Question

JAVA

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 length three. (Hint: loop through the args array)

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

For ex: Mary had a little cat: there are 2 words of length three

Answer 1

code

public class MyClass {
    public static void main(String args[]) {
    int n=0; 
    if(args.length < 2)
      throw new IllegalArgumentException("Less than 2 command line arguments given ");
     else
     {   for(int i = 0; i<args.length; i++) {
           if(args[i].length() == 3)
           { n = n+1;}
             }
             
          System.out.println("there are "+ n + " words of length three");
     }
         
     }
}

screenshot