Java HashMap Tutorial for Beginners

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HashMap in Java - Java HashMap Tutorial for beginners. Learn HashMap in 5 minutes. • What is HashMap? • Hash table based implementation of the Map interface. This implementation provides all of the optional map operations, and permits null values and the null key. (The HashMap class is roughly equivalent to Hashtable, except that it is unsynchronized and permits nulls.) This class makes no guarantees as to the order of the map; in particular, it does not guarantee that the order will remain constant over time. • Source: https://docs.oracle.com/javase/8/docs... • Timestamps • 0:00 - Intro • 0:15 - Import and object creation • 1:10 - Storing data • 2:15 - Accessing values • 2:58 - HashMap size • 3:07 - Removing key-value • 3:27 - Running the code • 4:03 - Iterating the HashMap • 5:48 - Important theory points • Website: https://javacodingcommunity.com • Instagram:   / javacodingcommunity   • Github: https://github.com/javacodingcommunit...

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