must declare a named package eclipse because this compilation unit is associated to the named module

问题

I just downloaded eclipse for Java Yesterday but when I was trying to get make my first program, I kept on getting this error:

must declare a named package eclipse because this compilation unit is associated to the named module x. 

How do I fix this?

回答1:

Just delete module-info.java at your Project Explorer tab.

回答2:

The "delete module-info.java at your Project Explorer tab" answer is the easiest and most straightforward answer, but

for those who would want a little more understanding or control of what's happening, the following alternate methods may be desirable;

• make an ever so slightly more realistic application; com.YourCompany.etc or just com.HelloWorld (Project name: com.HelloWorld and class name: HelloWorld)

or

• when creating the java project; when in the Create Java Project dialog, don't choose Finish but Next, and deselect Create module-info.java file

来源：https://stackoverflow.com/questions/53033899/must-declare-a-named-package-eclipse-because-this-compilation-unit-is-associated