public CacheObject load(Object key){
  if (key != null) {
    String dtedFramePath=key.toString();
    DTEDSubframedFrame frame=new DTEDSubframedFrame(dtedFramePath,dtedFramePath.endsWith("dt0"));
    frame.initSubframes(numXSubframes,numYSubframes);
    if (frame.frame_is_valid) {
      return new DTEDCacheObject(dtedFramePath,frame);
    }
  }
  return null;
}

public CacheObject load ( Object key ) { if ( key != null ) { String dtedFramePath = key . toString ( ) ; DTEDSubframedFrame frame = new DTEDSubframedFrame ( dtedFramePath , dtedFramePath . endsWith ( "dt0" ) ) ; frame . initSubframes ( numXSubframes , numYSubframes ) ; if ( frame . frame_is_valid ) { return new DTEDCacheObject ( dtedFramePath , frame ) ; } } return null ; }
load a dted frame into the cache , based on the path of the frame as a key .
