Interview QnA

Synchronized HashMap vs. Concurrent HashMap in Java

Two common choices for handling concurrent operations on key-value pairs are Synchronized HashMap and Concurrent HashMap. In this blog post, we will explore these data structures in-depth, provide examples, and compare their performance and memory characteristics, helping you decide when to use each one effectively. Synchronized HashMap A Synchronized HashMap is a standard java.util.HashMap wrapped …

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Hashtable vs. HashMap in Java

Two commonly used data structures for key-value pair storage are Hashtable and HashMap. In this blog, we’ll delve deep into Hashtable and HashMap, providing in-depth explanations, examples, and insights into their performance and memory differences. By the end of this blog, you’ll have a clear understanding of when to use each of these data structures. …

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Javascript Interview Questions – Set 1

1. What is JavaScript and how does it differ from Java? Answer: JavaScript is a high-level, dynamically typed, and interpreted programming language primarily used for building interactive web pages. Despite the similar name, JavaScript and Java are entirely different languages. The key differences include: 2. Explain the difference between null and undefined in JavaScript. Answer: …

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