JRuby Complete framework Java class library introduction and use tutorial

JRuby is a Ruby interpreter based on the Java platform, which allows developers to use the code written by Ruby in the Java environment.The JRuby Complete framework is a expansion package of JRuby, which provides a rich Java class library that helps developers to better integrated Ruby code in Java applications. In this tutorial, we will introduce the use steps of the JRuby Complete framework and provide relevant code examples and configurations. Step 1: Install JRuby Complete First, you need to install the JRuby Complete framework into your Java development environment.You can download the latest version of JRuby Complete from JRuby's official website (https://www.jruby.org/download).After the download is completed, decompress the file and add JRBY Complete's jar file to the class path of your Java project. Step 2: Write the Ruby code Next, you need to write some Ruby code and integrate it into the Java application.The following is a simple example: ruby # hello.rb class HelloWorld def initialize(name) @name = name end def say_hello puts "Hello, #{@name}!" end end hello = HelloWorld.new("JRuby Complete") hello.say_hello In this example, we define a Ruby class called HelloWorld, which has an initialization method and a say_hello method.The instance of this class will print a greeting message. Step 3: Ruby code is called in Java Now, we will show how to call the Ruby code written above in Java.First of all, you need to create a Java class, and then use the JRuby Complete framework API to load and call the Ruby code.The following is an example: import org.jruby.embed.ScriptingContainer; public class JRubyIntegration { public static void main(String[] args) { ScriptingContainer container = new ScriptingContainer(); container.runScriptlet("require './hello.rb'"); } } In this example, we use the ScriptingContainer class to load the Hello.rb file.You can then call the Ruby class and method, just like calling the Java code. Step 4: Run java application Finally, you need to compile and run the above Java code.Make sure that the jar file of JRuby Complete is in the class path, and your Java development environment has been correctly configured. The compilation command is shown below: bash javac -classpath jruby-complete-X.X.X.jar:. JRubyIntegration.java The running command is shown below: bash java -classpath jruby-complete-X.X.X.jar:. JRubyIntegration Make sure X.X.X is replaced with a version number of JRuby Complete. When you run the Java application, you will see the output on the console: Hello, JRuby Complete! This is the basic step of using the JRuby Complete framework.You can write more complicated Ruby code in Java applications according to your needs, and use the rich Java class library provided by JRuby Complete to strengthen integration. I hope this tutorial can help you understand the basic usage of the JRuby Complete framework.If you need more detailed information or example code, please refer to the official document (https://www.jruby.org/documentation) and sample code.