HashMap in Java with examples.
Автор: JavaRangers In English
Загружено: 2024-10-14
Просмотров: 10
🎥 Welcome to the world of Java! In this video, we will take a detailed look at one of the most popular collections – HashMap. You’ll learn what a HashMap is, how it works, and its key features. 🚀
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Timestamps:
0:00 Introduction
0:18 Types of Collections
1:52 Why Map is Separate from the Others
2:51 How HashMap Works
5:05 Creating and Interacting with HashMap
6:40 Adding Elements with *put()
7:58 Retrieving Elements with *get()
8:25 Checking for Elements with *contains()
9:15 Features of *put()
9:50 Adding with Check using *putIfAbsent()
10:33 Replacing with *replace()
11:44 Removing with *remove()
12:01 keySet()
12:52 entrySet()
13:43 Summary & Conclusion
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