How do I update the element at a certain position in an ArrayList? [duplicate]

I have one ArrayList of 10 Strings. How do I update the index 5 with another String value?

Solution 1:

Let arrList be the ArrayList and newValue the new String, then just do:

arrList.set(5, newValue);

This can be found in the java api reference here.

Solution 2:

list.set(5,"newString");

Reference

Solution 3:

 arrList.set(5,newValue);

and if u want to update it then add this line also

 youradapater.NotifyDataSetChanged();

Solution 4:

 import java.util.ArrayList;
 import java.util.Iterator;


 public class javaClass {

public static void main(String args[]) {


    ArrayList<String> alstr = new ArrayList<>();
    alstr.add("irfan");
    alstr.add("yogesh");
    alstr.add("kapil");
    alstr.add("rajoria");

    for(String str : alstr) {
        System.out.println(str);
    }
    // update value here
    alstr.set(3, "Ramveer");
    System.out.println("with Iterator");
    Iterator<String>  itr = alstr.iterator();

    while (itr.hasNext()) {
        Object obj = itr.next();
        System.out.println(obj);

    }
}}