How To Sort An ArrayList In Java

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
 
public class SortArrayList{
 
 public static void main(String args[]){
 
  List<String> unsortList = new ArrayList<String>();
 
  unsortList.add("CCC");
  unsortList.add("111");
  unsortList.add("AAA");
  unsortList.add("BBB");
  unsortList.add("ccc");
  unsortList.add("bbb");
  unsortList.add("aaa");
  unsortList.add("333");
  unsortList.add("222");
 
  //before sort
  System.out.println("ArrayList is unsort");
  for(String temp: unsortList){
   System.out.println(temp);
  }
 
  //sort the list
  Collections.sort(unsortList);
 
  //after sorted
  System.out.println("ArrayList is sorted");
  for(String temp: unsortList){
   System.out.println(temp);
  }
 }
 
}

Output


ArrayList is unsort
CCC
111
AAA
BBB
ccc
bbb
aaa
333
222
ArrayList is sorted
111
222
333
AAA
BBB
CCC
aaa
bbb
ccc