public Class<?> findClass(String name) throws ClassNotFoundException
{try{}//内容省略
catch(Exception e)
{throw new ClassFoundException(name+"not found"};
return null;  //返回空指针会报错，Unreachable code
}

貌似你再"not found"后面漏了);
ClassFoundException是你自己定义的异常类还是你漏了Not?
我添加了完毕编译也没出现异常，如果你调用了findClass方法，然后用返回的Class类再调用方法会出现
nullPointerException异常

1. public Class<?> findClass(String name) throws ClassNotFoundException
   
2.         {try{}//内容省略
   
3.         catch(Exception e)
   
4.         {throw new ClassNotFoundException(name+"not found");};
   
5.         return null;  //返回空指针会报错，Unreachable code
   
6.         }

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