Question

Write a complete main method that does the following: Takes any number, but at least two, command line arguments which are words (represented as strings) and will print to the console the number of words of that end with a digit. (Hint: loop through the args array)

If there are not at least two command line arguments, throw an IllegalArgumentException with an appropriate message.

Answer 1

Please find the code below:

public class CLA {
        public static void main(String[] args) throws IllegalArgumentException{
                if(args.length < 2) //if less than 2 words entered
                {
                        throw new IllegalArgumentException("Enter more than 2 args"); //throw exception
                }
                else
                {
                        int count = 0; //count of words
                        for(String s : args) //iterate through args
                        {
                                if(Character.isDigit(s.charAt(s.length() - 1))) //if character at last index is a digit
                                {
                                        count++; //increment count
                                }
                        }
                        System.out.println("Number of words that end with a number are : "+count); //display count
                }
        }
}

Supplied Input:

Corresponding Output:

Number of words that end with a number are : 3

Thanks, Please upvote if you appreciate the effort. :)