Java Programming: Lesson 68 - Linked Hash Maps

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In the previous lesson (https://youtu.be/8hFCsjIuvMo), we learned about another alternative for HashSet: LinkedHashSet. It's simply a subclass of HashSet that performs very similarly. Welp, there's something called a LinkedHashMap which behaves very similarly to a HashMap. We investigate some operations for dealing with dictionaries in the context of a LinkedHashMap, which can also be treated as a review of HashMaps.

For a linked hash map (or hash map or table):
1. myDictionary.put( a , b ) assigns the value b to the key a
2. myDictionary.get( a ) returns the value associated with key a
3. myDictionary.size( ) returns the number of key-value pairs in the dictionary
...

0:56 Review of Linked Hash Sets
3:27 Review of Concurrent Linked Queues
9:14 NEW: Linked Hash Maps

Back to dictionary #1 (hashmaps, lesson 55): https://youtu.be/VHokhdTsCC8
Back to dictionary #2 (hashtables, lesson 64): https://youtu.be/IqkZmd8EvVg
To dictionary #3 (this video, linked hash maps, lesson 68): https://youtu.be/imFmQ7dsugI
Forward to dictionary #4 (concurrent hash maps, lesson 69): https://youtu.be/qq4ESf7_CQo

Now we know SEVERAL dictionaries: HashMap, Hashtable, LinkedHashMap. There can't be a 4th one... https://youtu.be/qq4ESf7_CQo

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