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103 results

Prod Ready Code
Why HashMap Returns null: equals() & hashCode() Contract Explained

You put a value in a HashMap. You know it's there. But when you try to get it back… it's null. This isn't a Java bug. It's an equals() ...

2:57
Why HashMap Returns null: equals() & hashCode() Contract Explained

0 views

5 days ago

Guisune
HashMap and HashSet

On a vacation right now so can't do a leetcode. I mean I probably can but decided to do hash table instead. Hopefully it's ...

20:12
HashMap and HashSet

17 views

5 days ago

Code Silica
Two Sum | LeetCode Interview Question | HashMap Explained in Java

Day 1/150 – Two Sum | LeetCode Interview Question In this video, we solve the Two Sum problem — one of the most frequently ...

6:32
Two Sum | LeetCode Interview Question | HashMap Explained in Java

4 views

5 days ago

Code Silica
Group Anagrams | LeetCode Interview Question | HashMap Explained in Java

Day 5/150 – LeetCode 150 Interview Questions Series (Java) In this video, we solve the “Group Anagrams” problem — a very ...

2:57
Group Anagrams | LeetCode Interview Question | HashMap Explained in Java

0 views

3 days ago

Web Fusion with Bharadwaj
14. HashMap in Java

Welcome to Code-with-Bharadwaj! Hi there! I'm Manu, and I'm excited to help you level up your coding skills.

19:10
14. HashMap in Java

34 views

4 days ago

Code for Tech Solutions
Why String Is Immutable in Java? 🔥 Most Asked Java Interview Question

Why does Java make String immutable? This is one of the MOST ASKED and MOST MISUNDERSTOOD Java interview questions ...

9:41
Why String Is Immutable in Java? 🔥 Most Asked Java Interview Question

32 views

4 days ago

Hacktrickz
Lecture 25.6 : HashMap vs TreeMap in Java | Map Interface Explained [Abdul Bari] Java Course

This lecture explains the Map interface in Java with a detailed comparison between HashMap and TreeMap. You will learn how ...

10:13
Lecture 25.6 : HashMap vs TreeMap in Java | Map Interface Explained [Abdul Bari] Java Course

0 views

6 days ago

Rohan Shinde
HashMap vs Hashtable audio overview

In this audio overview, we break down two of Java's most foundational data structures. We explore why the legacy Hashtable is ...

0:31
HashMap vs Hashtable audio overview

0 views

6 days ago

Code Silica
Contains Duplicate II | LeetCode Interview Question | HashMap Explained in Java

Day 3/150 – LeetCode 150 Interview Questions Series (Java) In this video, we solve the “Contains Duplicate II” problem — a ...

4:16
Contains Duplicate II | LeetCode Interview Question | HashMap Explained in Java

2 views

3 days ago

Web Fusion with Bharadwaj
16. Linked HashMap in Java

Welcome to Code-with-Bharadwaj! Hi there! I'm Manu, and I'm excited to help you level up your coding skills.

10:59
16. Linked HashMap in Java

14 views

3 days ago

Padho with Pratyush
4 Questions to Master HASHMAPS in C++ JAVA Python | DSA Patterns Course 2026

Why Should You Learn DSA Patterns in 2025? https://www.youtube.com/watch?v=qH2VQY48mg4 DSA Patterns Playlist: ...

1:06:02
4 Questions to Master HASHMAPS in C++ JAVA Python | DSA Patterns Course 2026

2,178 views

4 days ago

Hacktrickz
Lecture 25.4 : Hashing Technique & HashSet in Java Explained [Abdul Bari] Java Course

This lecture introduces the hashing technique and explains how HashSet works internally in Java. You will understand hashing, ...

16:12
Lecture 25.4 : Hashing Technique & HashSet in Java Explained [Abdul Bari] Java Course

0 views

6 days ago

Full Stack Java Developer
HashMap: Fast, non-synchronized, allows one null key. Hashtable: Thread-safe, synchronized, no null.

HashMap: Fast, non-synchronized, allows one null key. Hashtable: Thread-safe, synchronized, no null. #javashorts #hashmap ...

0:43
HashMap: Fast, non-synchronized, allows one null key. Hashtable: Thread-safe, synchronized, no null.

633 views

3 days ago

Hacktrickz
Lecture 25.7 : LinkedHashMap, Hashtable & Cache in Java [Abdul Bari] Java Course

In this lecture, we discuss LinkedHashMap, Hashtable, and how LinkedHashMap can be used as a cache. This video also ...

29:37
Lecture 25.7 : LinkedHashMap, Hashtable & Cache in Java [Abdul Bari] Java Course

2 views

6 days ago

BeingSoftwareEngineer
Java ConcurrentHashMap: putIfAbsent(), compute(), computeIfAbsent(), merge() Explained

In this video, we deep dive into ConcurrentHashMap atomic methods in Java and explain why thread safety alone is not enough.

9:15
Java ConcurrentHashMap: putIfAbsent(), compute(), computeIfAbsent(), merge() Explained

38 views

2 days ago

vlogize
Verstehen, wie man eine HashMap innerhalb einer Methode in Java initialisiert

Erfahren Sie, wie Sie eine `HashMap` in Java korrekt initialisieren und sicherstellen, dass die Daten in Ihren Methoden wie ...

1:45
Verstehen, wie man eine HashMap innerhalb einer Methode in Java initialisiert

0 views

5 days ago

The Curious Coder
Java List vs Set vs Map | Difference Between List, Set & Map in Java

In this video, we compare List vs Set vs Map in Java and explain how they differ within the Java Collection Framework. You'll get a ...

18:05
Java List vs Set vs Map | Difference Between List, Set & Map in Java

354 views

4 days ago

AajKarleCode (AKC)
Java HashMap Complete Guide: All Essential Functions Explained

Master Java HashMap with this comprehensive tutorial! Learn all essential HashMap functions with practical examples. Perfect for ...

1:16
Java HashMap Complete Guide: All Essential Functions Explained

152 views

6 days ago

JavaCodeAcademy
Why HashMap allows only one nul key?Java interview.#Java #JavaInterview #HashMap #JavaShorts #Shorts
0:24
Why HashMap allows only one nul key?Java interview.#Java #JavaInterview #HashMap #JavaShorts #Shorts

1,006 views

7 days ago

The Curious Coder
List vs Set vs Map: What’s the Difference? #shorts

Confused about List vs Set vs Map? In this short video, we explain the difference between List, Set, and Map data structures, ...

1:13
List vs Set vs Map: What’s the Difference? #shorts

1,033 views

2 days ago