RMStudio on HackerShow

Dev tools

java in browser demo

SHOW HN2017

300k lines of Java UI code running as JavaScript in browser

Shown by jeffreportmill1 on Sep 28, 2017. Click the card to turn it over.

154points

66comments

#244of 2,242 in 2017

Top 11%of 2017 by points

How HN took it

MixedNo clear lean

3 positive, 6 neutral or asking, 3 mixed, 10 critical, out of 22 comments about the project. Thread score -0.23.

Execution: 1 for, 3 againstPerformance: 1 for, 3 againstIdea: 1 for, 2 againstDesign: 0 for, 2 against

Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.

positive neutral or mixed critical about another commenter or something else the maker

Slow load times and large download size
From 3 comments
- I’m on a 2G mobile connection right now, and that site refuses to load. I’m going to guess this has something to do with bundling all of Java, but surely there must be a better…
  nneonneo on HN
- Uhh... It seems very bad. I clicked "Run RMStudio DOM" in Chrome. It loaded dozens of java packages for half a minute, and then showed me a 90s looking splash screen with three…
  recursive on HN
- it's impressive, granted. But it feels like a parody, the long loading-time, the horrible UI, the weird scrolling. It just screams Java.
  LeanderK on HN
Poor accessibility
From 1 comment
- This is really nifty as a proof of concept, major kudos to the authors. However, it completely kills accessibility, so it's probably best to avoid for any serious projects. I've…
  TheAceOfHearts on HN
Swing-style UI feels dated and parody-like
From 2 comments
- it's impressive, granted. But it feels like a parody, the long loading-time, the horrible UI, the weird scrolling. It just screams Java.
  LeanderK on HN
- Ah, the cycle is complete. Straight back to Java Applets now that we have 8000000 layers of abstraction in the middle. Good riddance horrific ball of JS/HTML/CSS
  throwawaydbd on HN
Performance concerns with heavy rendering
From 2 comments
- And how's performance? I have a terrible feeling this is really slow.
  neurotrace on HN
- Some of their demos were very slow and reminded me of old java applets.
  jbergens on HN

Firefox support
From 1 comment
- "We test extensively on the latest versions of Chrome and Safari. For the best experience, we recommend Chrome." Why no FF? What could possibly cause them not to support it? Any…
  kelvin0 on HN
Mobile keyboard input fix
From 1 comment
- runs on my iphone, but text input doesn't seem to trigger the appearance of the keyboard. Other than that, it's pretty impressive.
  bsaul on HN

Is WebAssembly used?
From 1 comment
- This is impressive! Are they using WebAssembly here?
  killjavascript on HN
How file and network I/O work
From 1 comment
- How file and network I/O works here?
  fenesiistvan on HN

GWT
From 2 comments
- Appears the tech behind this "cheerpj" a java transpiled to javascript[1] system that appears to contain all of openjdk including swing(!?!). That's kind of cool actually. But…
  le-mark on HN
- See also GWT if you are just hell bent on running Java in the browser. As one of our developers commented, 'it is webforms all over again'. Also see…
  kenoyer130 on HN
Java applets
From 2 comments
- This is really nifty as a proof of concept, major kudos to the authors. However, it completely kills accessibility, so it's probably best to avoid for any serious projects. I've…
  TheAceOfHearts on HN
- Yes, around 1996-97 there was a lot of hype around desktop applications delivered as applets. E.g. Corel Office for Java: http://www.edm2.com/index.php/Corel_Office_for_Java
  pavlov on HN
Vaadin
From 1 comment
- Vaadin [1], a fairly popular open-source Java UI framework, is still using GWT on the clientside, but it's more of an implementation detail given that the whole point of Vaadin…
  Sharlin on HN