Recompiling a method[1], popping the stack frame, and re-entering the new method is a very, very common debugging pattern on the JVM. I miss it every day that I'm on vastly dumber platforms
https://www.jetbrains.com/help/idea/altering-the-program-s-e... -> https://www.jetbrains.com/help/idea/pro-tips.html#drop-frame
1: pedantically, you're recompiling the whole class, but usually it's only one method changing at a time unless things are really going bananas
DCEVM (RIP) allowed swapping the method signature, too, but that is a lot more tricky to use effectively during debugging (e.g. popping the stack frame doesn't magically change the callsite so if you added extra params it's not going to end well) e.g. https://github.com/TravaOpenJDK/trava-jdk-11-dcevm#trava-jdk...
