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java.lang.ClassNotFoundException: org.mariadb.jdbc.Driver after ant build.xml

I am creating jar and trying to execute the jar but its giving
C:\Users\xyz\workspace\ACS-AD\target>java -jar ExtractADData.jar
Current dir:C:\Users\xyz\workspace\ACS-AD\target
java.lang.ClassNotFoundException: org.mariadb.jdbc.Driver
Search error: java.lang.NullPointerException
java.lang.NullPointerException
at com.ACSSUsers_Mariadb.truncateACSSADStage(Unknown Source)
at com.ExtractADData.main(Unknown Source)
Its because of referenced jar not adding while building jar, so can I give java -cp "jar" Extract.jar or is there any other way to avoid this .. like forming jar with all dependency jars ? If so how to add it in build.xml ?

Java NoClassDefFoundError occurring even when the class path is added

I'm trying to compile and run the PercolationVisualizer in https://github.com/samet/Coursera-Algorithms-I-Assignment-1. According to http://introcs.cs.princeton.edu/java/stdlib/, the required dependencies StdDraw.java and In.java should be present in the stdlib package.
After cloning the repository, I copied stdlib.jar to the src directory and then compiled PercolationVisualizer using the following command:
javac -cp .:stdlib.jar PercolationVisualizer.java
(I did the same for Percolation.java). However, when I try to run the program using java PercolationVisualizer, I get the following error:
Exception in thread "main" java.lang.NoClassDefFoundError: In
at PercolationVisualizer.main(PercolationVisualizer.java:62)
Caused by: java.lang.ClassNotFoundException: In
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 1 more
I don't understand the NoClassDefFoundError for In, since it should be included in stdlib. Can anyone explain this behavior?

If you are on Windows, use the semicolon as CLASSPATH separator ..
javac -cp ".;stdlib.jar" PercolationVisualizer.java Percolation.java WeightedQuickUnionUF.java PercolationStats.java
If you are on linux/*nix, use the colon as CLASSPATH separator ...
javac -cp ".:stdlib.jar" PercolationVisualizer.java Percolation.java WeightedQuickUnionUF.java PercolationStats.java
For more information look here
If you want to debug the process of compilation, use the "-verbose" flag. It will display you CLASSPATH, the "lodaing jar_file ..." statements. If it has not recognized your jar file, it will now show the "loading" statement.

I finally unjar'd stdlib.jar into the working directory, after which the compilation worked. (This is indeed the first method to use stdlib described in http://introcs.cs.princeton.edu/java/stdlib/).

Jar file with Jaudiotagger, NoClassDefFoundError

I made a java class using the library Jaudiotagger, and it runs without problems. I then made a jar out of it and I got NoClassDefFoundError. Here's how it went:
I put the main class id3tag.java and the library jaudiotagger-2.0.3.jar in a folder and compiled using the command line. The program ran smoothly without problems.
javac -cp .;jaudiotagger-2.0.3.jar id3tag.java
java -cp .;jaudiotagger-2.0.3.jar id3tag
I then created the manifest and the jar file.
echo Main-Class: id3tag >manifest.txt
jar cvfm id3tag.jar manifest.txt id3tag.class jaudiotagger-2.0.3.jar
I got the following output:
added manifest
adding: id3tag.class(in = 5952) (out= 2997)(deflated 49%)
adding: jaudiotagger-2.0.3.jar(in = 811441) (out= 740599)(deflated 8%)
I then ran the jar file, and got "A Java Exception has occurred.". I also tried:
java -jar id3tag.jar
And I got the output:
Exception in thread "main" java.lang.NoClassDefFoundError: org/jaudiotagger/tag/
FieldDataInvalidException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2451)
at java.lang.Class.getMethod0(Class.java:2694)
at java.lang.Class.getMethod(Class.java:1622)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)
Caused by: java.lang.ClassNotFoundException: org.jaudiotagger.tag.FieldDataInval
idException
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)
... 6 more
I then replaced all (both) error classes used from Jaudiotagger with Exception and recreated the jar. Now the same thing happens as for seemingly all other jar files when I run them (with Java(TM) Platform SE binary, or through writing id3tag.jar in the command prompt) - nothing. java -jar, however, works and gave me a runtime error.
Exception in thread "main" java.lang.NoClassDefFoundError: org/jaudiotagger/audi
o/AudioFileIO
at id3tag.tagSong(id3tag.java:112)
at id3tag.tagAlbum(id3tag.java:82)
at id3tag.tagArtist(id3tag.java:40)
at id3tag.main(id3tag.java:170)
Caused by: java.lang.ClassNotFoundException: org.jaudiotagger.audio.AudioFileIO
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)
... 4 more
It seems like the entire library just doesn't do shit for me. How do I fix this, and how do I get jar files to run without java -jar? (Also, how do I get the full pile'o'errors in case someone needs it, rather than just having it say "x more"?)
I'm not very savvy with this kinda shit so the more specific the answer, the better. Thanks.
I'm on windows 8 and latest java (1.7.0_17).

this is informing you that you have no main class, as you might or might not already know all programs in almost all non web based programming languages must have a main class to start from. In java it looks like this
public static int main(String[] args){
}
The message is informing you that this class is no longer there, this could be a compiler error or something entirely different.
please try downloading the library again, and downloading eclipse ide for java ee developers.
this ide has a built in compiler that will work better than a command line sometimes.
i hope this helped.

I worked around it by including the org folder from jaudiotagger in my .jar instead of the actual .jar file, and I then used a .bat file to run it instead of running the .jar directly. Feel free to add your own answer if you find a better solution, and I'll check back.
I extracted jaudiotagger-2.0.3.jar with winrar so that the org folder was in the same folder as my main class. Then I could compile and run the main class simply by:
javac id3tag.java
java id3tag
I then created the manifest file the same way as before, and created the jar:
jar cvfm id3tag.jar manifest.txt id3tag.class org
The jar file worked with java -jar id3tag.jar, but simply writing id3tag.jar still did nothing. Turns out it's because jar files are by default run by the javaw.exe file, so you have to right click the jar file -> open with -> choose default program and navigate to the java.exe file in your java folder (just search the folder). Running the .jar then gets you "Error: Could not find or load main class path\id3tag.jar". I worked around this by using a .bat file. I entered
java -jar path\id3tag.jar
into Notepad and saved as whatevername.bat (save as type: all files).
I created a new question for getting the .jar file to work properly. See .jar error - could not find or load main class.

Error when running a class inside of a JAR

I am using the command:
java -cp my.jar myClass
but I am getting these errors.
Exception in thread "main" java.lang.NoClassDefFoundError: org.apache.tools.ant.Task
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:295)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:154)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:711)
at java.net.URLClassLoader.access$400(URLClassLoader.java:92)
at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1159)
at java.security.AccessController.doPrivileged(AccessController.java:314)
at java.net.URLClassLoader.findClass(URLClassLoader.java:594)
at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:743)
at java.lang.ClassLoader.loadClass(ClassLoader.java:711)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:325)
at java.lang.ClassLoader.loadClass(ClassLoader.java:690)
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:295)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:154)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:711)
at java.net.URLClassLoader.access$400(URLClassLoader.java:92)
at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1159)
at java.security.AccessController.doPrivileged(AccessController.java:314)
at java.net.URLClassLoader.findClass(URLClassLoader.java:594)
at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:743)
at java.lang.ClassLoader.loadClass(ClassLoader.java:711)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:325)
at java.lang.ClassLoader.loadClass(ClassLoader.java:690)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:494)
Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.Task
at java.net.URLClassLoader.findClass(URLClassLoader.java:599)
at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:743)
at java.lang.ClassLoader.loadClass(ClassLoader.java:711)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:325)
at java.lang.ClassLoader.loadClass(ClassLoader.java:690)
I am a novice when it comes to all this, but am trying to avoid using ANT (another thing I am a novice at) in order to run the class we need. Any help would be greatly appreciated!

Try to add the ant.jar also to your claspath
on Windows:
java -cp .;my.jar;pathofantjar/ant.jar myClass
or on linux:
java -cp .:my.jar:pathofantjar/ant.jar myClass

In general, this error means that the class in question was present at compile time, but cannot now be found on the classpath or in the JAR. The problem is that the classpath you are using when you are running your code is different from the classpath that you used when compiling your code.
You should post your code, as the error indicates your code depends on an ant library, and you say you're trying to avoid that.

You need to set your class path to see org.apache.tools.ant.Task. Something like
java -cp my.jar; /path/to/apache/tools.jar myClass

running a java project from command line using classpath issue?

I am trying to run a java project from the command line in linux, my project uses two external jar files. The command that i am givin is
java -classpath -jar bin:common-cli-1.2.jar:BuildFrameworkLibrary.jar com.kpit.goa.common.tools.kivibuild.KIVIBuild
where KIVIBuild is the class that contains the main function. But the error that am getting is:
baibhav#baibhav:~/git/KiviBuild/Infra/RepoManagement/BuildManagement/KIVIBuild$ java -classpath bin:common-cli-1.2.jar:BuildFrameworkLibrary.jar com.kpit.goa.common.tools.kivibuild.KIVIBuild
Gives
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/cli/ParseException
Caused by: java.lang.ClassNotFoundException: org.apache.commons.cli.ParseException
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: com.kpit.goa.common.tools.kivibuild.KIVIBuild. Program will exit.

You need a path separator e.g.
bin/common-cli-1.2.jar:BuildFrameworkLibrary.jar
The colon separates paths to individual jar files. e.g. in the above you're referencing the two files
bin/common-cli-1.2.jar
BuildFrameworkLibrary.jar
and also reference the directory containing your compiled classes e.g. if they're in (say) target/classes then use:
target/classes:bin/common-cli-1.2.jar:BuildFrameworkLibrary.jar
(relative to your current working directory)

Use following command
javac -classpath bin/common-cli-1.2.jar:bin/BuildFrameworkLibrary.jar KIVIBuild.java -d .
Do not forget to add dot at the end of command
check is /com/kpit/goa/common/tools/kivibuild/KIVIBuild.class exist or not
if yes run the following command
java -classpath bin/common-cli-1.2.jar:bin/BuildFrameworkLibrary.jar com/kpit/goa/common/tools/kivibuild/KIVIBuild
http://www.linuxheadquarters.com/howto/classpath.shtml
Rather than setting class path every time set it onces in existing classpath variable and just run the java command