Develop Reference

Add Jar and Classifier as dependency to Maven project

I have a local Jar file that I want to add as a dependency for a Maven project that I am working on.
That is easy to do as this answer states.
The problem is that this Jar file requires a foo.classifier file to work properly.
This Jar file is meant to be run by command line (java -jar bar.jar {argument}). The Jar and the classifier files are in the same directory, so everything works just fine.
However, from my project, I want to call the Jar file using its methods and not running a process.
I added the Jar file as a dependency and managed to call the main method that receives the argument, however, it doesn't work properly because of the foo.classifier the file is not set as a dependency for that Jar file to work.
Does anyone know how can I set it as a dependency of that Jar file?

Put foo.classifier files in exact folder in .m2\repository folder where your local Jar file that you added as a dependency is present as dependency jar will be referred from local repository

You can put your jar to libs directory,and add below code into your pom.xml file:
<dependency>
<groupId>htmlunit</groupId>
<artifactId>htmlunit</artifactId>
<version>2.21-OSGi</version>``
<scope>system</scope>
<systemPath>the full path of the jar</systemPath>
</dependency>

Add the jar to maven repository with the follows command line, specify a group id, artifact id and a version
mvn install:install-file -Dfile="my-local.jar" -DgroupId="my.groupid" -DartifactId="name" -Dversion="1.0.0" -Dpackaging=jar
and then add as dependency to your pom
<dependency>
<groupId>my.groupid</groupId>
<artifactId>name</artifactId>
<version>1.0.0</version>
</dependency>

Getting NoClassDefFoundError while invoking external JAR in maven project

I have a maven based project where I have to invoke an external jar (say country.jar)
I added this jar on src/lib folder and did below setting in pom.xml
<dependency>
<groupId>country-stubs</groupId>
<artifactId>country-stubs</artifactId>
<scope>system</scope>
<version>1.0</version>
<systemPath>${basedir}\src\lib\country.jar</systemPath>
</dependency>
While Running my application I am getting error
java.lang.NoClassDefFoundError: com/fsg/bpo/webservices/countWebService
Location(com/fsg/bpo/webservices/countWebService) is referring to the class present under country JAR
Do I need to add few more settings to configure external JAR in maven ?

If you are using scope system you are saying it is a provided jar later on. I would use runtime maybe. Have a look at maven scopes

If it is web application then your jar won't get bundled inside your war file. Then you will get this issue. you can directly copy this country.jar to your WEB-INF lib folder and use that system path.

1st u need to add ur external jar to ur local maven directory..
using below command on cmd..
mvn install:install-file -DgroupId= -DartifactId=aes-decryption -Dversion=1.0.0 -Dpackaging=jar -Dfile=./target/aes-decryption-1.0.0.jar -DgeneratePom=true

Embed external .exe into .jar file in a Maven project

I have a Maven project converted from a Java project.
My project structure only contains one folder for sources (/src) and doesn't look like a standard Maven project which creates /src/main/java and /src/test/java folders.
I'm trying to add a resource to this project. The resource will be pulled from Nexus and it is a zip archive that contains an .exe file. I've added the following into pom.xml:
<dependency>
<groupid>group.id</groupid>
<artifactid>artifactid</artifactid>
<version>1.0</version>
<type>zip</type>
</dependency>
The resource (zip file) is downloaded in .m2/repository/.../.../. I would need a way to access the resource (unzip it and run the .exe file) and also, I would like this resource to be embedded in the .jar file that I'll export.
Basically, I want to embbed an external .exe file into a .jar file and be able to execute it. The .exe file is stored in an acrhive on Nexus.
Is there any way to achive this?
Thanks!

To grab and unzip an artifact, simply use the mvn dependency:unpack goal (No need for dependency here, but it might be implied)
https://maven.apache.org/plugins/maven-dependency-plugin/unpack-mojo.html
To execute an executable, use the mvn exec:exec goal
http://mojo.codehaus.org/exec-maven-plugin/exec-mojo.html
I don't understand your final requirements, but I hope the above helps.

local dependency in my case

I am using maven to build my java project.
I have a library jar named my.jar used as my project's dependency. However, it is not available in the remote central repository. So, I would like to put the jar file under my project. So, I created a folder named my_repo/ under MyProject.
The directory structure of MyProject looks like this:
MyProject/
my_repo/
my.jar
pom.xml
But I have no idea how could I define my pom to find this particular dependency under MyProject/my_repo/my.jar ?
Could someone please help me for my scenario? By the way, I have also some other dependencies defined in my pom.xml, they are available in the remote central repo.

Using the system scope. ${basedir} is the directory of your pom.
<dependency>
<artifactId>..</artifactId>
<groupId>..</groupId>
<scope>system</scope>
<systemPath>${basedir}/my_repo/my.jar</systemPath>
</dependency>

The recommended way is usually to use a Maven Repository Manager (e.g. Nexus) and then deploy your library to this Maven Repository Manager.
See here for how to set up the settings.xml file:
http://books.sonatype.com/nexus-book/reference/maven-sect-single-group.html

How to create maven dependency for your local jars..
1)Create a maven project of the program of which you have to create the jar.
2)Add required groupid and artifact id and version no.
3)Then after writing the java files export it as a jar.
4)Now open other project in which you want to add local jar dependency.Go into its pom.xml and add dependency with the group id,artifact id and version which u had entered in the jar project.
5)Maven clean and install.Now that jar file will be available in your local repository. :)

Eclipse how to import a jar file as a maven project

I have downloaded a source jar file of OrientDB from maven repo, orientdb-source.jar. The structure is:
orientdb-source.jar/com/orienttechnologies/orient/core/...
/META-INF/...
I have installed m2e plugin. But I dont know to import this jar file as a maven project. I dont want to import this jar file as an external jar. Can anyone help me?

It sounds like you want to use/access this artifact within a maven environment.
If all you want to do is use the jar in your class path you should add the jar as a dependency in your project's pom file. You may also need to add the repository reference to the pom if the jar is coming from a private repository. Once your pom file is modified with the reference to the jar then you can select your project and click "Maven -> Update project dependencies". Maven will download the jar and modify your class path.
If you want to actually look at the source then look for a reference on the 3rd party's web site to the repository containing the source code. Use the appropriate Eclipse plugin (git, svn, etc.) to point to and checkout the version of the source.

If you want to import the jar on your project, put this on your <dependecies> tag in pom.xml on root of your project:
<dependency>
<groupId>com.orientechnologies</groupId>
<artifactId>orientdb</artifactId>
<version>1.3.0</version>
</dependency>
From Maven Repository
This will import the jar on your project lib folder.
Anyway, if you want to modify code from this lib, you need to create a new Project with content of this jar. Package as jar on maven and put as dependencie.