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Hashmap in java :
A Java HashMap is a widely used data structure that stores key-value pairs and provides constant-time performance for basic operations like adding, removing, and retrieving elements.
To understand how to use HashMaps in Java, it can be helpful to watch a video demonstration. Here's a YouTube video that explains the concept of HashMap in Java in a clear and concise way:
• hashmap in java | hashmap with program | j...
In the video, the instructor starts by introducing the concept of HashMaps in Java and explains how they work. They then provide an example code snippet to demonstrate how to create and manipulate a HashMap in Java.
The instructor also covers important concepts related to HashMaps, such as the use of key-value pairs, the benefits of using HashMaps over other data structures, and how to iterate over the elements of a HashMap.
Overall, this video provides a great introduction to the concept of HashMaps in Java, and is a great resource for anyone looking to learn more about this important data structure.
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