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

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

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.

list.set(5,"newString");  

• Reference

 arrList.set(5,newValue);

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

 youradapater.NotifyDataSetChanged();

 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);
		
	}
}}

arrayList.set(location,newValue); location= where u wnna insert, newValue= new element you are inserting.

notify is optional, depends on conditions.