Java Arrays binarySearch方法

package com.codingdict;

import java.util.Arrays;

public class ArrayDemo {
   public static void main(String[] args) {

      // initializing unsorted byte array
      byte byteArr[] = {10,20,15,22,35};

      // sorting array
      Arrays.sort(byteArr);

      // let us print all the elements available in list
      System.out.println("The sorted byte array is:");
      for (byte number : byteArr) {
         System.out.println("Number = " + number);
      }

      // entering the value to be searched
      byte searchVal = 35;

      // entering the range of index
      int retVal = Arrays.binarySearch(byteArr,2,5,searchVal);

      System.out.println("The index of element 35 is : " + retVal);
   }
}