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Java Forum / General / July 2007Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/log4j/Priority
Hello, I built an eclipse project and used its Export tool to create a jar file. When I executed the jar, I got the above message. The project folders structure is as follows: /base/.settings /base/config -->holds some xml file /base/lib/ -->holds 3rd party jars including the log4j /base/bin --> output folder. Also holds log4j.properties file. /base/xxx --> holds the main class source /base/src/a1/a2/a3/... --> sources /base/src/b1/b2/b3/... --> sources /base/src/c1/c2/c3/... --> sources I wasted already so much time on that! Any help will be blessed! Thanks! And thus spoke dushkin... > /base/lib/ -->holds 3rd party jars including the log4j Did you include that in your manifest? Flo > And thus spoke dushkin... > [quoted text clipped - 3 lines] > > Flo This is the manifest file created automatically by the eclipse export tool: Manifest-Version: 1.0 Sealed: true Main-Class: com.comverse.mep.CdrManagerNG.CdrManagerNG Didn't think I need to change the auto created file... And if so - do you think I need to add every jar to the manifest? And how? Thanks. And thus spoke dushkin... > Didn't think I need to change the auto created file... > And if so - do you think I need to add every jar to the manifest? And > how? I'm no expert, but when I use Ant to build my files and create a .jar (and .zip it toegether with the libs), I always add the class-path to the manifest-file, for example: Class-Path: . ./libs/MyLib.jar With Ant it's rather simple to do that... <manifest file="manifest.txt"> <attribute name="Built-By" value="${user.name}"/> <attribute name="Main-Class" value="translator.Translator"/> <attribute name="Class-Path" value=". ./libs/MyLib.jar"/> </manifest> Then I can use... <jar destfile="${ant.project.name}.jar" basedir="${bin}" manifest="manifest.txt"/> ...to create the jar with the correct manifest... Flo > And thus spoke dushkin... > [quoted text clipped - 24 lines] > > Flo Well, I added Class-Path: ..\libs/lib\log4j-1.2.14.jar to the manifest file but the result occur. Any other ideas? > > And thus spoke dushkin... > [quoted text clipped - 32 lines] > > - Show quoted text - Well, I added Class-Path: ..\libs\lib\log4j-1.2.14.jar to the manifest file but the same result occur. Any other ideas? And thus spoke dushkin... > Well, I added > Class-Path: ..\libs\lib\log4j-1.2.14.jar > to the manifest file but the same result occur. above you write, that it's in /lib/, now you search for it in . "../libs/lib/"... MY directory is called "/libs/"... That isn't an integral part of the line :-) You have to put your own directory there... In your case, probably... Class-Path: . /lib/log4j-1.2.14.jar Or perhaps /base/lib/etc. I'm not sure about your real structure. Flo > And thus spoke dushkin... > [quoted text clipped - 15 lines] > > Flo Hi Flo, That was a foolish mistake developed from being so tired of seeking for an answer... :-( Anyway, it still no good... Again: The directories structure inside the jar is as follows: /com --> contains sub folders with the class files /config --> contains an xml file /lib --> contains all the third party jars (including the log4j) /Meta-inf .classpath .project The manifest is: --------------------- Manifest-Version: 1.0 Sealed: true Main-Class: com.comverse.mep.CdrManagerNG.CdrManagerNG Class-Path: .\lib\log4j-1.2.14.jar --------------------- I also tried ..\lib and \lib The classpath is <?xml version="1.0" encoding="UTF-8" ?> - <classpath> <classpathentry kind="src" path="src" /> <classpathentry kind="lib" path="lib/log4j-1.2.14.jar" /> <classpathentry kind="lib" path="lib/dom4j-1.6.1.jar" /> <classpathentry kind="lib" path="lib/jaxen-1.1-beta-5.jar" /> <classpathentry kind="lib" path="lib/sftp.jar" /> <classpathentry kind="lib" path="lib/classes12.jar" /> <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER" /> <classpathentry kind="output" path="bin" /> </classpath> Flo 'Irian' Schaetz wrote: >>> I'm no expert, but when I use Ant to build my files and create a .jar >>> (and .zip it toegether with the libs), I always add the class-path to [quoted text clipped - 10 lines] >>> manifest="manifest.txt"/> >>> ...to create the jar with the correct manifest... > Well, I added > Class-Path: ..\libs\lib\log4j-1.2.14.jar > to the manifest file but the same result occur. > > Any other ideas? Notice that Flo's example used forward slashes, not backslashes as yours did. Also, you are rooting the log4j JAR's location in the parent directory of your JAR, not usually safe, unlike Flo's example which used the current directory. Notice that the log4j JAR must be located in a directory on the network / file system where your JAR is, because: > The Class-Path header points to classes or JAR files on the local network, not JAR files within the JAR file or classes accessible over internet protocols. From <http://java.sun.com/docs/books/tutorial/deployment/jar/downman.html> which you should read.  SignatureLew And thus spoke Lew... > Notice that the log4j JAR must be located in a directory on the network / file > system where your JAR is, because: Oh, f... yes. I knew I had forgotten something. My libs are in the directory /libs/, not in the .jar file internal directory /libs/. So my structure looks like this.. /MyJar.jar /libs/MyLib1.jar /libs/MyLib2.jar etc. The Manifest inside the MyJar.jar points to /libs/ in the filesystem... This is why I use Ant .zip the whole thing after making the .jar, so I bundle the libs and the jar toegether... (Ok, to be honest, I even use an .exe wrapper, but that's what my boss wants - he forces me to do so :-). Flo > Flo 'Irian' Schaetz wrote: > >>> I'm no expert, but when I use Ant to build my files and create a .jar [quoted text clipped - 34 lines] > > - Show quoted text - Oh! So, shouldn't (or maybe can't) the jars be placed inside the jar??? because this is how the export tool did by itself! I would have prefered to ship a jar with all its resources inside... How this information affects your kind advices Lew and Flo? And thus spoke dushkin... > So, shouldn't (or maybe can't) the jars be placed inside the jar??? > because this is how the export tool did by itself! > I would have prefered to ship a jar with all its resources inside... > How this information affects your kind advices Lew and Flo? Read the other posting: It's correct. To include another .jar into your .jar, you'll probably have to extract the classes from it... Flo Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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