Currently I'm having the problem that I have an Java project which was created with eclipse and which should now be builded with maven. I haven't created this project I just need to migrate it. The problem here is that I have a bunch of 3rd party jar's which need to be included to properly build the project. I know nothing about these jars (and I actually don't care what they do and where the came from).

I managed to find resources on how to add these jar's via command line to ma local repro and I further created a pom.xml which does the job for me (so I don#t need to use the command line) but somehow its not working properly. I doen't matter if I use the command line or the pom.xmo, non of the two approaches works for me. When i run the pom.xml

```
<?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>
   <parent>
      <groupId>common</groupId>
      <artifactId>common.master</artifactId>
      <relativePath>../pom.xml</relativePath>
      <version>1.0.0-SNAPSHOT</version>
   </parent>
   <groupId>common</groupId>
   <artifactId>org.proj4j</artifactId>
   <name>org.proj4j</name>
   <version>0.1.0</version>
   <packaging>jar</packaging>
   <build>
      <sourceDirectory>src/</sourceDirectory>
      <plugins>
         <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.2</version>
            <configuration>
               <source>${jdk.version}</source>
               <target>${jdk.version}</target>
            </configuration>
         </plugin>
<plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.4</version>
          <executions>
            <execution>
              <id>install1</id>
              <phase>package</phase>
              <goals>
                <goal>install-file</goal>
              </goals>
              <configuration>
                <file>proj4j-0.1.0.jar</file>
                <groupId>common</groupId>
                <artifactId>org.proj4j</artifactId>
        <name>proj4j</name>
                <version>0.1.0</version>
        <packaging>jar</packaging>
              </configuration>
            </execution>
            <execution>
              <id>install2</id>
              <phase>package</phase>
              <goals>
                <goal>install-file</goal>
              </goals>
              <configuration>
                <file>proj4j-support-0.1.0.jar</file>
                <groupId>common</groupId>
                <artifactId>org.proj4j</artifactId>
        <name>proj4j-support</name>
                <version>0.1.0</version>
        <packaging>jar</packaging>
              </configuration>
            </execution>
          </executions>
        </plugin>
      </plugins>
   </build>
</project>

```

the jars are put into my local repro under the specified group id, artifact ID etc. But the compiler still fails with an `Unknown Symbol Error` which says that the required class could not be found during compilation. I guess the reason are the artifact ID and the group ID because I came up with them. They are not related to my 3rd party jars at all. But I also don't know the proper group ID / artifact ID's because i know nothing about the jars. They are also partially self written by colleges.

What can I do to make maven find the required libs and to resolve all missing classes. Like I already said, with eclipse everything runs fine and without any problems. Shouldn't it be possible put the jar somehow into one folder in my local repro and tell the compiler *If you search for anything start looking here* ?