title: Java return index if value found in array
body: <p>I am trying to find a value in an array and I know for sure that this value will exist only once, so i am trying to find the value and return the index of the array where it is stored, if not found return -1
  This is what I am trying to do:</p>
  
  <pre><code>static Integer[] accs = new Integer[20];
   public static int search()
      {
          Integer[] numbers;
          numbers = accs;
          Integer key;
          Scanner sc = new Scanner(System.in);
           System.out.println("Enter the Account Number:");        
           key = sc.nextInt();
  
          for (Integer index = 0; index &lt; numbers.length; index++)
        {
             if ( numbers[index] == key )
                   return index;  //We found it!!!
        }
       // If we get to the end of the loop, a value has not yet
       // been returned.  We did not find the key in this array.
       return -1;
  
      }
  </code></pre>
  
  <p>When I run this even though I know that the value exists in the array, nothing is being displayed. I debugged and then I found out that the Key variable is not having the value of what I typed. Is something wrong there?</p>