arraylist reverse sort in java code example

Example 1: how to reverse order of arraylist

ArrayList<Integer> arrlist = new ArrayList<Integer>();
//This is how to reverse arrlist's oringinal order.
Collections.reverse(arrlist);

//This is how to sort in a reverse order
 Collections.sort(arrlist, Collections.reverseOrder());

Example 2: java list sort descending

import java.util.*;
public class Details  {

	public static void main(String args[]){
	   ArrayList<String> arraylist = new ArrayList<String>();
	   arraylist.add("AA");
	   arraylist.add("ZZ");
	   arraylist.add("CC");
	   arraylist.add("FF");

	   /*Unsorted List: ArrayList content before sorting*/
	   System.out.println("Before Sorting:");
	   for(String str: arraylist){
			System.out.println(str);
		}

	   /* Sorting in decreasing order*/
	   Collections.sort(arraylist, Collections.reverseOrder());

	   /* Sorted List in reverse order*/
	   System.out.println("ArrayList in descending order:");
	   for(String str: arraylist){
			System.out.println(str);
		}
	}
}