Answer to Question #306088 in Java | JSP | JSF for linda

Question

Control Structures: As a build up from the previous question, consider 3 possible scenario of input : A character, number or word. You program should the do the following: In case the input is a character it should indicate if it’s a vowel or not, when a number is entered then it’s should check if it’s a prime and finally if a word is entered the system should check if it’s a palindrome or not. Sample Run1 Sample Run3 Enter a character, number or word: c Enter a character, number or word: 7 Output1: C is not a vowel Output3: 7 is a prime number Sample Run2 Enter a character, number or word: programming Output2: Programming is not a palindrome

Answer 1

import java.util.Scanner;




import java.math.*;




import java.io.*; 




import java.util.*;




import java.lang.StringBuilder;










public class Sample{




 public static void main(String args[]) {




  // read keyboard input

   Scanner in = new Scanner(System.in);

   String input = in.nextLine();




  // check for vowels

  if(input.matches("[aeiouy]")){




   




   System.out.println("it’s a vowel");




   

  // check for number

  }else if(input.matches("\\d+")){




    




    int number = Integer.parseInt(input);




    BigInteger bigInteger = BigInteger.valueOf(number);

     

    // check for prime number




    boolean probablePrime = bigInteger.isProbablePrime((int) Math.log(number));




     

     

    if(probablePrime){




     System.out.println("it’s a prime");




    }else{




     System.out.println("it’s not a prime");




    }




  // check for word

  }else if(input.length() > 1){




    // reverse word then compare without upper case

   int boolPalindrome = input.compareToIgnoreCase(new StringBuilder(input).reverse().toString());




    

  // check for palindrome from result

   if(boolPalindrome == 0){




    System.out.println("It's a palindrome");




   }else{




    System.out.println("It's not a palindrome");




   }




    




  }else{




   System.out.println("it’s not a vowel");




  }




    




 }




}