Hey - thanks for the quick reply! Ya know, I read that bit
but the jar file I have is named log4j-1.2-17.jar, and I thought
it comprised everything. When I downloaded the code, that's
the only jar file there was. Clearly, I was delusional! I'll go
look for the corresponding API and core jar files...
Thanks again!
On Mon, May 13, 2013 at 6:00 PM, Gary Gregory <garydgreg...@gmail.com>wrote:
> You need the API and core jar files on your classpath for compilation
> and runtime.
>
> Gary
>
> On May 13, 2013, at 20:46, Mary Laude <marylaudeci...@gmail.com> wrote:
>
> > Hello -
> >
> > I can write, compile, and successfully run a Java program
> > to look at a .jar file and list the classes defined therein, but
> > I can't for the life of me get your "Using log4j" java code shown
> > in 1-2.17's INSTALL doc to work.
> >
> > Perhaps there's some other magic that needs to happen to get
> > this code snippet you wrote to yield output?
> >
> ----------------------------------------------------------------------------------------
> > You can now test your installation by first compiling the following
> > simple program.
> >
> > import org.apache.log4j.Logger;
> > import org.apache.log4j.BasicConfigurator;
> >
> > public class Hello {
> >
> > private static final Logger logger = Logger.getLogger(Hello.class);
> >
> > public
> > static
> > void main(String argv[]) {
> > BasicConfigurator.configure();
> > logger.debug("Hello world.");
> > logger.info("What a beatiful day.");
> > }
> > }
> >
> -----------------------------------------------------------------------------------------
> > I understand how CLASSPATH works, etc. I can get it to compile but
> > even if I again (with option -cp) specify exactly where the .class file
> is
> > that it just created from the compile, it still can't find what it needs.
> >
> > Depending on where I've put things and what I tell it, I get one of these
> > failing results when I try to run the executable:
> >
> > (1)
> > java.lang.NoClassDefFoundError: org/apache/log4j/Logger
> > at Hello.<clinit>(Hello.java:6)
> > Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Logger
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
> > at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
> > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
> > at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
> > ... 1 more
> > Exception in thread "main"
> >
> > or (2)
> > Error: Could not find or load main class Hello
> >
> >
> > Please, I am an old UNIX geek but this is really really frustrating me.
> > I have looked literally EVERYWHERE to find out what the problem is
> > but of course I am apparently the first and only person to ever have this
> > problem. Ha!
> >
> >
> > --
> > Please test what you build.
>
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>
>
--
Please test what you build.
