Virtual Threads for a scripting language in Java 8 without Loom

Re:Virtual Threads for a scripting language in Java 8 withou... by jaccomo on Tuesday September 01, 2026 @10:40AM (#49522642)

Author here: Jactl is a secure embeddable scripting language that compiles to bytecode and supports Java 8 and later versions. The article describes how Continuations were used to provide Virtual Thread-like behaviour for scripts. Blocking operations suspend a script which is then resumed from where it left off once the operation completes.

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Re:Virtual Threads for a scripting language in Java 8 withou... by marcolinux on Friday September 04, 2026 @04:01AM (#49561852)

TIL about jactl! Just reading the site right now. Many thanks for: no colored function (no async/wait) !

Any tips on using with gui/swing? rendering images/simple html, that would be awesome!

And what about (gasp) JSP? Or any other templating? It is old school, yeah but I like jsp include (with params) and jsp 'web components' (tags).

Anyway, thanks for writing jactl!

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Re:Virtual Threads for a scripting language in Java 8 withou... by arunix on Friday September 04, 2026 @10:05AM (#49564850)

On the front page, there is an example about optional typing, but it's not very clear how the typing is coming in:

  def fib(x) { x <= 2 ? 1 : fib(x - 1) + fib(x - 2) }
  
  println "40th fibonacci number is ${fib(40)}"

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