question: @ Override public boolean open ( String access ) { if ( access . equals ( "r" ) ) { try { iStream = new FileImageInputStream ( new File ( filePath ) ) ; parser = new LabelParser ( ) ; metadata = parser . parseHeader ( iStream ) ; iStream . close ( ) ; iStream = null ; } catch ( IOException e ) { try { iStream . close ( ) ; } catch ( Exception x ) { } return ( false ) ; } } return ( super . open ( access ) ) ; }
target:  Open the PDS file.