title: How to import packages from a project to another
body: <p>I have two projects (let say project A and project B) the two works with Spring( The same version)the only difference is that the first one has an Eclipse IDE and the second one STS  and I want to use and work with the project A  in the project B. </p>
  
  <p>I've tried to manually copy/past a number of classes but the classes are so much dependent between them it makes it impossible.  </p>
  
  <p>I expect to show me how to import/export project A and use it in project B</p>