Java starter project for coding exercise setup. This is mainly to prove that the development environment is setup correctly to compile and test code. Namely:
- Java 11 JDK is installed and working.
- Gradle, Maven or SBT is installed and working. Any of them is fine (if you have them installed, otherwise go with Gradle).
- Gradle/Maven/SBT is able to download any necessary libraries.
- You have a working IDE (if you are used to using one). IntelliJ IDEA or Eclipse are typical. Whatever you prefer.
If you're starting from scratch and unsure how to proceed, go with the Oracle Java JDK, Gradle and IntelliJ IDEA CE. A good starting point if you need some help installing the JDK and Gradle: Installing Java.
The following will build the code and run the unit tests, and (if you want to) run the main function code as well. SDKMAN! is a good tool for managing these tools.
$ gradle clean build
$ java -cp build/libs/java-starter.jar monme.HelloWorld
Hello, World!
$ mvn clean package
$ java -cp target/java-starter-1.0.jar monme.HelloWorld
Hello, World!
$ sbt clean test package
$ java -cp target/java-starter-1.0.jar monme.HelloWorld
Hello, World!
Choose whichever one you're most comfortable working with. Make sure you can import the project, browse the classes, and run the unit test and have it pass successfully.
The Community Edition of IDEA is fine.
You should be able to simply "import" the project using the build.gradle file, the pom.xml file, or the build.sbt file.
The JEE edition is recommended as you'll get a lot of useful plugins automatically, although we shouldn't be working with any JEE specific code.
You should be able to import the project using a Gradle/SBT plugin, but Eclipse seems to have better built-in support for Maven. The "import" is pretty simple and you should be up and running very quickly.
Visual Studio Code works well for Java development. There are a lot of extensions available. Some recommendations:
- Java Extension Pack from Microsoft
- Language Support for Java from Red Hat