[don't use it] wrapper => command line arguments parser library

CommandLineOption.java

import java.util.List;

import com.sampullara.cli.Args;
import com.sampullara.cli.Argument;

class CommandLineOption {

	@Argument(value = "help", alias = "h")
	private Boolean helpFlag = false;

	List<String> extra = null;

	@Argument(value = "port", alias = "p", description = "This is the port number")
	Integer portNo;

	CommandLineOption(String[] args) {
		if (args == null) {
			args = new String[] {};
		}
		try {
			extra = Args.parse(this, args);
		} catch (IllegalArgumentException e) {
			System.err.println(e.getLocalizedMessage());
			System.exit(1);
		}
		if (helpFlag) {
			Args.usage(this);
			System.exit(0);
		}
	}

}

for pom.xml

    <dependency>
      <groupId>com.google.code.cli-parser</groupId>
      <artifactId>cli</artifactId>
      <version>7</version>
    </dependency>