How to use the Mill SCALALIB framework for Java library development

Mill Scalalib is an open source framework for the development of Java libraries.It is based on the SCALA language and provides some powerful functions and tools to simplify and accelerate the development process of the Java class library.The following will introduce how to use the Mill SCALALIB framework to develop Java libraries and provide some example code. ## Environment settings First, you need to ensure that Scala and Mill Scalalib is installed in the local environment.You can download and install SCALA through the official website, and use the following command to install Mill Scalalib: $ curl -L https://github.com/lihaoyi/mill/releases/download/0.9.9/0.9.9 > mill && chmod +x mill ## Create project It is very simple to use Mill SCALALIB to create a new Java class library project.Just follow the steps below: 1. Run the following commands to create a new project: $ mill your_project_name.init This will create a new project directory in the current directory and initialize the Mill Scalalib project. 2. Enter the newly created project directory: $ cd your_project_name 3. Configure the dependencies and other settings in the `Build.sc` file.For example, you can specify the SCALA version and other external dependencies of the project. ## Develop Java Library In Mill Scalalib, the SCALA language can be used to write the Java library.The following is a simple example. Demonstrate how to use Mill Scalalib to develop a simple Java class library: scala import mill._ import mill.scalalib._ object your_project_name extends JavaModule { def scalaVersion = "2.13.6" def javacOptions = T{ Seq( "-source", "1.8", "-target", "1.8" ) } def sources = T.sources { millSourcePath / "src" } } In the above example, we created an object called `Your_project_name`, inherited from` javamodule`.This object defines the SCALA version of the project, the Java compilation option, and the source code path. In the `sourcess` method, we designate the source code path of the project.In this example, we assume that the source code file is located in the `src` directory. ## It is also very simple to build and release the Java class library with Mill Scalalib.Just follow the steps below: 1. Run the following commands to build items: $ mill your_project_name.compile This will compile the source code of the project and generate the construction product. 2. If you want to release the product, you can run the following command: $ mill your_project_name.publishLocal This will be released in the local Maven warehouse for other projects for use. ## Summarize Mill SCALALIB is a powerful framework that can be used to simplify and accelerate the development process of the Java class library.This article introduces how to use Mill SCALALIB for Java library development, and provides example code to help readers better understand and use the framework.Hope this article can help you!