3 replies to this topic

[der gini]

Hi,

I just want to know if java is installed on my system. until now i tried with:
FindFile(WINSYSDIR, "java.exe"...
but there are people with java installed in another directory and PATH=...

any ideas?

best regards,
gini

[Perotin]

If JRE is installed with the original installer (and not just copied and included into path) you can check for the registry key HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment, here you will find the variable "CurrentVersion" which gives the version.
The subkey with the version number has a variable cvalled "JavaHome" which gives the path to the JRE and in the subdirectory bin of this path you find java.exe etc.

[der gini]

thanks. but i want a solution for any java installation - and a trainee found it:

nResult = LaunchApp('javaw.exe','');
if(nResult < 0) then
  // do it.
endif;

that's it :-)

regards, gini

[Perotin]

This solution only works if javaw.exe ist registered with its application path ...
So if an application copies the complete jre and uses just the programs with their relative path to the starting program/batch you could fail with the suggested solution.
But in most cases this should work :-)