Re: Problem starting out with Java . . .

From: Ash (furroash_at_nb.sympatico.ca)
Date: 10/24/04 

Date: Sun, 24 Oct 2004 15:59:36 GMT

Raymond DeCampo wrote:
> Ash wrote:
>
>> flaps81 wrote:
>>
>>> On Sun, 24 Oct 2004 01:06:02 GMT, Ash <furroash@nb.sympatico.ca>
>>> wrote:
>>>
>>>
>>>> Hey. Im new to Java, and am having a prroblem with the netbeans IDE.
>>>> every time i try to import java.awt.* , I can't use any of the
>>>> methods(like they don't exist). I can compile it fine, but when I
>>>> try to run it, I get "exception in class main".
>>>>
>>>> Can anyone help me, please?
>>>
>>>
>>>
>>>
>>> Post the code that gives you trouble, an exception can be many
>>> things...
>>
>>
>> OK - Here it is:
>>
>> import java.awt.*;
>> public class TestFrame
>> {
>> public static void main(String[] args)
>> {
>> Frame f = new Frame();
>> f.reshape(10,10,200,200);
>>
>> Button b = new Button("Hello Cyberspace");
>> b.setBackground(Color.black);
>> b.setForeground(Color.white);
>> f.add(b);
>> f.show();
>> }
>> }
>>
>> Like I said - it compiles fine, but gives me an exception every time I
>> try to run it. I'm using NetBeans 3.6 and J2SKD 1.4.2.
>>
>
> This program compiles fine (although with a deprecation warning on
> reshape()) and runs fine for me (JDK 1.4.2_04-b05 on linux, no IDE to
> muddy the waters). Please post the exception you are getting. Also, I
> would encourage you to try this on the command line if you haven't
> already to determine if NetBeans is the problem.
>
> HTH,
> Ray
>
Nice sig. Ok - I get this from the compiler output:

Note: D:\Java\Bin\eXtropia\TestFrame.java uses or overrides a deprecated
API.
Note: Recompile with -deprecation for details.
Finished TestFrame.

and this from the program output:

java.lang.NoClassDefFoundError: Bin/eXtropia/TestFrame (wrong name:
TestFrame)
         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"

I'll try doing it throught the command window.