Bug 97167 wrong proposals for linked folder in New Java Project>Link Additional Resource
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/newsourcepage/LinkFolderDialog.java
return nameStatus;
            }
            
            IPath path = new Path(name);
            if (fContainer.findMember(path) != null) {
            	return new StatusInfo(IStatus.ERROR, Messages.format(NewWizardMessages.NewFolderDialog_folderNameEmpty_alreadyExists, name)); 
            }
            return nameStatus;
        }
    }
    
    private FolderNameField fFolderNameField;
    private LinkFields fDependenciesGroup;
    private IContainer fContainer;
	private IFolder fCreatedFolder;
    /**
     * Creates a NewFolderDialog
     * 
     * @param parentShell parent of the new dialog
     * @param container parent of the new folder
     * 
     * @see HintTextGroup
     */
    public LinkFolderDialog(Shell parentShell, IContainer container) {
        super(parentShell);
        fContainer = container;
        setTitle(NewWizardMessages.LinkFolderDialog_title); 
        setShellStyle(getShellStyle() | SWT.RESIZE);
        setStatusLineAboveButtons(true);      
    }