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MigLayout ClassNotFoundException when creating maven jar

I'm trying to create a jar file of my simple java gui application. I'm using Intellij IDEA and maven.
I have imported Mig Layout as a maven dependency, when I run the program inside Intellij IDEA everything works fine, but when I create a jar by doing mvn clean install or mvn clean package, although maven says BUILD SUCCESSFUL, when I try to open the jar file I get the following Stacktrace (I believe it's a stack trace). The image Stacktrace
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: net/miginfocom/swing/MigLayout at BotGui.<init>(BotGui.java:29) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$500(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) Caused by: java.lang.ClassNotFoundException: net.miginfocom.swing.MigLayout 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) ... 15 more
this is my dependencies in maven.
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ptcontact.testdiscord</groupId>
<artifactId>Discord_Bot</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.miglayout</groupId>
<artifactId>miglayout-swing</artifactId>
<version>5.0</version>
</dependency>
<dependency>
<groupId>net.dv8tion</groupId>
<artifactId>JDA</artifactId>
<version>3.8.0_436</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>jcenter</id>
<name>jcenter-bintray</name>
<url>https://jcenter.bintray.com</url>
</repository>
</repositories>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<target>8</target>
<source>8</source>
</configuration>
</plugin>
<plugin>
<!-- Build an executable JAR -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>3.1.0</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>lib/</classpathPrefix>
<mainClass>BotGui</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.7.1</version>
</plugin>
</plugins>
</build>
</project>
Yes I have tried out version 5.0, 4.2 and 5.2.
Additionally, I have tried to add miglayout-core as a dependency as well, but that didn't change anything.

I Resolved the problem!
Like #CrazyCoder said, I needed to create a Fat Jar, in other words I needed to actually include the dependencies inside my jar file. Because I'm a beginner I thought that maven did that for you automatically, oh well.
To create a fat jar, I followed this guide:
http://tutorials.jenkov.com/maven/maven-build-fat-jar.html

Maven package with Eclipse Project as dependency leads to NoClassDefFoundError

Here is the situation.
I am developing a GUI Client for (historically) CLI based processes. These processes are each under a Maven Project in Eclipse. My GUI is a separate Eclipse Maven Project. The GUI Project references the other projects in its pom.xml, the mvn package doesn't fail, yet when I run the project's ...-jar-with-dependencies.jar I get a NoClassDefFoundError for a child's project class.
Here is my pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>proto-xml-validator</artifactId>
<organization>
<name>SGcib</name>
<url>https://cib.societegenerale.com/en/</url>
</organization>
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>com.sgcib.bacardi.tools.gui.ProtoXMLValidatorGui</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id> <!-- this is used for inheritance merges -->
<phase>package</phase> <!-- bind to the packaging phase -->
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<!-- https://mvnrepository.com/artifact/com.miglayout/miglayout-swing -->
<dependency>
<groupId>com.miglayout</groupId>
<artifactId>miglayout-swing</artifactId>
<version>5.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.11.1</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.11.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.8</version>
</dependency>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-utils</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>idea</groupId>
<artifactId>ideaToolsUtils</artifactId>
<version>1.2-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>bacardi</groupId>
<version>0.0.1-SNAPSHOT</version>
<artifactId>pnl-loader</artifactId>
</dependency>
</dependencies>
<groupId>bacardi</groupId>
<version>0.0.1-SNAPSHOT</version>
</project>
And here is the stack trace
$ java -jar target/proto-xml-validator-0.0.1-SNAPSHOT-jar-with-dependencies.jar
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: idea/file/loader/runner/ValuationBVLoaderRunner
at com.sgcib.bacardi.tools.gui.ProtoXMLValidatorGui.initialize(ProtoXMLValidatorGui.java:55)
at com.sgcib.bacardi.tools.gui.ProtoXMLValidatorGui.<init>(ProtoXMLValidatorGui.java:33)
at com.sgcib.bacardi.tools.gui.ProtoXMLValidatorGui$1.run(ProtoXMLValidatorGui.java:127)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: idea.file.loader.runner.ValuationBVLoaderRunner
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)
The class that triggers the NoClassDefFoundError is located under the pnl-loader artifactId in the bacardi groupId.
I have already set the scope to compile for the Project dependencies.
Does anyone know what I might be doing wrong ?
Thanks in advance.

Solution to my problem:
The thing was that, although my Eclipse Maven Project had the correct dependency references, it couldn't properly package them in the JAR. Indeed, a project dependency is of no use to Maven (which doesn't know what an Eclipse project is, ofc). Maven goes looking for compiled JARs in his repositories. That's what #aka-one pointed out in the comments. I had to mvn clean install the several projects that were necessary to build in order to finally package my project.

maven with bouncycastle jar error

I am using the following dependecy in my pom.xml from maven:
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.55</version>
</dependency>
After running the project inside eclipse everything is working fine.
By using the export feature from eclipse, creating a runnable jar file, including all dependencies also everything works fine.
No other parameters or configurations in eclipse are set.
Only when i am running a mvn built something seems to be wrong.
(Maven built runs without any error or warnings)
--> Dependencies are all included.
An error occurs in that moment when it tries to establish an https connection, the place where this bouncycastle library is used.
Error:
javax.net.ssl.SSLException: java.security.ProviderException: Could not derive key
at sun.security.ssl.Alerts.getSSLException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.SSLSocketImpl.handleException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:553)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:412)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:179)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:328)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:612)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:447)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at plugin.KITIlias.executePost(KITIlias.java:117)
at plugin.KITIlias.login(KITIlias.java:45)
at control.IliasManager.login(IliasManager.java:27)
at control.IliasStarter.login(IliasStarter.java:31)
at control.LoginProvider$1.run(LoginProvider.java:56)
at java.lang.Thread.run(Unknown Source)
Caused by: java.security.ProviderException: Could not derive key
at sun.security.ec.ECDHKeyAgreement.engineGenerateSecret(ECDHKeyAgreement.java:133)
at sun.security.ec.ECDHKeyAgreement.engineGenerateSecret(ECDHKeyAgreement.java:163)
at javax.crypto.KeyAgreement.generateSecret(KeyAgreement.java:648)
at sun.security.ssl.ECDHCrypt.getAgreedSecret(Unknown Source)
at sun.security.ssl.ClientHandshaker.serverHelloDone(Unknown Source)
at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
at sun.security.ssl.Handshaker.processLoop(Unknown Source)
at sun.security.ssl.Handshaker.process_record(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
... 16 more
Caused by: java.security.InvalidAlgorithmParameterException
at sun.security.ec.ECDHKeyAgreement.deriveKey(Native Method)
at sun.security.ec.ECDHKeyAgreement.engineGenerateSecret(ECDHKeyAgreement.java:130)
... 25 more
Exception in thread "Thread-4" java.lang.NullPointerException
at plugin.KITIlias.executePost(KITIlias.java:125)
at plugin.KITIlias.login(KITIlias.java:45)
at control.IliasManager.login(IliasManager.java:27)
at control.IliasStarter.login(IliasStarter.java:31)
at control.LoginProvider$1.run(LoginProvider.java:56)
at java.lang.Thread.run(Unknown Source)
So for me it seems like something is missing during the maven built process.
Is it required to sign one of the jars?
my complete pom.xml is
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>X</groupId>
<artifactId>Y</artifactId>
<version>v1.1.0</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.4.5</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.2</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.controlsfx</groupId>
<artifactId>controlsfx</artifactId>
<version>8.20.8</version>
</dependency>
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.55</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.5</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>view.Dashboard</mainClass>
</manifest>
</archive>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
I am getting the runnable jar with:
mvn clean install
EDIT:
Manifest file from eclipse export
Manifest-Version: 1.0
Rsrc-Class-Path: ./ junit-4.10.jar hamcrest-core-1.1.jar log4j-1.2.17.
jar jsoup-1.7.2.jar httpcore-4.4.5.jar httpclient-4.5.2.jar commons-c
odec-1.9.jar commons-logging-1.1.1.jar controlsfx-8.20.8.jar openjfx-
dialogs-1.0.2.jar bcprov-jdk15on-1.55.jar
Class-Path: .
Rsrc-Main-Class: view.Dashboard
Main-Class: org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader
-> seems like there are still dependencies to eclipse

Problem seems to be here that the dependency from bouncycastle must be signed. The jar is not signed anymore if maven repacks it inside another jar.
Solution is to keep all dependecies next to the jar file and add a classpathdirectory. Now the main jar can use directly the signed jar.
(However i would really prefer to have one single jar file)

Error after Maven Package

a Project of mine using Commons Chain works fine, when i run it in the IDE.
Now i tried to package it with maven.
I used the following pom.xml:
<build>
<finalName>NAME</finalName>
<plugins>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>main.Main</mainClass>
</manifest>
</archive>
</configuration>
<version>2.6</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
<version>3.3</version>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>commons-chain</groupId>
<artifactId>commons-chain</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
</dependencies>
As you can see i added the Main Class to my manifest and specified the Dependencies to use.
The package process runs throught, but when i start the jar it says:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/ch
ain/impl/ChainBase
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
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)
at main.Main.main(Main.java:24)
Where does this error come from/what do i need to change in my config file?
Greetings,
Nicolas

You need to specify a classpath that has the jar files for your dependencies, something like java -cp=libs -jar main.jar where libs contains the dependency jar files. Maven will set that up for you with the maven-exec-plugin: mvn exec:java -DmainClass=main.Main. Maybe what you want is to have Maven create an "uber jar" that includes all of the class files for your dependencies so that java -jar main.jar just works. Use the maven-assembly-plugin or the maven-shade-plugin to create one. See What is an uber jar?.

Maven doesn't add the classpath to a jar by default.
You need to tell maven-jar-plugin to do that by adding an addClasspath entry to its configuration/archive block.
<addClasspath>true</addClasspath>
(this should be immediately before or after the mainClass line)

exception in ClassLoader executing jar outside of build environment

A simple Cassandra client app using netflix astyanax driver is built in Eclipse. Here is the pom.xml file:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>CCL1</groupId>
<artifactId>CCL10</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>CassandraCL1</name>
<description>Cassandra Client 1</description>
<dependencies>
<dependency>
<groupId>com.netflix.astyanax</groupId>
<artifactId>astyanax</artifactId>
<version>1.56.44</version>
</dependency>
</dependencies>
</project>
The app works fine when started from Eclipse. But when the jar file is copied to an external machine it fails to start with the following exception:
ubuntu#ip-172-31-31-41:~/tmp$ java -cp ./CCL10-0.0.1-SNAPSHOT.jar AppCCL1
Exception in thread "main" java.lang.NoClassDefFoundError: com/netflix/astyanax/connectionpool/exceptions/ConnectionException
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: com.netflix.astyanax.connectionpool.exceptions.ConnectionException
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)
... 6 more
The external machine is Amazon t1.micro Ubuntu-12 instance. The only software installed there is Oracle’s Java Runtime Environment 1.7.
It looks like some dependency is missing, but I cannot even see the name of the missing class.
Why did Maven fail to insert some dependency in jar? How do I troubleshoot and resolve such a problem?

It turns out Maven does not include all the dependencies in jar. (I assumed Maven does this automatically). Including all dependencies in jar is explained here:
How can I create an executable JAR with dependencies using Maven?
So I solved the problem by adding the following fragment in my xml file:
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>AppCCL1</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id> <!-- this is used for inheritance merges -->
<phase>package</phase> <!-- bind to the packaging phase -->
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>