ABCL armed bear public LISP framework: integrated party with Java class library

ABCL armed bear public LISP framework: integrated party with Java class library ABCL (ARMED Bear Common Lisp) is a universal LISP implementation based on the Java virtual machine (JVM).It provides a flexible and powerful way to combine the Lisp language with the Java class library.This article will introduce how to integrate with the Java class library with the Java class in the ABCL armed bear public LISP framework and provide some Java code examples. 1. ABCL environment settings: First, make sure that the ABCL environment has been installed correctly.Install and configure according to the guidance of ABCL's official documentation. 2. Import java class library: To use the Java library in ABCL, you need to use the `javaclass` function to import the required class.Below is a simple example to demonstrate how to import the `ArrayList` class in the` java.util` package. lisp (require 'abcl-contrib) (javaclass "java.util.ArrayList") 3. Create a Java object: Once the Java class library is imported, the Java object can be created using the `jnew` function.The following example demonstrates how to create an instance of a `java.util.arrayList`. lisp (defvar *array-list* (jnew "java.util.ArrayList")) ;; Add element to ArrayList (jcall *array-list* "add" "Hello") (jcall *array-list* "add" "World") 4. Call the Java method: You can use the `jcall` function to call the Java object.The following example demonstrates how to call the `site` method and method of the` ArrayList` object. lisp (The size of Format T "ArrayList: ~ D ~%" (Jcall * Array-List * "SIZE")) ;; Get the elements in ArrayList (Format T "first element: ~ a ~%" (jcall * array-list * "get" 0)) (Format T "second element: ~ a ~%" (jcall * Array-List * "Get" 1)) 5. Use the static method of the Java class: To call the static method of the Java class, you can use the `jstative` function.The following example demonstrates how to use the static method of `jstatic` to call the` java.lang.math`. lisp (jstatic "java.lang.Math" "sqrt" 16) The above is a simple example, which shows how to integrate with the Java library in the ABCL armed bear public Lisp framework.Although the class in the example is the class in the `java.util` and` java.lang` bags, it can actually be integrated using any Java library. I hope this article can help you quickly understand how to integrate with the Java library in ABCL.By using ABCL's powerful features, you can easily interact between Lisp and Java to achieve more flexible and strong programming. If you have any questions, please check the official documentation of ABCL or refer to other related resources at any time.Wish you success when you use the ABCL armed bear public Lisp framework!