Adding external jar libraries to maven project

You have to add something like this in your pom.xml:
    <dependency>
        <groupId>com.xxx.yyy.messages</groupId>
        <artifactId>xxxyyyMessages2</artifactId>
        <version>2.0-SNAPSHOT</version>
        <scope>system</scope>
        <systemPath>${project.basedir}/../xxxyyyMessages2/target/xxxyyyMessages2-2.0-SNAPSHOT.jar</systemPath>
    </dependency>