java - super class not assignable to class implemented during runtime by asm -

i have java class consist of inner interface, , plan implement implementation class during runtime asm bytecode injection.

package my.example; public class x{     public static interface xint{         public void getx();     }     //the following class implement interface defined during runtime.     //i put here show how implementation     public static ximpl extend y implements xint{         public void getx(){//implementation code}     } } 

i sure asm code correct, thing after defining class , call class.forname("my.example.x$ximpl"), following error:

> bad <init> method call exception details:   location:     my/example/x$ximpl.<init>()v: invokespecial   reason:     type 'my/other/package/y' not assignable 'my/example/x$ximpl' 

my guess class y not available during runtime yet? have no idea.. appreciated!

edit: way load ximpl simple:

defineclass("my.example.x$ximpl", getximplbyte()); class.forname("my.example.x$ximpl"); //fails here 

the reason why im sure byte code , class loading method right because if define implementation class without extending other class, work fine

seems asm classloader isn't child of x classloader, there 2 different classes (even though identical), can't casted each other.

try use:

method m = classloader.getdeclaredmethods("defineclass", string.class, byte[].class, int.class, int.class); m.setaccessible(true); m.invoke(x.class.getclassloader(), ...);