modify « collection « Java Collection Q&A

1. How to modify, without any loop, a collections values to get a new collection?    stackoverflow.com

How do I, without using any loop, modify the values in a collection to get a new collection with the modified values? For example, I'm having a Collection<String> and want to surround ...

2. Collections.unmodifiablemap() and collections where reads also modify    stackoverflow.com

This is more a curiosity question than anything. Say I supply a LinkedHashMap with access ordering set to true to Collections.unmodifiableMap(). Since reads are actually modifying the map. Does it mean ...

3. Modifying a Collection while iterating using for-each loop    stackoverflow.com

If I modify a Collection while iterating over it using for-each loop, it gives ConcurrentModificationException. Is there any workaround?

4. Concepts of modifying the element in collection while iterating?    stackoverflow.com

I found this statement if a thread modifies a collection directly while it is iterating over the collection with a fail-fast iterator, the iterator will throw this exception. at

5. UnsuppourtedOperationException when tried to modify the Collections.unmodifiable format .    coderanch.com

6. iterating thro collection and modifying    forums.oracle.com

Hi, Let me explain in brief what i'm trying to do. i'm having a collection which has duplicate records in it. Based on one of the field say id in each record i need to create a new collection which would have records with distinct id. so i'm iterarating thro first collection, and creating a temporary List for new set of ...