What are some examples of using LinkedHashMap in Java?

Can you give me some examples of using LinkedHashMap in Java?

Sure! A LinkedHashMap maintains the insertion order of its elements. For example, you can use it to store user sessions where the order of access matters.

How does it differ from HashMap?

The main difference is that LinkedHashMap maintains a linked list of the entries, which allows it to preserve the order of insertion, while HashMap does not.

Can you show me a code snippet?

Absolutely! Here's a simple example:

LinkedHashMap<String, Integer> map = new LinkedHashMap<>();
map.put("One", 1);
map.put("Two", 2);
map.put("Three", 3);
System.out.println(map);

This will print the entries in the order they were added.

What are the use cases for LinkedHashMap?

LinkedHashMap is great for caching, maintaining a history of access, and implementing LRU (Least Recently Used) caches.