How to achieve the expansion of the Java class library in the JRuby Complete framework

How to achieve the expansion of the Java class library in the JRuby Complete framework JRuby is a Ruby interpreter running on the Java platform, which allows developers to write code in the Java environment.Although JRUBY itself has provided many Ruby standard libraries and expansion libraries, sometimes we may need to use some Java -class libraries in JRuby to interact with Java code or use the Java class library. The following is the step to implement the Java library expansion in the JRuby Complete framework: 1. Install JRuby Complete: First of all, you need to download and install JRuby Complete from JRuby's official website (https://www.jruby.org).Make sure your Java environment is configured correctly. 2. Import Java class library: Put the Java library file (usually ended in the .jar expansion) you want to use in JRUBY in your project directory.For example, if you want to use a Java class library called Mylib.jar, put the file in your project directory. 3. Configure ClassPath: Before visiting the Java class library in your JRUBY code, you need to add the path of the Java class library to the classpath.It can be implemented by setting the "java.class.path" system attribute of Java.The following is a sample code fragment that adds the directory where mylib.jar is located to classpath: ruby require 'java' java.lang.System.setProperty("java.class.path", "/path/to/mylib.jar") Please replace the `/path/to/mylib.jar` in the code to your actual Java class library path. 4. Import java class library: In the JRuby code, use the `java_import` or` Import` statement to import the Java class library you need to use.The following is a sample code fragment, which imports a Java class library called Mylib: ruby require 'java' java_import 'com.example.MyClass' This will make the `MyClass` class available in the JRuby code. 5. Java class library: Now you can use the imported Java library in the JRuby code.For example, the following is a sample code fragment, a method of using the MyClass class: ruby my_object = MyClass.new my_object.do_something Please note that you need to follow the Java class library and API documentation when using the Java library. Summarize: The steps to implement the Java class library expansion in the JRUBY Complete framework include: installing JRBY Complete, importing Java libraries, configuration of ClassPath, imported Java libraries, and Java class libraries.Make sure you configure the correct classpath and use the corresponding API according to the usage of the Java class library. The above is a brief introduction to implementing the Java library expansion in the JRuby Complete framework.Hope to help you!