Adding continuations to the JVM would be really useful for JVM language designer. I worked on this topic a couple of years ago for my MSc thesis, I implemented

Adding continuations to the JVM would be really useful for JVM language designer. I worked on this topic a couple of years ago for my MSc thesis, I implemented continuations exploiting the exception mechanism, this made implementing async/await relatively easy https://andrebask.github.io/thesis/ https://andrebask.github.io/thesis/