AddException.java Source code

Introduction

Here is the source code for AddException.java

Source

/** Show use of Argv to get an integer value from command line */
public class AddException {
    /** Main program */
    public static void main(String[] argv) {
        int number = 0;

        System.out.println("The number of words in argv is " + argv.length);

        if (argv.length == 0) {
            number = 1234;
        } else if (argv.length == 1) {
            try {
                number = Integer.parseInt(argv[0]);
            } catch (NumberFormatException e) {
                System.err.println("Number " + argv[0] + " invalid (" + e.getMessage() + ").");
                System.exit(1);
            }
        } else {
            System.err.println("usage: UseArgv number");
            System.exit(1);
        }

        System.out.println("OK, number is " + number);
    }
}