After a module involved in research and development is imported into a project, it needs to depend on another module.
The module has not been developed well, so the developer has not deployed it to the private server, it needs to be installed locally, and the following error is reported during the install
No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
Just select jdk in window-->preferences-->java-->installed jres