testurlclassloader.java

一个很好的Java函数实例

package apibook.c5.s1;

import java.net.URLClassLoader;
import java.net.URL;
import java.net.MalformedURLException;

public class TestURLClassLoader {
  public TestURLClassLoader() {
  }
  public static void main(String[] args) {
    try {
        URL[] urls = new URL[] {new URL("file:p/")};

        // Create URLClassLoader
        ClassLoader cl = URLClassLoader.newInstance(urls);

        // Load p.Test using URLClassLoader
        Class c = cl.loadClass("p.Test");

        // Create new instance of p.Test
        c.newInstance();
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    } catch (InstantiationException e) {
        e.printStackTrace();
    }
  }

}