Application: gvSIG desktop

        <field name="folderManagerPaths" type="Map" classOfItems="java.lang.String" mandatory="false">

          <description></description>

        </field>

        try {

            PluginsManager pluginManager = PluginsLocator.getPluginsManager();

            PluginServices plugin = pluginManager.getPlugin(this);

            DynObject preferences = plugin.getPluginProperties();        

            Map<String,String>paths = (Map<String,String>) preferences.getDynValue("folderManagerPaths");  

            if( paths!=null ) {

                for (Map.Entry<String, String> path : paths.entrySet()) {

                    String name = path.getKey();

                    String path_s = path.getValue();

                    folderManager.set(name, new File(path_s));

                }

            }

            pluginManager.addShutdownTask("saveFolderManagerPaths", () -> {

              doFolderManagerPaths();

            }, false, 100);

        } catch (Exception ex) {

            LOGGER.warn("Can't restore folder manager paths.", ex);

        }

    private void doFolderManagerPaths() {

        FoldersManager folderManager = ToolsLocator.getFoldersManager();

        PluginsManager pluginManager = PluginsLocator.getPluginsManager();

        PluginServices plugin = pluginManager.getPlugin(this);

        DynObject preferences = plugin.getPluginProperties();        

        Map<String,String> paths = new HashMap<>();

        for (String name: folderManager) {

            File f = folderManager.get(name);

            if( f!=null ) {

                paths.put(name, f.getAbsolutePath());

            }

        }

        preferences.setDynValue("folderManagerPaths",paths); 

    }