How do I parse command line arguments in Java?

Question

What is a good way of parsing command line arguments in Java?

Answer 1

I know most people here are going to find 10 million reasons why they dislike my way, but nevermind. I like to keep things simple, so I just separate the key from the value using a '=' and store them in a HashMap like this:

Map argsMap = new HashMap<>();
for (String arg: args) {
    String[] parts = arg.split("=");
    argsMap.put(parts[0], parts[1]);
} 

You could always maintain a list with the arguments you are expecting, to help the user in case he forgot an argument or used a wrong one... However, if you want too many features this solution is not for you anyway.