Question

I’m new to Maven. I’m trying to build a test project, which includes log4j.
My java class is just a ‘hello world’ with an import for log4j like this:

import org.apache.log4j.Logger;

My pom.xml includes the following section:

<build>
...
    <dependencyManagement>
    <dependencies>
          <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.12</version>
          </dependency>
      </dependencies>
    </dependencyManagement>
...
</build>

I haven’t downloaded log4j jars at this point …..

I run:

mvn install.

I get:

...
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Compilation failure
App.java:[2,23] package org.apache.log4j does not exist
...

So I am obviously misunderstanding how Maven works here….

I thought I should be able to ship (as a minimum) a ‘pom.xml’ and my code to another user, and Maven should fetch the deps ?

Answer 1

Welcome to the Maven world 😉

You have to remove the <dependencyManagement> tags, it should work.

This tag is used when you use Maven modules (see the Maven doc)