I've compiled and I am now trying to run this program from the terminal in OSX and Fendora using the following command from within the ie directory:
java ie.moguntia.webcrawler.Psucker http://www.wikipedia.org test
However I get the following error:
Exception in thread "main" java.lang.NoClassDefFoundError: ie/moguntia/webcrawler/Psucker
Caused by: java.lang.ClassNotFoundException: ie.moguntia.webcrawler.Psucker
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
I haven't ran applications that used packages from the command line before so I am therefore unable to figure out the error.
I have attempted to set the classpath using export CLASSPATH=.
so that the current directory would be added to the classpath.
The directory structure is as follows:
ie/moguntia/webcrawler/
Depending on where your compiled classes are located, you need to include this location in the java command, e.g. if they are in the classes
directory:
java -cp classes ie.moguntia.webcrawler.PSucker http://www.wikipedia.org test
or if they are in the current directory:
java -cp . ie.moguntia.webcrawler.PSucker http://www.wikipedia.org test
or just
java ie.moguntia.webcrawler.PSucker http://www.wikipedia.org test
Here's how I was able to run this (unzip, cd to directory, compile, find classes, run):
(13:55:52) ~/Desktop/temp → ll
total 32
-rw-r--r--@ 1 Nils.Winkler staff 14K 12 Mär 13:41 multiweb.zip
(13:56:01) ~/Desktop/temp → unzip multiweb.zip -d multiweb
Archive: multiweb.zip
creating: multiweb/CVS/
creating: multiweb/ie/
creating: multiweb/ie/CVS/
creating: multiweb/ie/moguntia/
creating: multiweb/ie/moguntia/CVS/
creating: multiweb/ie/moguntia/threads/
creating: multiweb/ie/moguntia/threads/CVS/
inflating: multiweb/ie/moguntia/threads/ControllableThread.java
inflating: multiweb/ie/moguntia/threads/MessageReceiver.java
inflating: multiweb/ie/moguntia/threads/ObjectQueue.java
inflating: multiweb/ie/moguntia/threads/Queue.java
inflating: multiweb/ie/moguntia/threads/ThreadController.java
creating: multiweb/ie/moguntia/webcrawler/
creating: multiweb/ie/moguntia/webcrawler/CVS/
inflating: multiweb/ie/moguntia/webcrawler/PSucker.java
inflating: multiweb/ie/moguntia/webcrawler/PSuckerThread.java
inflating: multiweb/ie/moguntia/webcrawler/SaveURL.java
inflating: multiweb/ie/moguntia/webcrawler/URLQueue.java
inflating: multiweb/ie/moguntia/webcrawler/WSDLCrawler.java
inflating: multiweb/ie/moguntia/webcrawler/WSDLCrawlerThread.java
(13:56:08) ~/Desktop/temp → cd multiweb
(13:56:57) ~/Desktop/temp/multiweb → javac ie/moguntia/webcrawler/*.java
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
(13:57:11) ~/Desktop/temp/multiweb → find . -name *.class
./ie/moguntia/threads/ControllableThread.class
./ie/moguntia/threads/MessageReceiver.class
./ie/moguntia/threads/Queue.class
./ie/moguntia/threads/ThreadController.class
./ie/moguntia/webcrawler/PSucker.class
./ie/moguntia/webcrawler/PSuckerThread.class
./ie/moguntia/webcrawler/SaveURL.class
./ie/moguntia/webcrawler/URLQueue.class
./ie/moguntia/webcrawler/WSDLCrawler.class
./ie/moguntia/webcrawler/WSDLCrawlerThread.class
(13:57:18) ~/Desktop/temp/multiweb → java ie.moguntia.webcrawler.PSucker http://www.wikipedia.org test
[0] http://www.wikipedia.org