JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

Publish Your Article Here

Program: How to swap two elements in a ArrayList?


Description:

This example gives how to swap two elements in the ArrayList. By calling Collections.swap() method you can swap two elements of the ArrayList. You have to pass the indexes which you need to swap.


Code:
package com.java2novice.arraylist;

import java.util.ArrayList;
import java.util.Collections;

public class MyArrayListSwap {

	public static void main(String a[]){
		ArrayList<String> list = new ArrayList<String>();
		list.add("Java");
		list.add("Cric");
		list.add("Play");
		list.add("Watch");
		list.add("Glass");
		list.add("Movie");
		list.add("Girl");
		
		Collections.swap(list, 2, 5);
		System.out.println("Results after swap operation:");
		for(String str: list){
			System.out.println(str);
		}
	}
}

Output:
Results after swap operation:
Java
Cric
Movie
Watch
Glass
Play
Girl
<< Previous Program | Next Program >>

List Of All ArrayList Sample Programs:

  1. Basic ArrayList Operations.
  2. How to read all elements in ArrayList by using iterator?
  3. How to copy or clone a ArrayList?
  4. How to add all elements of a list to ArrayList?
  5. How to delete all elements from my ArrayList?
  6. How to find does ArrayList contains all list elements or not?
  7. How to copy ArrayList to array?
  8. How to get sub list from ArrayList?
  9. How to sort ArrayList using Comparator?
  10. How to reverse ArrayList content?
  11. How to shuffle elements in ArrayList?
  12. How to swap two elements in a ArrayList?
  13. How to convert list to csv string format?
Knowledge Centre
Procedural Vs Object-oriented Programs
In procedural program, programming logic follows certain procedures and the instructions are executed one after another. In OOP program, unit of program is object, which is nothing but combination of data and code.

In procedural program, data is exposed to the whole program whereas in OOPs program, it is accessible with in the object and which in turn assures the security of the code.
Famous Quotations
There is a great difference between worry and concern. A worried person sees a problem, and a concerned person solves a problem.
-- Harold Stephens

About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected] or you can comment on the page.

Most Visited Pages

Other Interesting Sites

Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
Privacy Policy | Copyright © 2017 by Nataraja Gootooru. All Rights Reserved.