Parameters passed to a program

By looking at the header of the main method, we can observe that it takes as parameter an array of strings:

public static void main(String[] args)

Such an array contains the strings that are passed as arguments to the program when it is run from command line.

Example: Program that prints out the arguments passed on the command line:

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

Example of usage:

Note that the six strings "here", "are", "some", "command", "line", and "arguments" are the six arguments that are passed to the program when it is executed through the java command.