Java Collection Tutorial - Java Collections .reverseOrder ( Comparator <T> cmp)

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Syntax

Collections.reverseOrder(Comparator <T> cmp) has the following syntax.

public static <T> Comparator <T> reverseOrder(Comparator <T> cmp)

Example

In the following code shows how to use Collections.reverseOrder(Comparator <T> cmp) method.

import java.util.Collections;
import java.util.Comparator;
import java.util.LinkedList;
import java.util.List;
//from w w  w . ja  va2s .  c o m
public class Main {
   public static void main(String args[]) {  
      // create linked list object       
      List<Integer>  list = new LinkedList<Integer> ();  
      
      // populate the list 
      list.add(-2);  
      list.add(2);  
      list.add(-12);  
      list.add(8);  
      
      // create comparator for reverse order
      Comparator  cmp = Collections.reverseOrder(Collections.reverseOrder());  

      // sort the list
      Collections.sort(list, cmp);  
      
      System.out.println(list);

   }
}

The code above generates the following result.

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