How to replace element in ArrayList

 We can replace any specific index element by other element using set(int index,element) method.

import java.util.ArrayList;
public class ReplaceElement {

public static void main(String[] args) {
ArrayList<String> arr = new ArrayList<String>();

// add element in arraylist

arr.add(“c”);
arr.add(“php”);
arr.add(“html”);
arr.add(“java”);
arr.add(“delhi”);
arr.add(“india”);

// print arraylist

System.out.println(“before replace arrayList is = ” + arr);

/*
* Replaces the element at the specified
*  position in this list with the specified element.
*/

arr.set(2,”Mysql”);

System.out.println(“after replace arrayList is = ” + arr);

}

}

Output:

before replace arrayList is = [c, php, html, java, delhi, india]

after replace arrayList is = [c, php, Mysql, java, delhi, india]

 

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