void openBuffer(){
  if (buffer == null) {
    try {
      buffer=input.map(MapMode.READ_ONLY,0,input.size());
    }
 catch (    IOException e) {
      throw new AbortException("Cannot map input bundle.",e);
    }
  }
}

void openBuffer ( ) { if ( buffer == null ) { try { buffer = input . map ( MapMode . READ_ONLY , 0 , input . size ( ) ) ; } catch ( IOException e ) { throw new AbortException ( "Cannot map input bundle." , e ) ; } } }
map the input file .
