Applets choosing preferred JRE version

[Sugantha Jeevankumar]

Hi.. I have a scenario where a machine has JRE 1.5 and a higher version, say JRE 1.6_11. My applet, when deployed supports only JRE 1.5. Is there an option to set the preferred JRE version when a specific applet is loading.

Changing the JRE version in Java Control panel and the browser's options are not the desired solutions because the customer wants all other applets to work with JRE 1.6 and this particular applet to work with JRE 1.5. Is there a way to do this..? Thanks in advance..

[Ulf Dittmer]

I think you're going about this the wrong way. A much better way would be to ask: "why is the code not compatible with Java 6?" and then to address that issue.

[Sugantha Jeevankumar]

Actually, We have tried running the application with JRE 1.6 and there are a lot of compatibility issues to handle like,

Discrepancies in the way mouse events behave.
The application closing down suddenly.

This application is a huge legacy app and right now it is not practical for us to migrate the same to 1.6 JRE. What the customer would like to have is a workaround, so that the this application can use JRE 1.5 in a machine with JRE 1.5 and 1.6.

[Sugantha Jeevankumar]

I found out a way to do this... by editing the classid attribute of Object tag to..

classid="clsid:CAFEEFAC-0015-0000-0000-ABCDEFFEDCBA" . This ensures 1.5 version of JRE gets used.