HashMap source code analysis (JDK1.8)
In this article, we'll take a look at a collection class that is commonly used in everyday development - HashMap. HashMap first appeared in JDK...
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Tag: hashmap
Java container | Map collection system based on source analysis
December 14, 2023
by Ryan Chaudhary
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In the source code of collection system, the design of HashMap in Map is the most classic, involving data structure, programming idea, hash calculation and...
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Common wrapper class, List, Set, HashMap insights
December 14, 2023
by Hayley Owen
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Integer and String1.1 Integer wrappers The Integer wrapper is a wrapper around basic data types, with common methods such as type swapping. An int wrapper...
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Why does the length of a HashMap have to be 2 to the n
December 14, 2023
by Lesley Hargreaves
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First let's look at the source code in the HashMap where it is established that the length is 2 to the power of n, and...
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How does HashMap work? Detailed text and text, let’s have a look!
December 14, 2023
by Mark Greenwood
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How does HashMap work in Java? It's based on Hash. 2 What is a hash? Hash, in its simplest form, is a way of assigning...
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Fundamentals of HashMap (with source analysis)
December 14, 2023
by Stanley Watson
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HashMap is a very common container in Java. It was only used in the use stage before, and it was only half-understood the underlying design....
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Part of the review points about Java collections
December 14, 2023
by Jeanette Holden
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ArrayList essentially inherits from AbstractList, which in turn inherits from the Collection class, and ArrayList is the interface that implements List
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HashMap basics
December 14, 2023
by Natalie Hale
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Today, I'm going to talk about one of the most cliched and often talked about issues. Search HashMap on the Internet and find various articles....
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[Knowledge summary] HashMap
December 14, 2023
by Megan Hernandez
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HashMap is used to store key-value pairs and was based on arrays + linked lists before JDK1.8, which added a red-black tree structure to improve...
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Huawei Interviewer: Why is the load factor of HashMap 0.75?
December 14, 2023
by Ethan Mitchell
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There are a lot of things that I didn't pay much attention to when I was learning. When I reviewed HashMap, I also found that...
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Question of the Day Series – LeetCode -525- Contiguous Arrays
December 14, 2023
by Grace Allen
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Leetcode-525 - sequential array <; ! --more--> [Title Description] {Code... } [title link] leetcode topic link address [making] code/ideas introduced ideas one: violence method (this...
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The clever design in Java Map
December 14, 2023
by Sarah Glenn
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I recently read some Java Map source code and was amazed at how well the JDK developers worked. These ingenious design ideas are very valuable...
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If you still don’t understand the HashMap after reading it, I’ll just drink it upside down
December 14, 2023
by Caitlin Taylor DDS
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HashMap is an asynchronous implementation of the Map interface based on a hash table. This implementation provides all optional mapping operations and allows the use...
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Three years of work and you haven’t even read the source code of HashMap? Real food!
December 14, 2023
by 王佩君
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In JDK 1.7, HashMap was composed of an array and a linked list. Since JDK 1.8, a red-black tree structure has been added. When the...
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Map is implemented based on zip and linear probe hash tables
December 14, 2023
by Amber Salazar
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In previous posts, we learned how to implement maps based on arrays, linked lists, binary trees, and red-black trees. In this post, we will learn...
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Interview Java — HashMap and ConcurrentHashMap of collections
December 14, 2023
by Meghan Gonzales
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Friendly reminder, the length of this article involves more knowledge points, the consumption of mental power is relatively large. If you don't need to review...
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Deep parsing of the underlying implementation architecture of HashMap
December 14, 2023
by Lindsay Smith
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You've all heard of the Map interface, right? It is a common way to store key-value pairs in Java, and I believe you should also...
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HashMap in 3 seconds
December 14, 2023
by Donna Holmes
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JDK1.8 summary positioning elements {code... } Load factor {code... } Capacity expansion {code... } tree condition {code... } 0.75 16 8 64 {code... Consider, for...
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Abnormal HashMap. Values (). AddAll ()
December 14, 2023
by Gina Mann
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Question: in the use of a Collection. The addAll report UnsupportedOperationException () method. The traceability reveals that the collection came from HashMap.values ().
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Java Collections – What is a Map
December 14, 2023
by Casey Bowater-Parkes
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A Map is used to store data that has a mapping relationship. A set of maps holds two sets of values: one set holds the...
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The interviewer asked me what makes HashMap unsafe, and I stammered…
December 14, 2023
by Suzanne Patel
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There are some differences between HashMap in JDK7 and JDK8: JDK7HashMap is based on array + linked list, while JDK8 is based on array +...
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Ali asked me to write a HashMap and I gave it to him in two minutes!!
December 14, 2023
by Susan Baxter
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I can see the interview question of Dacheng today. To be honest, I really understand HashMap, and I have read the source code for many...
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【 Java Basics 】List, Map sort summary
December 14, 2023
by 金雅芳
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Sorting Lists (mainly ArrayList) and Maps (mainly HashMap) is the most common business scenario, so it's worth systematically reviewing and learning about them. This article...
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