Java NIO SocketChannel: a channel that is connected to a TCP network socket. You can set a SocketChannel into non-blocking mode. When you do so, you can call connect(), read() and …

Sep 20, 2024 · This Java Cheat Sheet serves as a quick reference guide for both beginners and experienced developers working with Java. By summarizing essential syntax, key concepts, …

Dec 11, 2024 · Data Structures Basics 1. Arrays 2. Character 3. String and StringBuilder 4. List and...

Jun 15, 2023 · Over the past eight months, I have dedicated myself to practicing on LeetCode, honing my problem-solving skills. However, I have often found myself grappling with a …

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Jan 29, 2023 · When using contains, choosing HashSet over ArrayList as the time complexity for HashSet is O (1) whereas for ArrayList is O (n).

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Nov 23, 2020 · Prepare for your Java interviews with these detailed Stream API questions and answers. Learn how to use map, filter, reduce, collect, and…

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Templates and formulas on common coding interview patterns and problem topics. Time complexity & Sample Codes.