Analysis of bytecode libraries As I can tell from the answers you got here and ones in the questions that you have looked at, these answers do not formally address the question in the explicit manner you have stated. You asked for a comparison, meanwhile these answers have vaguely stated what one might want based … Read more
ASM java-asm CGLIB and almost all other libraries are built on top of ASM which itself acts on a very low level. This is a show-stopper for most people as you have to understand the byte code and a little bit of the JVMS to use it properly. But mastering ASM is most certainly very … Read more
Yes, Spring does some magic. Check the Spring Docs: This is where the magic comes in: All @Configuration classes are subclassed at startup-time with CGLIB. In the subclass, the child method checks the container first for any cached (scoped) beans before it calls the parent method and creates a new instance. This means that the … Read more
JDK Dynamic proxy can only proxy by interface (so your target class needs to implement an interface, which is then also implemented by the proxy class). CGLIB (and javassist) can create a proxy by subclassing. In this scenario the proxy becomes a subclass of the target class. No need for interfaces. So Java Dynamic proxies … Read more