title: How to sort an array in reverse order using java?
body: <pre><code>package javaLearning;
  import java.util.Arrays;
  import java.util.Collections;
  
      public class myarray {
  
           public static void name() {
           String hello;
           hello = "hello, world";
           int hello_len = hello.length();
           char[] hello_array = new char[hello_len];
           hello.getChars(0, hello_len, hello_array, 0);
           Arrays.sort(hello_array, Collections.reverseOrder());
  }
  </code></pre>
  
  <p>the "myarray" class is defiend in a main method of a testing class.
  why does it give me a compile error when I try reversing the array?</p>