Java.lang.UnsupportedOperationException

A java.lang.UnsupportedOperationException exception occurred when calling Add,remove these method after using Arrays.aslist (). This is because Arrays.aslist () returns java.util.arrays$arraylist instead of ArrayList. Arrays$arraylist and ArrayList are inherited Abstractlist,remove,add etc. method in Abstractlist is the default throw Unsupportedoperationexception and does not do anything. ArrayList override these method to manipulate the list, but Arrays$arraylist does not override remove (), add (), etc., so the throw Unsupportedoperationexception.

Java.lang.UnsupportedOperationException