Design a program that creates a StringTooLongException, say greater than 20 char

Question

Design a program that creates a StringTooLongException, say greater than 20 characters and handles the error with a message and continues processing more strings. Create another exception called InvalidDocumentCodeException which is thrown when an improper designation for adocument is encountered. All documents are given a 2 character designation, starting  with U, C, or P. If a document designation is encountered that does not fit the description, an exception is thrown and handles the exception and continue the processing.

Explanation / Answer

/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone{
   public static boolean InvalidDocumentCodeException(String s){
       if (s.length() > 2) return true;
       if (s.charAt(0) == "U" || s.charAt(0) == "C" || s.charAt(0) == "P") return false;
       return true;
   }
   public static boolean StringTooLongException(String s){
       if (s.length() > 20) return true;
       return false;
   }
   public static void main (String[] args) throws java.lang.Exception{
       Scanner sc = new Scanner(System.in);
       System.out.print("Enter the Line separated by space : ");
       String[] arr = sc.nextLine().split(" ");
       for (int i =0; i < arr.length; i++){
           if (StringTooLongException(arr[i]) == true){
               System.out.println(arr[i]+" is too long");
           }
       }
   }
}

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