after about a month of not opening eclipse at all, I get a strange error
java.lang.NoClassDefFoundError: Z
Caused by: java.lang.ClassNotFoundException: Z
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Exception in thread "main"
I don't really understand what it wants, it doesn't show me anything else, something about main class "Z" not being defined? but it is, isn't it?
[CODE][/CODE] doesn't work very well here so I'll put source here: http://pastebin.com/heMhDqU2
Thank you.
Edit 1: it shows me when I try to compile and run. Btw, indent code by using 4 spaces for 500 lines... seems kinda reduntant
Your code is fine it compiles here.
Most probably an eclipse error.
Try this.
Close eclipse
Start eclipse with the flag .../eclipse.exe -clean
Press Project -- > Clean
Related
While Executing the Program, Below are the issues Compiler is throwing
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/commons/collections4/ListValuedMap
at ReadExcel.main(ReadExcel.java:19)
Caused by: java.lang.ClassNotFoundException:
org.apache.commons.collections4.ListValuedMap
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
Please help me know how to solve this
Thanks in advance
you should be good if you add the below jar.
https://mvnrepository.com/artifact/org.apache.commons/commons-collections4/4.1
You are missing some required class maybe check your version on pom.xml if you are using eclipse you can do cnt shift T and see if you can open the missing class (ListValuedMap)file and see if it comes from the same jar as you specified in your pom.
Is there any one knows how to fix the error below. Before I have epubcheck-1.2.jar and it perfectly worked in my program and now i try to incorporate this new epubcheck-3.0.1.jar. I encounter this error. I am not a java developer, hope someone can help me here.. I need to upgrade my program because the for epub 2 and epub 3, or there is any one knows an offline validator.
Epubcheck Version 3.0.1
java.lang.NoClassDefFoundError: com/thaiopensource/validate/SchemaReaderFactory
at com.adobe.epubcheck.ocf.OCFChecker.<clinit>(OCFChecker.java:65)
at com.adobe.epubcheck.api.EpubCheck.validate(EpubCheck.java:205)
at com.adobe.epubcheck.tool.Checker.validateFile(Checker.java:172)
at com.adobe.epubcheck.tool.Checker.run(Checker.java:255)
at com.adobe.epubcheck.tool.Checker.main(Checker.java:182)
Caused by: java.lang.ClassNotFoundException: com.thaiopensource.validate.SchemaReaderFactory
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 5 more
It's look like You missed at least one dependency
http://mvnrepository.com/artifact/com.thaiopensource/jing/20091111
here it is on maven. if you add this to your project anything should be ok.
I have been trying to use this external class folder which was given from my programming lecturer a few months back. I followed people's explanations of how to add via "configure build class", and the application somewhat recognises the class because a shortlist of some of the methods are given. It also does not return any errors prior to runtime but once it's ran I get this:
Exception in thread "main" java.lang.NoClassDefFoundError: Console
at lab3.q2.main(q2.java:15)
Caused by: java.lang.ClassNotFoundException: Console
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
This is really frustrating as it works from the linux computers in my college without issue. The class file is just a variation of the scanner that we use for user i/o, I have it attached.
Console.class file
While running a scheduler program through command prompt, I am getting the below error:
Exception in thread "main" java.lang.NoClassDefFoundError: org/quartz/ScheduleBu
ilder
Caused by: java.lang.ClassNotFoundException: org.quartz.ScheduleBuilder
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: ScheduleEmail. Program will exit.
Even after adding all the jar files also I am getting the following.
Java command : java - cp .;E:/Jars/*; ScheduleEmail
Can anyone please suggest why I am getting this?
When using a wildcard (on windows platform), you need to surround it with quotes to work correctly:
java -cp ".;E:/Jars/*;" ScheduleEmail
1. http://docs.oracle.com/javase/6/docs/technotes/tools/windows/classpath.html
first, make sure if there is a typo, there's no space between "-" and "cp"
second, check if quarts jars are in E:/Jars/
I have a class that uses Java3D that successfully compiles, although when I try to run it it says: Exception in thread "main" java.lang.NoClassDefFoundError:
javax/media/j3d/Canvas3D,
With the following stack trace:
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javax.media.j3d.Canvas3D
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Stuff I have already tried:
I couldn't even get it to compile until I copied the Java3D jars into /jre/lib/ext/.
I have the latest Java, Java3D and I am using Notepad++ and I have tried reinstalling Java3D.
I have set the classpath/path correctly.
There are no errors in the code.
I can run normal Java applications I have created.
I have tried using the classpath thing when running the application (java -classpath blahblah ApplicationName).
I have checked inside the jars and the classes (including Canvas3D) are definitely in there.
Not everything you say is true.
IF the classes are in the jars, and IF you have set the classpath correctly, THEN you would not get this message.
I suspect you have a build path confused with a classpath (which is mostly associated with runtime, where build path is associated with compile time). Without knowing more details of your runtime environment, it's hard to be more specific.
It always puzzles me how someone with a problem they cannot solve asserts so definitely that all these things are set up "correctly": how do you know? Isn't the problem some evidence to the contrary, at least enough for a small doubt?