Not so well known IntelliJ keyboard sortcuts

IntelliJ is well known for its heavy use of keyboard shortcuts.
Many times you don't even know that a shortcut exists.

This blog shows how to refactor maven's pom.xml
https://blog.jetbrains.com/idea/2010/04/maven-refactorings-introduce-property/

Select the dependency version then:
Ctrl-Alt-V (Extract property) 
will introduce a version property.

Display the value of a property with Maven

Sometime you need to know the value of a property in you maven scripts.
This happend to me when there were to many profiles.

So can just write the value of a property.
Add this plugin definintion in you build section
et voilà

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-antrun-plugin</artifactId>
  <version>1.1</version>
  <executions>
    <execution>
      <phase>validate</phase>
      <goals>
        <goal>run</goal>
      </goals>
      <configuration>
       <tasks>
         <echo>Displaying value of 'myProperty' property</echo>
         <echo>[myProperty] ${myProperty}</echo>
       </tasks>
      </configuration>
    </execution>
  </executions>
</plugin>

Thank you http://www.avajava.com/tutorials/lessons/how-do-i-display-the-value-of-a-property.html