Simplify Command-Line Argument Parsing

Simplify Command-Line Argument Parsing

ArgumentParser simplifies command-line argument processing by separating arguments into positional parameters and options (any argument starting with “-” or “/” is considered an option, which may specify a value). Construct an ArgumentParser instance with your command-line arguments, then ask the ArgumentParser for parameters and options:

 java YourClass -level=5 firstParam -verbose secondParamin    public static void main(String[] args) {        ArgumentParser p = new ArgumentParser(args);        if (p.hasOption("?") {            printUsage();        }        else {            boolean verboseMode = p.hasOption("verbose");            level = p.getOption("level");            doSomethingWithParams(p.nextParam(), p.nextParam());        }    }==================== ====================import java.util.*;public class ArgumentParser {    public ArgumentParser(String[] args) {        for (int i = 0; i < args.length; i++) {            if (args[i].startsWith("-") || args[i].startsWith("/")) {                int loc = args[i].indexOf("=");                String key = (loc > 0) ? args[i].substring(1, loc) :args[i].substring(1);                String value = (loc > 0) ? args[i].substring(loc+1) :"";                options.put(key.toLowerCase(), value);            }            else {                params.addElement(args[i]);            }        }    }    public boolean hasOption(String opt) {        return options.containsKey(opt.toLowerCase());    }    public String getOption(String opt) {        return (String) options.get(opt.toLowerCase());    }    public String nextParam() {        if (paramIndex < params.size()) {            return (String) params.elementAt(paramIndex++);        }        return null;    }    private Vector params = new Vector();    private Hashtable options = new Hashtable();    private int paramIndex = 0;}
Share the Post:
Heading photo, Metadata.

What is Metadata?

What is metadata? Well, It’s an odd concept to wrap your head around. Metadata is essentially the secondary layer of data that tracks details about the “regular” data. The regular

XDR solutions

The Benefits of Using XDR Solutions

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved

AI is revolutionizing fraud detection

How AI is Revolutionizing Fraud Detection

Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across

AI innovation

Companies Leading AI Innovation in 2023

Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several