LinkedList - making list unmodifiable using Collections.unmodifiableList in java

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LinkedList - making list unmodifiable using Collections.unmodifiableList

import java.util.LinkedList; import java.util.Collections; import java.util.List; /** Copyright (c), AnkitMittal JavaMadeSoEasy.com */ public class LinkedListUnModifiableExample {    public static void main(String args[]) {           List<String> linkedList = new LinkedList<String>();           linkedList.add("ankit");           linkedList.add("javaMadeSoEasy");           // getting unmodifiable list           List<String> unmodifiableList = Collections.unmodifiableList(linkedList);                     /*           * Now any attempt to modify list will throw java.lang.UnsupportedOperationException           */           unmodifiableList.add("mittal");    } } /*OUTPUT Exception in thread "main" java.lang.UnsupportedOperationException    at java.util.Collections$UnmodifiableCollection.add(Unknown Source)    at LinkedListUnModifiableExample .main(LinkedListTest.java:23) */

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Labels: Collection programs Core Java LinkedList programs