Interview Question: Determine Whether a Text includes all ASCII characters

import java.util.Arrays;

import java.util.Scanner;

import java.io.UnsupportedEncodingException;





public class ASCII {



 /**

  * @param args

  * @throws UnsupportedEncodingException 

  */

 static String text = "";

 static boolean[] counter = new boolean[256];



 public static void main(String[] args) throws UnsupportedEncodingException {



  while (text == "") { 

   System.out.println("Enter Your Text and Press ENTER:");

   text = readText();

  }



  byte[] result = text.getBytes("US-ASCII");

  long[] intResult = new long[result.length];

  long value = 0;

  //Converting Byte Array to its Integer equivalence

  for (int i = 0; i < result.length; i++)

  {

     value = (value << 8) + (result[i] & 0xff);

     intResult[i]= value;

     value=0;

  }

  long[] sortResult = sortArray(intResult);



  if (hasAllASCIIChars(sortResult))

   System.out.println("Text has all ASCII characters");

  else

   System.out.println("Text does not have all ASCII characters");

 }



 



 /**

  * 

  * @param sortedArray: sorted array of ASCII Codes of characters (Long)

  * @return

  */

 private static boolean hasAllASCIIChars(long[] sortedArray) {



  for (int i = 0; i< sortedArray.length - 1; i++) 

   if (!counter[(int)sortedArray[i]])

    counter[(int)sortedArray[i]] = false;



  for (boolean bool : counter)

   if (bool == false)

    return false;

  return true;  

 }



 public static String readText() {

  Scanner sc = new  Scanner(System.in);

  if (sc.hasNext()) {

   return sc.nextLine();

  }

  else {

   return "";

  }

 }



 



 public static long[] sortArray(long[] array) {

  Arrays.sort(array);

  return array;

 }

}