Java ArrayList and HashMap explained.
Java ArrayList and HashMap are two classes that you can use to store objects in a collection.
In this video I explain a couple of the classes from the Java collections framework. ArrayList is a wrapper class for an Array and gives us a dynamically sized, sortable array. HashMaps allow us to store objects with keys.
Both of these classes are very useful and widely used.
This video also covers sorting lists, the comparable interface and the Collections.sort method.
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