[jboss-dev-forums] [Javassist Development] - Why creating a new CtTypeClass while compiling

ami tabak [https://community.jboss.org/people/amitabakoptier] created the discussion "Why creating a new CtTypeClass while compiling" To view the discussion, visit: https://community.jboss.org/message/777037#777037 -------------------------------------------------------------- A Question regarding the usage of CtClass I have a scenario where I first add a new field to the class and then add insertBefore which is using that new field. I noticed javassist on the insertBefore has access to the CtClass (1^st^ image) but later on when looking up the new field it goes through MemberResolver. lookupClass0 The problem is that if anyone added via public CtClass makeClass(InputStream classfile)  non synchronized method a CtClass based on the original byteCode I will not find the new member I just added. My questions are 1. Why do we need to look up the CtClass in the pool if we had it at the beginning of the insertBefore flow ?  e.g. use the same instance throughout the flow 2. Why are some of the ClassPool makeClass syncronized and some are not ? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/777037#777037] Start a new discussion in Javassist Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]