Java Command-Line Arguments

In Java, command-line arguments are pieces of data that can be passed to a Java program when it is executed from the command line. These arguments are passed as an array of strings to the main method of the program, which is the entry point of the program.

Here is an example of how to access command-line arguments in a Java program:

public class Main {
  public static void main(String[] args) {
    // Print the first command-line argument
    System.out.println(args[0]);

    // Print the second command-line argument
    System.out.println(args[1]);

    // Print all command-line arguments
    for (String arg : args) {
      System.out.println(arg);
    }
  }
}

To pass command-line arguments to a Java program, you can specify them after the name of the program when you execute it from the command line. For example:

java Main arg1 arg2 arg3

In this example, the args array in the main method will contain the following elements:

args[0] = "arg1"
args[1] = "arg2"
args[2] = "arg3"

You can use command-line arguments to pass input data to your Java program or to control its behavior.