how to setup maven project?

Question

I am trying to learn maven. So here is what I did.

1) Open eclipse.
2) New Project
3) create a package org.bar.foo;
4) Say thats all in my project and it has 3 files.. foo.java, bar.java and foobar.java

Now, when I look at my directory structure... it looks like

-src--org--bar--foo --all the files are here

Now.. on the top level next to src. I add a pom file..

I do mvn clean package.. Test passes..

But when I try to execute the jar, I get an error(class not found).

Turns out maven likes the directory structure to be

src--main--java--org--bar--foo.. and so on..

But now.. eclipse complains. change the package name from

org.bar.foo to main.java.org.bar.foo

I am trying to follow this example https://github.com/xamry/hadoop-examples

Answer 1

if you right click on eclipse top project, you can convert it to maven project, which I recommend.

Another way to do is to create a scratch project with mvn archetype:generate.