Apache Commons CLI - GNU Parser

Pengurai GNU digunakan untuk mengurai gnu seperti argumen yang diteruskan. Sekarang sudah tidak digunakan lagi dan diganti oleh DefaultParser.

Contoh

CLITester.java

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;

public class CLITester {
   public static void main(String[] args) throws ParseException {
      
      //Create GNU like options
      Options gnuOptions = new Options();
      gnuOptions.addOption("p", "print", false, "Print")
         .addOption("g", "gui", false, "GUI")
         .addOption("n", true, "Scale");

      CommandLineParser gnuParser = new GnuParser();
      CommandLine cmd = gnuParser.parse(gnuOptions, args);
      
      if( cmd.hasOption("p") ) {
         System.out.println("p option was used.");
      }
      if( cmd.hasOption("g") ) {
         System.out.println("g option was used.");
      }
      if( cmd.hasOption("n") ) {
         System.out.println("Value passed: " + cmd.getOptionValue("n"));
      }
   }
}

Keluaran

Jalankan file sambil meneruskan -p -g -n 10 sebagai opsi dan lihat hasilnya.

java CLITester -p -g -n 10
p option was used.
g option was used.
Value passed: 10