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Java Local Development Environments Exploring Your IDE Creating Your First Project

Greg Wienecke
Greg Wienecke
20,765 Points
Posted by Greg Wienecke
Greg Wienecke
20,765 Points

Error:(6, 8) java class Systemizer is public, should be declared in a file named Systemizer

When I try to run it I get this error. Error:(6, 8) java class Systemizer is public, should be declared in a file named Systemizer.

I named it Systemizer, and it says Main.java - Systemizer at the top just like Craig's.

I noticed that in the video Craig's says public class Main, but in the teacher's notes the code he has us copy/paste says public class Systemizer. I tried it both ways and get an error both times. Can anyone help? Here is my code that I copied and pasted from the teacher's notes:

package com.teamtreehouse;

import java.util.Set;
import java.util.TreeSet;

public class Systemizer {

    public static void main(String[] args) {
        System.out.printf("This is the classpath:  %s %n",
                System.getProperty("java.class.path"));
        Set<String> propNames = new TreeSet<String>(System.getProperties().stringPropertyNames());
        for (String propertyName : propNames) {
            System.out.printf("%s is %s %n",
                    propertyName,
                    System.getProperty(propertyName));
        }

    }
}
Aaron Kaye
Aaron Kaye
10,948 Points
Aaron Kaye
Aaron Kaye
10,948 Points

What is the name of your file?

2 Answers

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,858 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,858 Points

I know this is an old post, but there is a naming error in the code you copy from the Teacher's Notes.

Instead of public class Systemizer, which will cause that error. It should be public class Main which runs with no errors.

Just need a little fix up Craig Dennis :)

:dizzy:

Greg Wienecke
Greg Wienecke
20,765 Points
Greg Wienecke
Greg Wienecke
20,765 Points

Thanks for the response Jason! I thought I had tried that already, but anyway it worked this time.

Greg Wienecke
Greg Wienecke
20,765 Points
Greg Wienecke
Greg Wienecke
20,765 Points

The project is named Systemizer and the file is ~/IdeaProjects/Systemizer