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 >>
blog comments powered by Disqus

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
Preemptive scheduling Vs Time slicing?
Preemptive scheduling: The highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence.

Time slicing: A task executes for a predefined slice of time and then reenters the pool of ready tasks. The scheduler then determines which task should execute next, based on priority and other factors.
Famous Quotations
If you don’t make mistakes, you’re not working on hard enough problems. And that’s a big mistake.
-- Frank Wilczek

About Author

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.