title: Is there any visual tool for writing Java classes in Bytecode for Eclipse or IntelliJ?
body: <p>I'm not asking for an opinion here - just a fact: is there a plugin, tool, or technique that lets me write classes or at least method bodies directly in bytecode in Java in either Eclipse or IntelliJ, and what is it?  I'm not looking for runtime codegen, I want this at compile time.</p>
  
  <p>I found one here: <a href="https://plugins.jetbrains.com/plugin/8461-bytecode-editor" rel="nofollow noreferrer">https://plugins.jetbrains.com/plugin/8461-bytecode-editor</a> but there is no download link and I have no idea how to build it (I tried, I really did).  But it's basically everything I want.</p>
  
  <p>In .NET I use the excellent IL Support plugin for this, but I haven't found a similar solution for Java.</p>