CODEWITHSUNDEEP
javaappletjava-8
Sairam Krish
Sairam Krish

Reputation: 11701

Why 32bit JRE is needed to run certain applets when 64bit JRE is already installed

Let me provide an example, Juniper's Network connect is a Java applet. This applet doesn't run from a ubuntu 64 bit OS with 64bit Java (JDK or JRE). To run this, their support site suggest to install 32 bit JRE.

Additional info: Verify Java applet - successfully verifies that the browser is able to run Java applets. Browser is 64 bit (Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:31.0) Gecko/20100101 Firefox/31.0 )

I am unable to understand the fundamental need for a 32 bit JRE when 64 bit JRE is already available ? Can some one explain this. This will help many.

Upvotes: 4

Views: 1315

Answers (1)

piet.t
piet.t

Reputation: 11911

In Windows- and *ix-systems there is no way to make a call from a 32-bit-executable to a 64-bit dynamic library (.dll or .so). So there's two possibilities one might need to use a 32-bit-jdk:

  1. The application is getting called from a native 32-bit-aplpication like a 32-bit-browser
  2. The java-application contains JNI-calls to native libraries that are only delivered as a 32-bit-version.

With an applet 1. is the most likely reason - but from your edit it seems more like 2. in your case.

Upvotes: 2

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