Reading a book and getting java.lang.NoClassDefFoundError
 

Im reading a book on java, and im on the lesson OOP and java.

This is my code:

class Motorcycle {

String make;

String color;

boolean engineState;



void startEngine() {

if (engineState == true)

System.out.println("The engine is already on.");

else {

engineState = true;

System.out.println("The engine is now on.");

}

}



void showAtts() {

System.out.println("This motorcycle is a " + color + " " + make);

if (engineState == true)

System.out.println("The engine is on.");

else System.out.println("The engine is off.");

}



public static void main(String[] args) {

Motorcycle m = new Motorcycle();

m.make = "Yamaha RZ350";

m.color = "yellow";

System.out.println("Calling showAtts...");

m.showAtts();

System.out.println("--------");

System.out.println("Starting engine...");

m.startEngine();

System.out.println("--------");

System.out.println("Calling showAtts...");

m.showAtts();

System.out.println("--------");

System.out.println("Starting engine...");

m.startEngine();

}

}

This is the error i get:

java.lang.NoClassDefFoundError: Motorcycle/Motorcycle (wrong name: Motorcycle)

        at java.lang.ClassLoader.defineClass0(Native Method)

        at java.lang.ClassLoader.defineClass(ClassLoader.java:537)

        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)

        at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)

        at java.net.URLClassLoader.access$100(URLClassLoader.java:55)

        at java.net.URLClassLoader$1.run(URLClassLoader.java:194)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.net.URLClassLoader.findClass(URLClassLoader.java:187)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:289)

        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:235)

        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)

Exception in thread "main"

Re: Following tutorials and getting java.lang.NoClassDefFoundError
 

nm if i use java Motorcycle in command line it works just fine..

Re: Following tutorials and getting java.lang.NoClassDefFoundError
 

did you set your classpath?

how to set your classpath on xp
http://www.cs.ucsb.edu/~teliot/Path_and_Classpath.htm

Re: Following tutorials and getting java.lang.NoClassDefFoundError
 

Ok thx, just done that, gotta do a reboot :)

edit: no luck.. im gonna use JCreator LE(isnt the same as JBuilder), used it before and proved to work so.. thx for the help