Question

I have HashMap HashMap<Integer, List<String>> storeR and it stores "22,name1,name2"..but is there any way to remove name1 from the 22? i just want to remove only name 1 from 22. How do i do that.?I hope you can help me with it. Thank you.

Answer 1

Get the list out of your map and remove the element you want to have removed:

storeR.get(22).remove("name1");

If there is no key 22 in the map, or it’s value is null this will throw a NullPointerException, though.