Develop Reference

maven dependencies works during compile, but fails during runtime java.lang.NoClassDefFoundError & java.lang.ClassNotFoundException

When I run my program on my compiler it works fine, but when I create the jar file, the maven dependencies that I'm working with fails to be referenced correctly when I run my jar file. I can't figure out what is going on. Can anyone help? I provided screenshots:
<dependency>
<groupId>org.languagetool</groupId>
<artifactId>language-en</artifactId>
<version>4.4</version>
<!--<scope>provided</scope>-->
<!--<scope>system</scope>-->
<!--<systemPath>${basedir}\src\lib\language-all-4.4.jar</systemPath>-->
</dependency>
Error I'm getting during runtime:
$ java -jar Spellcheck-1.0-SNAPSHOT.jar
Exception in thread "main" java.lang.NoClassDefFoundError: org/languagetool/Language
at Spellcheck.App.main(App.java:22)`Exception in thread "main"
Caused by: java.lang.ClassNotFoundException: org.languagetool.Language
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
Actual output with compiler:
/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/bin/java...
Potential error at line: "speling erroor everwhere."
Did you mean: [spelling, spewing, spieling]
Potential error at line: "speling erroor everwhere."
Did you mean: [error]
Potential error at line: "speling erroor everwhere."
Did you mean: [everywhere, ever where]
Process finished with exit code 0

You need add language-en-4.4.jar to your classpath
in the same folder where is your jar add a folder "lib" with your dependencies
if your MANIFEST file (Spellcheck-1.0-SNAPSHOT.jar/META-INF/MANIFEST.MF) not contains "Class-Path: lib/language-en-4.4.jar" add classpath as argument with your dependencies separated by ";" in linux or ":" in windows
java -cp "/lib/language-en-4.4.jar:/lib/other.jar" -jar Spellcheck-1.0-SNAPSHOT.jar
if your MANIFEST file contains the classpath only verify the existence of lib folder an run without cp argument
java -jar Spellcheck-1.0-SNAPSHOT.jar

Jar file made by netbeans for concole app, gives "main" java.lang.NoClassDefFoundError

In short my problem is that I made a console app project in netbeans which run perfectly in netbeans.
I built a jar file from this project, and the console running gives....
C:\blabla>java -jar mypath_to_jar\project.jar
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/client/ClientProtocolException
at project_pkg.Main.main(Main.java:20)
Caused by: java.lang.ClassNotFoundException: org.apache.http.client.ClientProtocolException
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 1 more
I extracted the jar and the manifest was:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.9.7
Created-By: 1.8.0_161-b12 (Oracle Corporation)
Main-Class: my_project_pkg.Main
Does someone have a solution on this problem please?
Thanks in advance...

You are using the jar file as self executing, please check you'r command line. you need to include the jar file to your project and use the project's main entry point.

java.lang.ClassNotFoundException: com.github.lwhite1.tablesaw.api.Table error while running Spark-submit using Eclipse

I am executing the java archive on Spark using spark-submit in Ubuntu. The command is given below. This JAR file was build using Maven Package. The dependencies are specified in pom.xml file.
]$ spark-submit --class HighScore.Driver --master local[*] JarfilePath/Levelwise_PCFS-0.0.1-SNAPSHOT.jar InputFilePath/K9_Site1.csv 1000.
I am getting following error even when packageName.className (HighScore.Driver) is specified in the command.
Here is the error message.
Exception in thread "main" java.lang.NoClassDefFoundError: com/github/lwhite1/tablesaw/api/Table
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:727)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:187)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:212)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:126)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.ClassNotFoundException: com.github.lwhite1.tablesaw.api.Table
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 10 more
com/github/lwhite1/tablesaw/api/Table dependency was also specified in pom.xml file. But still it throws the exception.
Can some one help me in rectifying this error.

Remember that the classloader (specifically java.net.URLClassLoader) will look for classes in package a.b.c in folder a/b/c/ in each entry in your classpath.
NoClassDefFoundError can also indicate that you're missing a transitive dependency of a .jar file that you've compiled against and you're trying to use.
For example, if you had a class com.example.Foo, after compiling you would have a class file Foo.class.
Say for example your working directory is .../project/. That class file must be placed in .../project/com/example, and you would set your classpath to .../project/.
Please refer this post for more details. It would be helpful.

Running java file with jar and text file input

I am trying to run a program on the command line that uses the JavaMail API. This program also reads in a message from a text file. However, I'm getting this error:
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: javax/mail/Address
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: javax.mail.Address
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)
... 7 more
Originally I used java -cp /path/to/mail.jar mailTest < message.txt
I configured the classpath for the jar successfully (as far as I know). Can anyone give me some pointers? :/

Your classpath is definitely wrong. The classpath needs to include both the javax.mail.jar file and the classes for your application. Exactly where is the JavaMail jar file, exactly where are your application classes, and exactly what java command line did you use? If your application classes are in the current directory, you need something like
java -cp /path/to/javax.mail.jar:. mailTest

Actually if you look at the error message:
Caused by: java.lang.ClassNotFoundException: javax.mail.Address
That's probably because your jar depends on another jar (probably mail-x.y.z.jar) and you did not include it on your classpath when trying to run your jar.
Either include the missing jar(s) on the command line, see this post, or add them to your manifest file, see the doc

Error running and compiling ParserDemo2

I'm trying to programatically generate dependency trees using the Stanford Parser, following the guide to running ParserDemo found at http://nlp.stanford.edu/software/parser-faq.shtml
I run the line:
java -mx200m -cp "stanford-parser.jar:." ParserDemo2 englishPCFG.ser.gz testsent.txt
which results in
Could not find or load main class ParserDemo2
This makes sense, I need to compile, so I run
javac -cp "stanford-parser.jar:." ParserDemo2.java
which generates a .class file.
However, when I run it using the above line, I get:
java -mx200m -cp "stanford-parser.jar:." ParserDemo2 englishPCFG.ser.gz testsent.txt
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
at edu.stanford.nlp.parser.common.ParserGrammar.<clinit>(ParserGrammar.java:46)
at ParserDemo2.main(ParserDemo2.java:25)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
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)
... 2 more
What am I doing wrong? Something pretty basic?

stanford-parser.jar, has dependency on other jars. You need to add them to classpath.