如何自定义类加载器_网易js加载器下载地址

public class CustomClassLoader extends ClassLoader {
	
	protected Class<?> findClass(String name) throws ClassNotFoundException {
		try {
			byte[] result = getClassFromCustomPath(name);
			if(result == null) {
				throw new FileNotFoundException();
			} else {
				return defineClass(name, result, 0, result.length );
			}
		} catch(Exception e) {
			e.printStackTrace();
		}
		throw new ClassNotFoundException(name);
	}
	
	private byte[] getClassFromCustomPath(String name) {
		// 从自定义路径中加载指定类
		return null;
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		CustomClassLoader customClassLoader = new CustomClassLoader();
		System.out.println(customClassLoader);
		try {
			Class<?> clazz = Class.forName("One", true, customClassLoader);
			Object obj = clazz.newInstance();
			System.out.println(obj.getClass().getClassLoader());
		} catch(Exception e) {
			e.printStackTrace();
		} 
	}
}