Java如何动态加载JAR文件呢？

实现思路:
    使用Class.forName加载指定JAR文件
 

URLClassLoader child = new URLClassLoader(
        new URL[] {JARURL.toURI().toURL()},
        this.getClass().getClassLoader()
);
Class classToLoad = Class.forName("com.java265.com", true, child);
Method method = classToLoad.getDeclaredMethod("myMethod");
Object instance = classToLoad.newInstance();
Object result = method.invoke(instance);