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InterviewBit
interviewbit.com › java-cheat-sheet
Java Cheat Sheet: Freshers and Experienced (2024) - InterviewBit
January 7, 2024 - List<String> list = new ... error. This verifies that the code is checked at compile-time. You can download a PDF version of Java Cheat Sheet....
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GitHub
github.com › fletchy95 › Java-Cheat-Sheet
GitHub - fletchy95/Java-Cheat-Sheet: A interview cheat sheet I built in preperation of an interview. Feel free to fork it, make suggestions for adding items to this list. I built this cheat sheet to fit the position I was interviewing for this may be a perfect fit for you or it may be missing things! Use at your own risk! :) · GitHub
I built this cheat sheet for an entry level Java interview. I built it to the standards of my job description. Therefore it its important to review your job descripiton for the role your applying for and then use mine, or alter it depending on your needs. Feel free to fork it to make adjustments to fit your needs. Perhaps I'll make more Cheat Sheets in the future for other languages if I find the time! There is a .md verison of the cheat sheet, as well as a PDF and .docx verison!
Starred by 24 users
Forked by 14 users
Discussions

My Java Mega-Cheatsheet
🌐 r/cscareerquestions
11
96
December 3, 2019
Algorithms and Data Structures cheat sheets?

Here are some of the useful links:

Big-O Cheat Sheet Tech Interview Cheat Sheet Data Structures Cheat Sheet Data Structures Cheat Sheet Algorithmic Cheat Sheet Guide to selecting appropriate Map/Collection in Java Data Structures Checkout notes Data Structures and Algorithms with Object-Oriented Design Patterns in Java Data Structures Tutorial Notes Algorithms & Data Structures - Notes by cooervo Algorithm Wiki Visual Algo UB Data Structures in C++ Lecture Slides & Notes Skiena's DS & Algo Audio/Video/Slides Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne Nick Johnsonz's Blog : Damn Cool Algorithms Algorist Justin Wetherell: Data Structures & Algorithms implementation in Java Ashish Chopra: Data Structures implementation in Java Prakhar Srivastav: Data Structures implementation in Python Battistella Stefano : Data Structures implementation in Javascript Daniel Fu : Data Structures implementation in C++ More on reddit.com
🌐 r/learnprogramming
57
657
August 12, 2015
Awesome cheat sheet for must know data structures and algorithms
>open link >see it's already bookmarked >feelsbadman Here's a site with a more accessible approach to explaining Big-O More on reddit.com
🌐 r/learnprogramming
57
1988
January 31, 2018
The Technical Interview Cheat Sheet
Sometimes I wonder why people still ask these things in interviews. In most real-world programming you can throw out half of those data structures and you'll never have to implement your own sort anyway. More on reddit.com
🌐 r/programming
528
2933
August 24, 2015
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Medium
medium.com › @azizmarzouki › last-minute-java-interview-cheat-sheet-key-concepts-to-ace-your-interview-39aa172bc711
Last Minute Java Interview Cheat Sheet: Key Concepts to Ace Your Interview | by Aziz Marzouki | Medium
October 22, 2024 - Last Minute Java Interview Cheat Sheet: Key Concepts to Ace Your Interview Object-Oriented Programming Concepts Encapsulation: Focuses on hiding implementation details and only exposing necessary …
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GeeksforGeeks
geeksforgeeks.org › java › java-cheat-sheet
Java Cheat Sheet (2025): Freshers and Experienced - GeeksforGeeks
October 9, 2025 - This Java Cheat Sheet article has been written by experts in Java and is based on the experience of students who have recently undergone Java interviews.
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GitHub
github.com › jwasham › coding-interview-university › blob › main › extras › cheat sheets › Java Fundamentals Cheatsheet.pdf
coding-interview-university/extras/cheat sheets/Java Fundamentals Cheatsheet.pdf at main · jwasham/coding-interview-university
A complete computer science study plan to become a software engineer. - coding-interview-university/extras/cheat sheets/Java Fundamentals Cheatsheet.pdf at main · jwasham/coding-interview-university
Author   jwasham
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Scribd
scribd.com › document › 897795862 › Java-Technical-Interview-Cheat-Sheet
Java Technical Interview Cheat Sheet | PDF
JavaScript is disabled in your browser · Please enable JavaScript to proceed · A required part of this site couldn’t load. This may be due to a browser extension, network issues, or browser settings. Please check your connection, disable any ad blockers, or try using a different browser
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Itcollege
enos.itcollege.ee › ~jpoial › allalaadimised › reading › Java-Interview-Questions.pdf pdf
Java-Interview-Questions.pdf
In this guide we will discuss about different types of questions that can be used in a Java interview, in order for the employer to
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AlgoDaily
algodaily.com › lessons › java-interview-questions-cheat-sheet
AlgoDaily - Daily coding interview questions. Full programming interview prep course and software career coaching.
Programming interview prep bootcamp with coding challenges and practice. Daily coding interview questions. Software interview prep made easy.
Find elsewhere
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Reddit
reddit.com › r/cscareerquestions › my java mega-cheatsheet
r/cscareerquestions on Reddit: My Java Mega-Cheatsheet
December 3, 2019 -

https://yungnickyoung.github.io/Java-Cheatsheet/

Made this over the summer when I was job hunting. Even now it's incredibly useful and easy to reference whenever I forget something I shouldn't. I figured I'd post it here for you all in case anyone wanted to use it.

Feel free to request new information/sections (or make a PR yourself ;)) if there's something missing from it that you'd like to see.

Hopefully it can help some of you out!

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Cheatography
cheatography.com › nafanya › cheat-sheets › java-coding-interview-cheat-sheet
Java Coding Interview Cheat Sheet Cheat Sheet by nafanya - Download free from Cheatography - Cheatography.com: Cheat Sheets For Every Occasion
Main Java types, collections, and methods that are used in programming during white board coding interview ... https://cheatography.com/nafanya/cheat-sheets/java-coding-interview-cheat-sheet/ //media.cheatography.com/storage/thumb/nafanya_java-coding-interview-cheat-sheet.750.jpg
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Hackr
hackr.io › home › articles › programming
Java Cheat Sheet: Download PDF for Quick Reference
October 2, 2025 - Thus, byte code is platform-independent and can run on multiple systems. The only requirement is Java needs a runtime environment, i.e., JRE, which is a set of tools used for developing Java applications.
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Cheatography
cheatography.com › sdm7306 › cheat-sheets › java-interview-questions › pdf pdf
Java Interview Questions Cheat Sheet by sdm7306
We announce all new cheat sheet releases on our Twitter account. Follow us to make sure you don't miss out
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Alma Better
almabetter.com › bytes › cheat-sheet › java
Java Cheat Sheet (Basics to Advanced Java Cheat Sheet)
October 23, 2024 - This comprehensive Java cheat sheet for interview preparation and general coding provides a complete guide to the fundamental concepts of Java. From basic syntax, OOP principles, core Java topics, data structures, and algorithms, mastering these ...
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Medium
medium.com › @s.sreejith › core-java-interview-cheat-sheet-dce4f2590f4f
Core Java Interview Cheat Sheet. Core Java | by Sreejith | Medium
October 4, 2020 - Core Java Interview Cheat Sheet A curated list of commonly asked core Java concepts BASICS Java language and platform Java language : High level, Platform Independent, Portable Java platform : JRE …
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Cs2113f18
cs2113f18.github.io › java › JavaCheatSheet.pdf pdf
THE JAVA LANGUAGE CHEAT SHEET Primitive Types:
THE JAVA LANGUAGE CHEAT SHEET · Primitive Types: INTEGER: byte(8bit),short(16bit),int(32bit), long(64bit),DECIM:float(32bit),double(64bit) ,OTHER: boolean(1bit), char (Unicode) HEX:0x1AF,BINARY:0b00101,LONG:8888888888888L · CHAR EXAMPLES: ‘a’,’\n’,’\t’,’\’’,’\\’,’\”’ ·
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Tech With KP
techwithkp.com › home › dsa cheat sheet (java) — quick revision for 50+ interview questions + pdf download
DSA Cheat Sheet (Java) — Quick Revision for 50+ Interview Questions + PDF Download
December 20, 2025 - Download the Java DSA Cheat Sheet PDF — 50+ interview questions, patterns, code snippets, Big-O tables and a complete 7-day revision plan.
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Cheatography
cheatography.com › tag › interviews
32 Interviews Cheat Sheets - Cheatography.com: Cheat Sheets For Every Occasion
2023 Interview Cheat Sheet: A concise, value-packed reference for software engineers, providing expert guidance on answering common interview questions. This cheat sheet helps you present yourself confidently, align your skills with the job, and excel in interviews by offering succinct responses ...
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LeetCode
leetcode.com › discuss › study-guide › 5383714 › Java-Cheat-Sheet
Java Cheat Sheet - Discuss - LeetCode
June 28, 2024 - Here's a Java cheat sheet covering key concepts, data types, operators, data structures, and other useful information. This guide should help you with Java basics, especially if you’re preparing for coding interviews.