Options options = new Options();
Option inputOption = new Option("i", "input", true, "input file");
options.addOption(inputOption);
CommandLineParser parser = new DefaultParser();
CommandLine cmd = parser.parse(options, args);
String inputFile = cmd.getOptionValue("i");
Option sizeOption = new Option("s", "size", true, "size of the file");
sizeOption.setType(Integer.class);
sizeOption.setRequired(true);
sizeOption.setValidator(new NumericValidator());
options.addOption(sizeOption);
import org.apache.commons.cli.*;
public class CommandLineApp {
public static void main(String[] args) {
Options options = new Options();
Option inputOption = new Option("i", "input", true, "input file");
options.addOption(inputOption);
CommandLineParser parser = new DefaultParser();
try {
CommandLine cmd = parser.parse(options, args);
String inputFile = cmd.getOptionValue("i");
System.out.println("Input file: " + inputFile);
} catch (ParseException e) {
System.out.println("Error parsing command line parameters: " + e.getMessage());
}
}
}
<dependency>
<groupId>commons-cli</groupId>
<artifactId>commons-cli</artifactId>
<version>1.4</version>
</dependency>
