Can you inherit the version from the parent POM in Maven? [duplicate]

Question

This question already has answers here:

Maven project version inheritance - do I have to specify the parent version? (9 answers)

Closed 7 years ago.

I have a bunch of projects like:

project1
project2
project3
........
project111

Each project compiled in jar: project-1.1.1.1.jar, .... Does it possible in parent folder add pom.xml so I can define version 1 time for all projects?

Answer 1

If you omit <version/> it inherits from the parent. However, the <parent/> element must contain a <version/> for the parent, so the version must occur in every single POM, but only once.

Answer 2

You can do this:

parent pom.xml:
<project>
  ...
  <version>${my-project-version}</version>
  ...
  <properties>
    <my-project-version>1.1.1</my-project-version>
  </properties>
</project>

child pom.xml:
<project>
  ...
  <parent>
    <relativePath>../parent/pom.xml</relativePath>
    <version>${my-project-version}</version>
  </parent>
  ...
</project>

At least, this works for me.

Answer 3

Using a property and referencing it works... unless you are using the release plugin to do releases in which case it removes "-SNAPSHOT" from the version and automatically replaces all instances with the real version number - which overwrites any replacement variables you've set. You may be better off just setting it in each POM and using the release plugin to tag, increment, and release your project.