Sorting an ArrayList using Collections sort method

This code can help in sorting an ArrayList using Collections.sort() method. Here in the example, we have passed string values & these are sorted alphabetically in ascending & descending order.

import java.util.ArrayList; 
import java.util.Arrays; 
import java.util.Collections; 
import java.util.List;   
public class ArrayListSortExample 
{   
  public static void main(String[] args) 
{        
 
/*           Create a collections of colours          */   
   List colours = new ArrayList();       
  colours.add("red");        
 colours.add("green");        
 colours.add("blue");       
colours.add("yellow");      
   colours.add("cyan");       
  colours.add("white");       
  colours.add("black");     


Collections.sort(colours);        
 System.out.println(Arrays.toString(colours.toArray()));       
    Collections.sort(colours, Collections.reverseOrder());     
    System.out.println(Arrays.toString(colours.toArray()));   
   } 
} 

/*
Output : 

[black, blue, cyan, green, red, white, yellow]
[yellow, white, red, green, cyan, blue, black]
*/

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