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

Question

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

User · Accepted Answer

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

User · Answer

import java util ArrayList   import java util Iterator     public class javaClass    public static void main String args            ArrayList lt String gt  alstr   new ArrayList lt  gt         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 lt String gt   itr   alstr iterator         while  itr hasNext              Object obj   itr next            System out println obj

User · Answer

list set 5  newString         Reference

User · Answer

arrayList set location newValue   location  where u wnna insert  newValue  new element you are inserting   notify is optional  depends on conditions

User · Answer

arrList set 5 newValue     and if u want to update it then add this line also   youradapater NotifyDataSetChanged

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

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