Newbie question about basic code - "Hello World"

[Kimomaru]

I'm working through Java Examples in a Nushell and the first example includes syntax that I would like to understand better. Really basic;

package je3.basics;
public class Hello {
public static void main (String [] args) {
System.out.println ("Hello World");
}
}

It compiles but it generates exceptions. I get this error;

c:\JFiles\Java Examples in a Nutshell\Chapter 1>java Hello
Exception in thread "main" java.lang.NoClassDefFoundError: Hello (wrong name: je
3/basics/Hello)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknow n Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unkno wn Source)



I know enough about this that if I remove the package syntax that it will work fine, but the book makes the point that adding prefixes in the long run is a good idea since it helps avoid naming conflicts. Cool. Why doesn't it run?

[KevinWorkman]

Managing Source and Class Files (The Java™ Tutorials > Learning the Java Language > Packages)

[Kimomaru]

Thanks, Kevin. I figured it out but couldn't post until now (the forums have been running slow this morning, I think.) Thank you for the reply.

[KevinWorkman]

No problem. The forums have been slow for me as well.