I have a doubt regarding bytecode, what present inside Java bytecode, I heard that Binary code + OS understandable information + heaxadecimal 16 digit key is present inside byte code. Is it true or anyother information is present inside it??
The bytecode contains all kinds of information, including the JVM instructions (which I guess is what you mean by "binary code"). I'm not sure what you mean by either "OS understandable information" or "hexadecimal 16 digit key".