How Does Java's `main` Method Handle Command-Line Arguments (String[] args)?

Exploring the String[] Args Parameter in Java's Main Method

In Java, the main method serves as the entry point for any program. It typically includes the following declaration:

public static void main(String[] args)

1. Understanding String[] args:

The String[] args parameter is an array of String objects that represents the command-line arguments passed to the program when it is executed. Each element in the array corresponds to a single command-line argument.

2. Utilizing Command-Line Arguments:

Command-line arguments are useful when you want to allow users to customize the behavior of your program. For example, you could use args to specify:

• Input files or directories
• Configuration parameters
• Logging options

Example:

Consider the following code:

public class ArgsExample {

    public static void main(String[] args) {
        for (int i = 0; i < args.length; i++) {
            System.out.println(args[i]);
        }
    }
}

If you execute this program in your terminal as:

C:/ java ArgsExample one two

The args array will contain the elements ["one", "two"]. When you run the program, it will print:

C:/ java ArgsExample one two
one
two

C:/

This demonstrates how you can retrieve and process command-line arguments in Java.

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