public String getPort() {
    if (local_port == null) {
      return null;
    }
    if (local_port.startsWith(":")) {
      local_port = local_port.substring(1);
    }
    if (local_port.equals(""))
      local_port = null;
    return local_port;
  }
VFS URIs validator

@author Stan Love <stanlove at users.sourceforge.net>
@version 0.0.4
olv-vfs/src/main/java/net/sf/vfsjfilechooser/utils/VFSURIValidator.java