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HelloWorld project not successful [message #1822053] Wed, 26 February 2020 11:17 Go to next message
Dieter Heußner is currently offline Dieter HeußnerFriend
Messages: 1
Registered: February 2020
Junior Member
I am a new user of Eclipse. Having successfully installed Eclipse (2019-12) on SuSE Linux with "Java1.8" preset, I followed the tutorial of the HelloWorld project by

    - opening the Java perspective
    - creating the HelloWorld project
    - creating the HelloWorld class including the statement "System.out.println("Hello World!");"
    - saving the project

When trying to run (run as) the project, the following error message came up:
Must declare a named package because this compilation unit is associated to the named module 'HelloWorld' /HelloWorld/src line 1 Java Problem


    When creating the project, a module "" was created automatically.
    There are no syntax errors in the source code of
    The online documentation is not up-to-date with the current Eclipse. For example, when entering "HelloWorld" as a project name, the warning came up that project names should start with a lower case letter though the online documentation suggests "HelloWorld". However this issue is of very little importance for me.


    Which JDK should be used (I accepted the default Java 1.8 during installation)
    What should I add in my Eclipse configuration?

Any hints welcome to overcome / bypass the problem(s):

Best regards

Re: HelloWorld project not successful [message #1822058 is a reply to message #1822053] Wed, 26 February 2020 13:01 Go to previous message
Ed Merks is currently offline Ed MerksFriend
Messages: 33076
Registered: July 2009
Senior Member
The JRE used in your IDE will need to be one that supports modules, so needs to be Java 9 or higher. Use Window -> Preferences -> Java -> Installed JREs to Add... a reference to a Java 9 or higher installation of Java.

Ed Merks
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