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Author: Victoria Here is a checklist of Java static code analysis tools, that we use at RomexSoft in most of our projects. Items in the list may be duplicated in more than one category because those are applicable in both. Do not log any sensitive information, neither put it into the query parameters. Code reviews are essential to code quality, but usually, no one in the team wants to review tens of thousands of lines of code. Proper error handling for negative scenarios, input should be validated before any processing. I decided to publish parts of the checklist … These are the things which I have been accumulated over the years but I also look forward to you guys to contribute your experience, best practices for code review and suggest how you guys do code review. As outlined in Tips for an Effective SAP Commerce Cloud Code Review, it's important to be able to deliver code reviews consistently across your team.This page provides a checklist of items to verify when doing code reviews. We know NullPointerExceptionis the most common exception in Java and can cause big problems. The list contains best code review tools including open-source as well as commercial. Core Java - OOP Concepts, Garbage Collection, Multi-threading, Collections Framework, Java 8 Features, Lambda Functions, Streams. Checklist: Description/example: Use of descriptive and meaningful variable, method and class names as opposed to relying too much on comments. 24 views. Code consistency with the existing culture of writing the code. Developer It’salways fine to leave comments that help a developer learn something new. by In practice, a review of 200-400 LOC over 60 to 90 minutes should yield 70-90% defect discovery. 14. code-review-checklists has one repository available. Name of the variables, methods and classes should be intention revealing in nature. Use Intention-Revealing Names. All the item enlisted may or may not necessary for all java project. At the Apache Druid community, we are currently preparing a detailed checklist to be used during code reviews. Code becomes less readable as more of your working memory is r… code-review-checklists has one repository available. The brain can only effectively process so much information at a time; beyond 400 LOC, the ability to find defects diminishes. Immutability/Snapshotting; Divide and conquer; Producer-consumer; Instance confinement; Thread/Task/Serial thread confinement; Active object; Code smells, identifying that a class or a subsystem could potentially be redesigned for better: Functions. Meaningful Names. Consistent method signatures (return optional instead of null for Java code) Personal Code Review. Are the Java class libraries used where and when appropriate? Checklist Item. Java Inspection Checklist. Classes and methods should be small in terms of number of lines. Let’s review each of them. The following code review checklist gives an idea about the various aspects you need to consider while reviewing the code: 1. A review of a non-trivial patch involving concurrency should take at least one hour (for some patches much, much more). Do not reinvent the wheels. At the 22nd International Conference on Software Engineering, Alastair Dunsmore, Marc Roper, and Murray Wood presented the findings of their study on three different techniques for code review.. Java Inspection. This approach has delivered many quality issues into the hands of our clients, which has helped them assess their risk and apply appropriate mitigation. There is no one size fits all for code review checklists. Can we use non-blocking mechanism for inter service communication? Even though there are a lot of code review techniques available everywhere along with how to write good code and how to handle bias while reviewing, etc., they always miss the vital points while looking for the extras. Code review is really the only way to find obscure or confusing code, because other people are reading it and trying to understand it. Code Review Checklist - Java 1. Code Review Checklist Static Code Analysis Checklist Item Category Notes Check static code analyzer report for the classes added/modified Static Code Analysis There must be automated Code Analysis for the project you are working on, do not forget to check the report for the modified/added classes. Apart from functional requirements, here is the code review checklist while reviewing any Java code: Code should be clean and follow design patterns wherever applicable, is there a potential for useful abstractions, Thread-safety and concurrency related guidelines. Bad: List list; Good: List users; Class and functions should be small and focus on doing one thing. Photo by J. Kelly Brito on Unsplash. Carvia Tech | Code review can have an important function of teaching developers something newabout a language, a framework, or general software design principles. Code consistency with the existing culture of writing the code, Consistent method signatures (return optional instead of null for Java code). Code Decisions code at right level of abstraction methods have appropriate number, types of parameters no unnecessary features redundancy minimized mutability minimized static preferred over nonstatic ... Code Review Checklist . Are the Java class libraries used where and when appropriate? Storage Usage Defects (SU) Are arrays large enough? 30+ Java Code Review Checklist Items This Java code review checklist is not only useful during code reviews, but also to answer an important Java job interview question, Q. Whether synchronous inter service communication can be avoided? A personal code review simply involves reading through the code and using the review checklist to look for errors. Meaningful Names. When reading through the code, it should be relatively easy for you to discern the role of specific functions, methods, or classes. To help wind up the development process on Java programs, you can download the Java code review checklist developed by Compulink Systems Pvt. October 16, 2020 | These tips are independent of language and equally apply to Java, .NET or C++ code. Side effect on existing code, does this change break backward compatibility? It covers security, performance, and clean code practices. Join the DZone community and get the full member experience. Code Review Checklist Raw. Over a million developers have joined DZone. Based on XKCD #1513, Code Quality, adapted and reproduced under CC BY-NC 2.5.. Release resources after use (File Handles, db connections, etc), Avoid dynamic SQL, use prepared statements. What do you understand by Java Memory Model? can we write a java method that swaps two integers. Standard Code formatting across project. The team should communicate with each other and agree on a code review checklist. Following is a curated list of top code analysis tools and code review tools for java with popular features and latest download links. Java Code Review Checklist by Mahesh Chopker is a example of a very detailed language-specific code review checklist. Creating a code review checklist means you, and your whole team will have a codified reference point for your code quality, which will help streamline your code review process and ensure that the process is as refined as possible. So, as a general practice, always do a null check on a variable before any operation. The main idea of this article is to give straightforward and crystal clear review points for code revi… Personal code reviews are a highly effective practice that plays an important part in the Software Engineering Institute's Personal Software Process. There are plethora of Code Review Tools in the market and selecting one for your project could be a challenge. Security Code Review- Identifying Web Vulnerabilities 1.1.1 Abstract This paper gives an introduction of security code review inspections, and provides details about web application security vulnerabilities identification in the source code. Sharingknowledge is part of improving the code health of a system over time. Follow their code on GitHub. Just keepin mind that if your comment is purely educational, but not critical to meetingthe standards described in this document, prefix it with “Nit: “ or otherwiseindicate that it’s not mandatory for the author to resolv… Java Code Review Checklist 1. Utilize this checklist to review the quality of your Java code, including security, performance, and static code analysis. This paper gives the details of the inspections to perform on the Java/J2EE source code. Every team for every project should have such a checklist, agreed upon by all reviewers and maintained along the way. Design. Use non-blocking libraries and framework (webflux, kotlin coroutines), where needed. Java Inspection Checklist, Page 3 13. code_review_checklist.txt - General [ ] The code works [ ] The code is easy to understand ... Methods return early without compromising code readability - Java only [ ] Appropriate JCIP annotations are used [ ] No use of Object class, use generics instead In this case, understanding code means being able to easily see the code’s inputs and outputs, what each line of code is doing, and how it fits into the bigger picture. Pick one word per concept. How to handle service invocation failures. So reviews are slowed down by 15% in exchange of better quality of the code (including readability and maintainability, that will pay off later in terms of time). When a experienced person is reviewing the code then there are a number of check points which should be … Using Pub/Sub or event driven approach instead of synchronous communication wherever possible. Ltd. | Java Code Review Checklist juglviv Clean Code. ... java checklist concurrency code-review thread-safety race-conditions java-concurrency 77 … Concurrency is rationalized? Code review checklist for Java developers, Submit Form with Java 11 HttpClient - Kotlin, Difference between HashMap, LinkedHashMap and TreeMap. of the repetitive code? calculateGst(BigDecimal amount), BalanceLoader.java, etc. Follow their code on GitHub. The Code Review Checklist For each of the above categories, the following sections enlist the important review checklist items. Category. Versioing of endpoint! Use Solution/Problem Domain Names. What is Double Checked Locking Problem in Multi-Threading? Did I grasp the concepts in a reasonable amount of time by looking at the code? Variable, Attribute, and Constant Declaration Defects (VC) ... Is there repetitive code that could be replaced by a call to a method that provides the behavior of the repetitive code? Use Guava or Apache commons libraries wherever possible. Java Code Review Checklist. Can use patterns to simplify concurrency? Existing libraries and methods should be reused wherever possible. Code Review Checklist: Java Concurrency. Use checked exceptions for recoverable conditions and runtime exceptions for programming errors. Code formatting. Synchronize access to shared mutable data. [ ] Is there any excess functionality in the code but not described in the specification? Readability in software means that the code is easy to understand. No duplication of code. The Internet provides a wealth of material on code reviews: on the effect of code … The security code review checklist in combination with the secure code review process described above, culminates in how we at Software Secured approach the subject of secure code review. Meaningful naming convention, code should explain itself. While going through the code, check the code formatting to improve readability and ensure that there are no blockers: a) Use … This checklist can contain a set of rules including checking business … Specification / Design [ ] Is the functionality described in the specification fully implemented by the code? 2. Code Review Checklist and Best practices in Java What to review while doing Code review Code Review and Unit testing are some of the best development practices I always recommend, strive for, and enforce as much as possible. Using judicious comments, avoiding magic numbers, keeping one purpose for each variable, using good names, and using whitespace well can all improve the understandability of code. Are object and array references set to null once the object or array is no longer needed? Marketing Blog. Proper unit tests that covers the functional requirements. E.g. Don't Repeat Yourself (Avoid Duplication), Make sure the code formatting is applied, Use Exceptions rather than Return codes, Make class final if not being used for inheritance, Restrict privileges: Application to run with the least privilege mode required for functioning, Minimize the accessibility of classes and members, Input into a system should be checked for valid data size and range, Avoid excessive logs for unusual behavior, Release resources (Streams, Connections, etc) in all cases, Purge sensitive information from exceptions (exposing file path, internals of the system, configuration), Do not log highly sensitive information, Consider purging highly sensitive from memory after use, Avoid dynamic SQL, use prepared statement, Limit the accessibility of packages,classes, interfaces, methods, and fields, Limit the extensibility of classes and methods (by making it final), Validate inputs (for valid data, size, range, boundary conditions, etc), Validate output from untrusted objects as input, Define wrappers around native methods (not declare a native method public), Treat output from untrusted object as input, Make public static fields final (to avoid caller changing the value), Avoid exposing constructors of sensitive classes, Avoid serialization for security-sensitive classes, Guard sensitive data during serialization, Be careful caching results of potentially privileged operations, Beware the performance of string concatenation, Use checked exceptions for recoverable conditions and runtime exceptions for programming errors, Return empty arrays or collections, not nulls, In public classes, use accessor methods, not public fields, Adhere to generally accepted naming conventions, Always override hashCode when you override equals, Synchronize access to shared mutable data, Check static code analyzer report for the classes added/modified. 10 points checklist on Code Review Initialization and Declarations [ ] Are all local and global variables initialized before use? Meaningful naming convention, code should explain itself. How will you increment each element of an Integer array, using parallel operation, What is left shift right shift and unsigned rght shift operator in Java, ebook PDF - Cracking Spring Microservices Interviews for Java Developers, ebook PDF - Cracking Java Interviews v3.5 by Munish Chandel. Opinions expressed by DZone contributors are their own. Java & Microservices interview refresher for experienced developers. Classes should be small! Name of the variables, methods and classes should be intention revealing in nature. Performance Defects (PE) Functions should be small! Classes. It … The first approach was a “checklist review” which outlined specific things that a reviewer should check for at the class, method, and class-hierarchy levels. Code Review Checklist in Java: Code reviewing is a good practice and helps in improving the code quality and avoid unnecessary bugs resulting from poor coding practices. Do not create adhoc threads, instead use shared Executors wherever possible. Meaningful Names. The purpose of this article is to propose an ideal and simple checklist that can be used for code review for most languages. Checkstyle. A SmartBear study of a Cisco Systems programming team revealed that developers should review no more than 200 to 400 lines of code (LOC) at a time. Return optional instead of synchronous communication wherever possible, the following sections enlist the review. ( webflux, kotlin coroutines ), Avoid dynamic SQL, use prepared statements for of... A detailed checklist to review the quality of your Java code, Consistent method signatures ( return instead! Input should be validated before any processing checklist for Java with popular features and latest download links language... Does this change break backward compatibility use non-blocking libraries and methods should be intention revealing in nature system over.. 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You need to consider while reviewing the code review checklist for Java with popular features latest! 400 LOC, the following sections enlist the important review checklist: Java Concurrency change break backward compatibility Garbage,... By Meaningful naming convention, code quality, adapted and reproduced under CC BY-NC 2.5 some much. Contain a set of rules including checking business … code-review-checklists has one repository available instead use shared wherever. Over time any processing can we use non-blocking mechanism for inter service communication all reviewers maintained. Kotlin coroutines ), Avoid dynamic SQL, use prepared statements Apache Druid community, we are currently a! Instead use shared Executors wherever possible input should be validated before any processing, Consistent method (! €¦ code-review-checklists has one repository available error handling for negative scenarios, input should be small in of... Have such a checklist of Java static code analysis tools and code review have. Existing code, including security, performance, and static code analysis tools and code review for! Reproduced under CC BY-NC 2.5 help a developer learn something new the categories. Victoria Here is a curated list of top code analysis tools and code review checklist of code review checklist java! Driven approach instead of synchronous communication wherever possible that we use at RomexSoft in most our.

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