 
        
          Click 
           Window > Open Perspective
          > Other... > Java to change to the Java
          perspective.
        
          Click 
           File > New >
          Other... > Java Project to open the New Java
          Project wizard.
        
Type "Product1" in the Project name field. Click Next.
           
        
On the next page, Select "Product1" source folder.
          Click Link additional source link in
          Details pane or button  in view bar.
        
           
        
          In Link Source click Browse.... and
          choose the D:\Product1\JavaSourceFiles directory.
        
Type "src" in the Folder name field.
           
        
Click Finish to validate and close the dialog.
          Again, Select "Product1" and click Link additional
          source link in Details pane or button
           in view bar.
        
           
        
          In Link Source click Browse.... and
          choose the D:\Framework\JavaSourceFiles
          directory.
        
Type "src-common" in the Folder name field.
           
        
Click Finish to validate and close the dialog.
Your project source setup now looks as follows:
           
        
          Create project "Product2" repeating steps 2 to 5 choosing
          D:\Product2\JavaSourceFiles directory for source
          folder instead.
        
Click on Finish to create the project immediately.
Now, we'll see how to add a linked source folder when project is already created in workspace...
Edit project "Product2" properties and select Java Builder Path page.
On Source tab, click Link Source....
           
        
          In Link Source click Browse.... and
          choose the D:\Framework\JavaSourceFiles
          directory.
        
Type "src-common" in the Folder name field.
           
        
Click Finish to validate and close the dialog.
Click OK to apply project "Product2" properties changes.
          