The class name in the code executor.I don't know why the java error appears.

Public class course object {

 // Member variable
  String Subject Name;//Completed
  String subject code;
  String Subject Classification;//Completed
  String Score;//Completed
  String purpose of lecture;
  String Learning Objectives;
  String Lecture Text;
  String Faculty;//Completed

We did the chords like this Both in Eclipse and cmd windows were source code that ran without errors. However, in the code executor, when you press "

Command failed: /undefined.java:1: error: class subject is public, should be defined in a file named course object.java public class course object { ^ 1 error

There is an error like this, but I heard that you don't have to make a separate class file in the code executor I wonder why this error occurs.