Java dynamically loads Jar,zip files using ClassLoader

Use of Java ClassLoader

Public class main {    public static void main (String[]  args)  {                 URL[] urls = new URL[] {};         Myclassloader classloader = new myclassloader (urls, null);         String path =  "E:/workspace/mapsdklibrary/libs/commons-codec-1.6.jar";         try {             classloader.addjar (New file (path). Touri (). Tourl ());             class<?> clazz = classloader.loadclass (" Org.apache.commons.codec.digest.DigestUtils ");             method md5method =&Nbsp;clazz.getdeclaredmethod ("Md5hex", Byte[].class);             object returnvalue = md5method.invoke (null,  "Hello world". GetBytes ( "Utf-8");             system.out.println ("length=") +returnvalue.tostring (). Length () + ", result=" +returnvalue.tostring ());             classloader.close ();                         /**             classloader cl = new urlclassloader ( New url[]{new file (Path). Touri (). Tourl ()});             class<?> clazz2 = classloader.loadclass (" Org.apache.commons.codec.digest.DigestUtils ");            Method md5Method2 =  Clazz.getdeclaredmethod ("Md5hex", Byte[].class);             object returnvalue2 = md5method.invoke (Clazz2.newinstance (),  "Hello world ". GetBytes (" Utf-8 "));             System.out.println ("Length=" +returnvalue2.tostring (). Length () + ", result=" +returnvalue2.tostring ());            **/        }  catch  (exception e)  {             e.printstacktrace ();        }    }     static class MyClassLoader extends URLClassLoader {         public myclaSsloader (url[] urls)  {            super ( URLs);         }        public  myclassloader (url[] urls, classloader parent)  {             super (urls, parent);         }         public void addjar (URL url)  {             this.addurl (URL);         }    }}

Java dynamically loads Jar,zip files using ClassLoader