Win a copy of Testing JavaScript Applications this week in the HTML Pages with CSS and JavaScript forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
  • Campbell Ritchie
  • Bear Bibeault
  • Ron McLeod
  • Jeanne Boyarsky
  • Paul Clapham
  • Tim Cooke
  • Liutauras Vilda
  • Junilu Lacar
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • fred rosenberger
  • salvin francis
  • Piet Souris
  • Frits Walraven
  • Carey Brown

Quick question before starting

Posts: 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
This should be an easy one (I hope)...
Are there any compatability issues I should take in concern before developing an applet? E.g. what's the difference if the visitor uses Sun's JRE (old or new) or MS JVM?
Saloon Keeper
Posts: 22282
Android Eclipse IDE Tomcat Server Redhat Java Linux
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Netscape 4.7 (and older) and Internet Explorer (up to about 5.5) run using antiquated versions of Java - somewhere around release 1.02. The security system is more primitive and there's no Swing classes - just to mention two major issues. Additionally, Microsoft went and wrapped a whole raft of Windows functions in a set of classes that no other Java ever supported.
However, Netscape 4.7 may someday die off (Mozilla and Netscape 6+ are much better, anyway) and newer IEs have no Java capacity at all. To make the newer Netscape/Mozilla and IE browsers run applets, you must download and install the Java Plug-In. As must all the applet's users. It only has to be done once, but it's a major problem, since the file is something like 1.5MB or more. Dial-up users with slow modems tend not to appreciate this, and even users with fast links often avoid installing plugins. Fortunately, Dell and HP/Compaq have started bundling Java with their newer computers.
For maximum portability, then, code using only the old Java classes. However, if the power of a modern-day Java implementation is more important, use the Java Plug-In.
Ranch Hand
Posts: 424
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Isn't it 15 MB + (not 1.5) (because of rt.jar)???
Message for you sir! I think it is a tiny ad:
Thread Boost feature
    Bookmark Topic Watch Topic
  • New Topic