NullAway
SDKMan
NullAway | SDKMan | |
---|---|---|
21 | 160 | |
3,530 | 5,857 | |
1.0% | 0.7% | |
8.9 | 4.3 | |
2 days ago | 7 days ago | |
Java | Gherkin | |
MIT License | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
NullAway
-
What if null was an Object in Java?
Fortunately, Uber made tooling for languages with broken type systems
* https://github.com/uber/NullAway
* https://github.com/uber-go/nilaway
-
My Thoughts on “Bad Code”
Some patterns arise from language design
* You can't express `T` where `null` is forbidden in the type system so you get NullPointerException everywhere and defensive null checks.
* You express a sum type as a product type because your language does not have sum types .
* Your language doesn't have first class multiple return values (or tuples) so you return extra parameters via out parameters or thread local variables such as `errno`.
* Your language doesn't have exceptions (or algebraic effects) and can't do IO so you have monad transformers.
* Your language doesn't have set-theoretic types so you need hacks like `thiserror` .
* Your language doesn't have stackful coroutines or can't infer async IO for you so you have `async/await` spam or callback hell or "mono's".
* Your language doesn't have exhaustive checks (or pattern matching) so you need a fallthrough case check on switch statements .
* Your language doesn't have algebraic effects, so you need to pass context everywhere.
I know someone will reply about Java's null annotation checking options, so here is one of them: https://github.com/uber/NullAway .
-
Will Project Valhalla bring Kotlin-like nulls to Java?
If you must use Java, use Uber's Nullaway which gives null safety via Errorprone.
-
Retrofitting null-safety onto Java at Meta
Does anyone have experience using this at Meta who can compare to https://github.com/uber/NullAway ?
-
How to use Java Records
A special kind of validation is enforcing that record fields are not null. (Un)fortunately, records do not have any special behavior regarding nullability. You can use tools like NullAway or Error Prone to prevent null in your code in general, or you can add checks to your records:
- Backend Java 19 vs Kotlin?
-
What does the future hold for Project Amber?
What do you think of https://github.com/uber/NullAway
-
Plans for Compile-time Null Pointer Safety?
Take a look at NullAway, a plugin for Error Prone.
-
Ask HN: What is a modern Java environment?
PMD, Spotbugs, Nullaway: Java linting/static analysis (https://pmd.github.io, https://spotbugs.github.io, https://github.com/uber/NullAway)
- Nullaway fully supports switch expressions without issues now in 0.9.5
SDKMan
-
Install Asdf: One Runtime Manager to Rule All Dev Environments
I would suggest learning how to use SDKMAN: https://sdkman.io/
It will manage the JDK for you. Usage is basically this:
# Install a JDK, that version is now default
-
Groovy 🎷 Cheat Sheet - 01 Say "Hello" from Groovy
Alternatively, you can use sdkman. A great tool to install your Software Development Kit. The downside is that it only works on *nix systems. So for Widnows users, you will have to use WSL or Cygwin as the official page suggests. It is really simple to use sdkman. after a successful installation, just type those commands into your *nix shell:
-
Java Microservices with Spring Boot and Spring Cloud
To run the example, you must install the Auth0 CLI and create an Auth0 account. If you don't have an Auth0 account, sign up for free. I recommend using SDKMAN! to install Java 17+ and HTTPie for making HTTP requests.
- Criando ambiente de desenvolvimento Java no Windows - sem wsl
-
Installing and managing Java on macOS
Another option for installing Java is SDKMAN!, a versatile tool that’s easy to install and helps you manage multiple versions of Java.
-
Build a Beautiful CRUD App with Spring Boot and Angular
Java 17
-
Authentication for Spring Boot App with Authgear and OAuth2
Java 17 or higher. You can use SDKMAN! to install Java if you don't have it already.
-
Creating a Ktor Server with Gradle and SDKMAN!: A Step-by-Step Guide
Ktor, a powerful web framework built with Kotlin, offers a lightweight and flexible solution for building web applications. In this article, we will guide you through the process of creating a Ktor project manually using Gradle and SDKMAN!. By following the steps below, you'll have a basic Ktor project up and running in no time.
-
First time Linux user
If you have any tips/advice then I'm all ears. I've already modified the dnf.conf with fastmirror and max_parallel_downloads I'm currently not using sdkman because this is my personal machine, so I don't mind always using the latest version OpenJDK. If I ever do need to switch between versions then I'll switch over to sdkman instead.
-
MOOC.fi question - Is there a way to automatically default to JDK 17 to where I don't have to set up an SDK every single time?
For handling your JDK: I highly recommend purging your system of all JDKs/JRMs - get rid of it all - and download SDK (if you're using Windows, you'll need to do this through WSL). This tool manages software development kits very well; switching between JDKs is super straightforward: sdk use .
What are some alternatives?
SonarQube - Continuous Inspection
jenv - Manage your Java environment
Error Prone - Catch common Java mistakes as compile-time errors
asdf - Extendable version manager with support for Ruby, Node.js, Elixir, Erlang & more
infer - A static analyzer for Java, C, C++, and Objective-C
jabba - (cross-platform) Java Version Manager
Spotbugs - SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.
Homebrew-cask - 🍻 A CLI workflow for the administration of macOS applications distributed as binaries
FindBugs - The new home of the FindBugs project
nvm - Node Version Manager - POSIX-compliant bash script to manage multiple active node.js versions
Checkstyle - Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly configurable. It can be invoked with an ANT task and a command line program.
asdf-nodejs - Node.js plugin for asdf version manager