Maven:
<dependency>
<groupId>net.sourceforge.argparse4j</groupId>
<artifactId>argparse4j</artifactId>
<version>0.9.0</version>
</dependency>
Gradle:
groovy
dependencies {
implementation 'net.sourceforge.argparse4j:argparse4j:0.9.0'
}
import net.sourceforge.argparse4j.ArgumentParsers;
import net.sourceforge.argparse4j.impl.Arguments;
import net.sourceforge.argparse4j.inf.ArgumentParser;
import net.sourceforge.argparse4j.inf.ArgumentParserException;
import net.sourceforge.argparse4j.inf.Namespace;
public class CommandLineParser {
public static void main(String[] args) {
ArgumentParser parser = ArgumentParsers.newFor("CommandLineParser").build()
.description("This is a command line parser example.");
parser.addArgument("-f", "--file")
.required(true)
.help("Path to the input file.");
parser.addArgument("-v", "--verbose")
.action(Arguments.storeTrue())
.help("Enable verbose mode.");
parser.addArgument("-n", "--number")
.type(Integer.class)
.setDefault(1)
.help("Number of iterations.");
try {
Namespace namespace = parser.parseArgs(args);
String inputFile = namespace.getString("file");
boolean isVerbose = namespace.getBoolean("verbose");
int iterations = namespace.getInt("number");
System.out.println("Input file: " + inputFile);
System.out.println("Verbose mode: " + isVerbose);
System.out.println("Iterations: " + iterations);
} catch (ArgumentParserException e) {
parser.handleError(e);
System.exit(1);
}
}
}
bash
java CommandLineParser -f input.txt -v -n 5
Input file: input.txt
Verbose mode: true
Iterations: 5
