question: @ Override public Enumeration < Option > listOptions ( ) { Vector < Option > newVector = new Vector < Option > ( ) ; newVector . addElement ( new Option ( "\tThe input file" , "i" , 1 , "-i <the input file>" ) ) ; newVector . addElement ( new Option ( "\tThe output file" , "o" , 1 , "-o <the output file>" ) ) ; return newVector . elements ( ) ; }
target:  Returns an enumeration describing the available options.