The package com.sun is not accessible. Java in Eclipse. Classic Problem, but nothing works for me

Question

Im trying to use the HttpServer Class from com.sun package but i can't import it. It keeps saying: "The package com.sun is not accessible."

I've tried every solution i could find in other questions about this topic. I've added a rule to have access to it to my libraries. I changed my JDK to another installed JDK17. I don't know what to do anymore. It's for my college homework, so it would be cool to get it running.

Does someone have a clue?

my code problem:

the access rule:

my current used jdk:

Answer 1

You have a module-info.java so you are using Java modules. Consequently you need to say that you are using the jdk.httpserver module which contains com.sun.net.httpserver.HttpServer.

You do that by adding the line:

  requires jdk.httpserver;

to your module-info.java. So something like:

module modulename
{
  requires jdk.httpserver;
}

where modulename is the name of your module.

Alternatively delete the module-info.java file to stop using the module system.