The AWS Toolkit for Eclipse will reach end of life on May 31, 2023. For additional information, see the README.md
How to Access AWS Explorer
To display AWS Explorer, click the AWS icon on the toolbar, and select Show AWS Explorer View.

If the AWS icon is not visible on the toolbar, click the Window menu, and then click Open Perspective | Other. Click AWS Management from the list of Eclipse perspectives.
You can expand each node in AWS Explorer to view resources on AWS that are associated with your account. For example, if you click the white triangle to the left of the Amazon EC2 node, it will expand and display Amazon EC2 resources associated with your AWS account. The Toolkit for Eclipse uses the AWS account that you configured in the Set up AWS Credentials to determine which resources to display.

If you select any of the subnodes to Amazon EC2, Eclipse will open a view with detailed information about those resources. For example, double-clicking Instances opens a view that lists information about each of your Amazon EC2 instances such as its public DNS name, availability zone, and launch time.