helloWorldParamaterized.java

import org.kohsuke.args4j.CmdLineParser;
import org.kohsuke.args4j.Option;

/**
 * Hello world! class that is paramaterized (with defaults) using arg4j.
 * Example cli usage: java -jar helloWorldParamaterized --msg='Hello arg4j!'
 */
public class helloWorldParamaterized 
{

    @Option(name="--msg")
    private String msg = "Hello World!";

    public static void main(String[] args) throws Exception {
        new helloWorldParamaterized().doMain(args);
    }

    public void doMain(String[] args) throws Exception {

        // make a parser
        CmdLineParser parser = new CmdLineParser(this);
        
        // parse args
        parser.parseArgument(args);

        // print message passed in from args
        System.out.println(msg);

    }

}