CommandLineMaxFinder.java

public class CommandLineMaxFinder {
    public static void main(String[] args) {
        // Check if no arguments were passed at all
        if (args.length == 0) {
            System.out.println("Error: No arguments provided. Please provide at least one integer.");
            System.out.println("Usage Example: java CommandLineMaxFinder 10 25 5");
            return;
        }

        int max = Integer.MIN_VALUE;
        boolean foundValidInt = false;

        System.out.println("--- Processing Command Line Arguments ---");

        // Iterate through all provided arguments
        for (String arg : args) {
            try {
                // Attempt to parse the string argument into an integer
                int currentNum = Integer.parseInt(arg);
                
                // If it's the first valid integer found, it becomes our initial max
                if (!foundValidInt) {
                    max = currentNum;
                    foundValidInt = true;
                } else if (currentNum > max) {
                    // Update max if the current number is larger
                    max = currentNum;
                }
            } catch (NumberFormatException e) {
                // Handle the case where the user typed a word or symbol instead of a number
                System.out.println("Warning: '" + arg + "' is not a valid integer and will be ignored.");
            }
        }

        // Final output based on whether valid integers were found
        System.out.println("-----------------------------------------");
        if (foundValidInt) {
            System.out.println("The largest integer provided is: " + max);
        } else {
            System.out.println("Error: No valid integers were provided in the arguments.");
        }
    }
}