Code reviews are essential to code quality, but usually, no one in the team wants to review tens of thousands of lines of code. At the Apache Druid community, we are currently preparing a detailed checklist to be used during code reviews. 14. Proper unit tests that covers the functional requirements. 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. 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. Java & Microservices interview refresher for experienced developers. Initialization and Declarations [ ] Are all local and global variables initialized before use? Existing libraries and methods should be reused wherever possible. ... java checklist concurrency code-review thread-safety race-conditions java-concurrency 77 … Checklist: Description/example: Use of descriptive and meaningful variable, method and class names as opposed to relying too much on comments. What is Double Checked Locking Problem in Multi-Threading? A review of a non-trivial patch involving concurrency should take at least one hour (for some patches much, much more). What do you understand by Java Memory Model? | Standard Code formatting across project. can we write a java method that swaps two integers. Can use patterns to simplify concurrency? 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. Are the Java class libraries used where and when appropriate? Java Inspection Checklist. When a experienced person is reviewing the code then there are a number of check points which should be … 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. 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. Meaningful naming convention, code should explain itself. Utilize this checklist to review the quality of your Java code, including security, performance, and static code analysis. Performance Defects (PE) Code becomes less readable as more of your working memory is r… 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 It … Concurrency is rationalized? 24 views. It covers security, performance, and clean code practices. Developer Pick one word per concept. of the repetitive code? Use Solution/Problem Domain Names. by 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 . The brain can only effectively process so much information at a time; beyond 400 LOC, the ability to find defects diminishes. 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. In practice, a review of 200-400 LOC over 60 to 90 minutes should yield 70-90% defect discovery. Code review checklist for Java developers, Submit Form with Java 11 HttpClient - Kotlin, Difference between HashMap, LinkedHashMap and TreeMap. Java Code Review Checklist. code-review-checklists has one repository available. Meaningful Names. Let’s review each of them. Do not reinvent the wheels. Code Review Checklist Raw. Opinions expressed by DZone contributors are their own. Java Code Review Checklist 1. There is no one size fits all for code review checklists. Specification / Design [ ] Is the functionality described in the specification fully implemented by the code? We know NullPointerExceptionis the most common exception in Java and can cause big problems. Synchronize access to shared mutable data. Readability in software means that the code is easy to understand. Code review can have an important function of teaching developers something newabout a language, a framework, or general software design principles. There are plethora of Code Review Tools in the market and selecting one for your project could be a challenge. This checklist can contain a set of rules including checking business … 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. When reading through the code, it should be relatively easy for you to discern the role of specific functions, methods, or classes. code-review-checklists has one repository available. Author: Victoria 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. Checkstyle. E.g. Are object and array references set to null once the object or array is no longer needed? Here is a checklist of Java static code analysis tools, that we use at RomexSoft in most of our projects. Classes and methods should be small in terms of number of lines. Storage Usage Defects (SU) Are arrays large enough? 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). Using Pub/Sub or event driven approach instead of synchronous communication wherever possible. Did I grasp the concepts in a reasonable amount of time by looking at the code? Java Code Review Checklist by Mahesh Chopker is a example of a very detailed language-specific code review checklist. Whether synchronous inter service communication can be avoided? Java Inspection. 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. 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. 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. Carvia Tech | The main idea of this article is to give straightforward and crystal clear review points for code revi… 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. Release resources after use (File Handles, db connections, etc), Avoid dynamic SQL, use prepared statements. A personal code review simply involves reading through the code and using the review checklist to look for errors. Code consistency with the existing culture of writing the code, Consistent method signatures (return optional instead of null for Java code). 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: Marketing Blog. Meaningful Names. 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. Classes. Side effect on existing code, does this change break backward compatibility? How to handle service invocation failures. Functions should be small! Code formatting. These tips are independent of language and equally apply to Java, .NET or C++ code. 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. The Code Review Checklist For each of the above categories, the following sections enlist the important review checklist items. Name of the variables, methods and classes should be intention revealing in nature. calculateGst(BigDecimal amount), BalanceLoader.java, etc. Use Intention-Revealing Names. The team should communicate with each other and agree on a code review checklist. 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… Code Review Checklist: Java Concurrency. While going through the code, check the code formatting to improve readability and ensure that there are no blockers: a) Use … 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. , agreed upon by all reviewers and maintained along the way functionality in the software Engineering Institute 's software! 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