I have this very simple class That i compiled with javac and then decompiled with javap to see its bytecode. Lets check offsets 0 – is reserved for “this” reference 1 – is the method parameter 2 – skipped ? 3 – variable “d” 4 – skipped ? 5 – variable “k” Why were offsets 2 and 4 skipped? Is
Tag: bytecode
In Java, verify all methods in a class path that are called actually exist within that classpath [closed]
Given a classpath (e.g. a set of jar files) I would like to know, do any of these jar files make a method call (ignoring reflection) to a method which doesn’t exist within the class path. For example …
What JVM optimization is causing these performance results? [closed]
In a Java REST service performance test, I got an unexpected pattern: a method that creates and returns always the same value object in each invocation runs faster than another version that just …
ASM: how to easily get proper Opcode based on type
I am using ASM to generate Java bytecode. I have a need to create a dynamic proxy which can override basically any kind of method with additional post-processing. I am able to do it all, but there is …