lambda integration with Eventbridge

There is also a tutorial in the AWS documentation that shows how to integrate Lambda with Eventbridge over here - https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-run-lambda-schedule.html