New to coding, trying to figure out why this won't work-CodePudding

I was trying to learn how to code through my school, and it got me to put this into notepad , but when I did that, notepad said it had a parsing error. I assume my "{}" are messed up somewhere, but my school ran it fine. I tested it with Online GDB, Notepad , and blueJ. BlueJ wouldn't compile it at all, cmd/notepad returned it as corrputed, and online gdb won't run it because I can't rename the file, and haven't been taught what classes are.

public class HelloWorld 
{

    public static void main(String[] args)
    {
        //prints out a message to the console
      System.out.println("hello World!"); 
    }
}

CodePudding user response：

you've installed Java SE development Kit ?

CodePudding user response：

Try changing the class name from HelloWorld to Main because HelloWorld is public or you can remove public. if you use public than you should call HelloWorld class in a file named HelloWorld.java