Maven parent pom variables are not resolved

Question

I have the following POM structure:

./foobar-common/pom.xml ./abc-window/pom.xml ./abc-datasource/pom.xml

Both abc-window pom.xml is as follows:

Answer 1

Use dependencyManagment in parent pom

  
    
       junit
       junit
       ${junit.version}
    
    
       org.apache.commons
       commons-lang3
       ${commons-lang3.version}
    
    
    

add all versions in parent pom, and use dependencies without version in children

EDIT

/pom.xml                 <-parent pom
/abc-window/pom.xml     <-child module  
/abc-datasource/pom.xml <-child module  

and parent pom should contains

   
    ... 
     
     
      abc-datasource
      abc-window  
      
   
         
       ...
      
   
   
    ...