Java ArrayList replace at specific index

Question

I need help with this java please  I created an ArrayList of bulbs  and I m trying to replace a bulb at specific index with another bulb  So with the following heading  how do I proceed   public void replaceBulb int index  Bulbs theBulb

User · Answer

You can replace the items at specific position using set method of ArrayList as below:

list.set( your_index, your_item );

But the element should be present at the index you are passing inside set() method else it will throw exception.

User · Answer

public void setItem List lt Item gt  dataEntity  Item item        int itemIndex   dataEntity indexOf item       if  itemIndex    -1            dataEntity set itemIndex  item

User · Answer

We can replace element in arraylist using ArrayList Set   method We are a example for this as below  Create Arraylist  ArrayList lt String gt  arr   new ArrayList lt String gt      arr add  quot c quot     arr add  quot php quot     arr add  quot html quot     arr add  quot java quot     Now replcae Element on index 2  arr set 2  quot Mysql quot     System out println  quot after replace arrayList is    quot    arr    OutPut    after replace arrayList is    c  php  Mysql  java   Reference   Replace element in ArrayList

User · Answer

Lets get array list as ArrayList and new value as value all you need to do is pass the parameters to  set method  ArrayList set index value  Ex - ArrayList set 10  quot new value or object quot

User · Answer

Use ArrayList set

User · Answer

Check out the set int index  E element  method in the List interface

User · Answer

Use the set   method  see doc  arraylist set index newvalue

[java] Java ArrayList replace at specific index

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