Run local java applet in browser (chrome/firefox) "Your security settings have blocked a local application from running" -

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i'm trying run java applet (html file), browser keeps saying:

"your security settings have blocked local application running"

i have tried using chrome , firefox same error. have upgraded latest version of java, chrome still says in

chrome://plugins/ "download critical security update"

even though can run java applets (not locally)

im using ubuntu 13.04 64 bit

after reading java 7 update 21 security improvements in detail mention..

with introduced changes no end-user able run application when either self-signed or unsigned.

..i wondering how go loose class files - 'simplest' applets of all.

local file system

dialog: security settings have blocked local application running
your security settings have blocked local application running

that dialog seen applet consisting of loose class files being loaded off local file system when jre set default 'high' security setting.

note slight quirk of jre produced on point 3 of.

  1. load applet page see broken applet symbol leads empty console.
    open java settings , set level medium.
    close browser & java settings.
  2. load applet page see applet.
    open java settings , set level high.
    close browser & java settings.
  3. load applet page see broken applet symbol & above dialog.

internet

if load simple applet (loose class file) seen @ resizable applet demo off internet - boasts applet element of:

<applet     code="plafchanger.class"     codebase="."     alt="pluggable look'n'feel changer appears here if java enabled"     width='100%'     height='250'> <p>pluggable look'n'feel changer appears here in java capable browser.</p> </applet>

it seems load successfully. implying that:-

applets loaded local file system subject stricter security sandbox loaded internet or local server.

security settings descriptions

as of java 7 update 51.

  • very high: most secure setting - java applications identified non-expired certificate trusted authority allowed run.
  • high (minimum recommended): java applications identified certificate trusted authority allowed run.
  • medium - all java applications allowed run after presenting security prompt.

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