How do I create two files and two classes that one file has all the methods and

Question

How do I create two files and two classes that one file has all the methods and other file just ask for the string input? I need to use a CONSTRUCTOR.

import java.util.Scanner;

class PalindromeDitactor {

public static boolean Palindrome(String input) {

if(input.length()==1 || input.charAt(0)==input.charAt(1)) {

return true; }

if(input.charAt(0)==input.charAt(input.length()-1)) {

return Palindrome(input.substring(1,input.length()-1)); }

return false;

}

public static void main (String[]args) {

Scanner kb = new Scanner(System.in);

System.out.print("Please enter a string: ");

String userString = kb.nextLine();

if(Palindrome(userString))

System.out.println("It is a palindrome.");

else

System.out.println("It isn't a palindrome."); } }

Explanation / Answer

Solution: using constructor you can do like follows:

package com.nancy.chegg;

import java.util.Scanner;

public class PalindromeDitactor extends Util {
   static boolean res = false;
   PalindromeDitactor(String input){
       res = fun(input);
   }
   public static void main(String[] args) {
       Scanner kb = new Scanner(System.in);
       System.out.print("Please enter a string: ");
       String userString = kb.nextLine();
       new PalindromeDitactor(userString);
       if (res)
           System.out.println("It is a palindrome.");
       else
           System.out.println("It isn't a palindrome.");
   }
}

______________________________________

package com.nancy.chegg;

public class Util {

   public boolean fun(String input){
       if (input.length() == 1 || input.charAt(0) == input.charAt(1)) {
           return true;
       }

       if (input.charAt(0) == input.charAt(input.length() - 1)) {
           return fun(input.substring(1, input.length() - 1));
       }
       return false;
   }
}

__________________________________________________________

Sample run;

Please enter a string: nanan
It is a palindrome.

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.