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Following tutorials and getting java.lang.NoClassDefFoundError

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Reading a book and getting java.lang.NoClassDefFoundError

 
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  #1
Dec 29th, 2004
Im reading a book on java, and im on the lesson OOP and java.

This is my code:
Java Syntax (Toggle Plain Text) 
  1. class Motorcycle {
  2. String make;
  3. String color;
  4. boolean engineState;
  5.  
  6. void startEngine() {
  7. if (engineState == true)
  8. System.out.println("The engine is already on.");
  9. else {
  10. engineState = true;
  11. System.out.println("The engine is now on.");
  12. }
  13. }
  14.  
  15. void showAtts() {
  16. System.out.println("This motorcycle is a " + color + " " + make);
  17. if (engineState == true)
  18. System.out.println("The engine is on.");
  19. else System.out.println("The engine is off.");
  20. }
  21.  
  22. public static void main(String[] args) {
  23. Motorcycle m = new Motorcycle();
  24. m.make = "Yamaha RZ350";
  25. m.color = "yellow";
  26. System.out.println("Calling showAtts...");
  27. m.showAtts();
  28. System.out.println("--------");
  29. System.out.println("Starting engine...");
  30. m.startEngine();
  31. System.out.println("--------");
  32. System.out.println("Calling showAtts...");
  33. m.showAtts();
  34. System.out.println("--------");
  35. System.out.println("Starting engine...");
  36. m.startEngine();
  37. }
  38. }

This is the error i get:
Java Syntax (Toggle Plain Text) 
  1. java.lang.NoClassDefFoundError: Motorcycle/Motorcycle (wrong name: Motorcycle)
  2.         at java.lang.ClassLoader.defineClass0(Native Method)
  3.         at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
  4.         at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
  5.         at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
  6.         at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
  7.         at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
  8.         at java.security.AccessController.doPrivileged(Native Method)
  9.         at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
  10.         at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
  11.         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
  12.         at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
  13.         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
  14. Exception in thread "main"
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Re: Following tutorials and getting java.lang.NoClassDefFoundError

 
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  #2
Dec 29th, 2004
nm if i use java Motorcycle in command line it works just fine..
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Re: Following tutorials and getting java.lang.NoClassDefFoundError

 
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  #3
Dec 30th, 2004
did you set your classpath?

how to set your classpath on xp
http://www.cs.ucsb.edu/~teliot/Path_and_Classpath.htm
Last edited by paradox814; Dec 30th, 2004 at 5:05 am. Reason: added url
http://www.brangle.com/
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Re: Following tutorials and getting java.lang.NoClassDefFoundError

 
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  #4
Dec 30th, 2004
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
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