Why I can't parse Options with using Apache CLI

Question

My problem is when I create Options instance, and set there data, it can't read a value from my static field "ITEM_COUNT". Can't understand what problem is this?

public class Main {

    public static final String ITEM_COUNT = "100";

    public static void main( String [] args ) throws ParseException, FileNotFoundException {


        Options options = new Options();
        options.addOption(ITEM_COUNT, true, "The number of items being simulated" );

        CommandLineParser parser = new DefaultParser();
        CommandLine cmd = parser.parse( options, args );

// there I have NumberFormatException:null, the value from ITEM_COUNT is null

        Integer item_count = Integer.valueOf(cmd.getOptionValue(ITEM_COUNT)); 

        Runner mockServer = new Runner();
        mockServer.initialize(item_count);
        mockServer.start();

    }
}

Answer 1

You can run Run -> Edit Configuration -> Program arguments -> -name_of_arg value_of_arg.