import org.apache.commons.cli.*;
public class MyCLIApp {
public static void main(String[] args) {
Options options = new Options();
options.addOption("h", "help", false, "Display help information");
options.addOption("g", "greet", true, "Greet the specified name");
CommandLineParser parser = new DefaultParser();
try {
CommandLine cmd = parser.parse(options, args);
if (cmd.hasOption("h")) {
printHelp(options);
} else if (cmd.hasOption("g")) {
String name = cmd.getOptionValue("g");
System.out.println("Hello, " + name + "!");
} else {
System.out.println("No command specified. Use -h or --help for more information.");
}
} catch (ParseException e) {
System.out.println("Invalid command. Use -h or --help for more information.");
}
}
private static void printHelp(Options options) {
HelpFormatter formatter = new HelpFormatter();
formatter.printHelp("mycliapp", options);
}
}
