Вариант 2-02

public class Main {

    public static void main(String[] args) {
	    System.out.println("Arguments count: " + args.length);
        for (int i = 0; i < args.length; i++) {
            String type = args[i].matches("[+-]?\\d*\\.\\d+") ? "Decimal" : "String";
            System.out.println(args[i] + " <" + type + ">");
        }
    }
}