1.Basic Java example program to sort arraylist of strings
OUTPUT::
- package com.javasortarraylistofobjects;
- import java.util.ArrayList;
- import java.util.Collections;
- import java.util.Iterator;
- public class SortArrayList{
- public static void main(String[] args) {
- //create an ArrayList object
- ArrayList<String> arrayList = new ArrayList();
- //Add elements to Arraylist
- arrayList.add("A");
- arrayList.add("C");
- arrayList.add("D");
- arrayList.add("Z");
- arrayList.add("F");
- arrayList.add("J");
- arrayList.add("K");
- arrayList.add("M");
- arrayList.add("L");
- arrayList.add("O");
- System.out.println("Before sorting ArrayList ...");
- Iterator itr=arrayList.iterator();
- while (itr.hasNext()) {
- System.out.println(itr.next());
- }
- /*
- To sort an ArrayList object, use Collection.sort method. This is a
- static method. It sorts an ArrayList object's elements into ascending order.
- */
- Collections.sort(arrayList);
- System.out.println("After sorting ArrayList ...");
- Iterator itr1=arrayList.iterator();
- while (itr1.hasNext()) {
- System.out.println(itr1.next());
- }
- }
- }
OUTPUT::
- Before sorting ArrayList ...
- A
- C
- D
- Z
- F
- J
- K
- M
- L
- O
- After sorting ArrayList ...
- A
- C
- D
- F
- J
- K
- L
- M
- O
- Z
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