Finding path to JRE

[Murrgon]

Is there some official way to find the location of the OS's
JRE? I am running a win2k system and I want to start up the
JVM using JNI_CreateJavaVM(). However, to be able to
GetProcAddress() this function I first need to be able to
find the jvm.dll and LoadLibrary() it.

Thanks
Murrgon

 

[Andrew Thompson]

Is there some official way to find the location of the OS's
JRE?

you might try..
<http://www.physci.org/pc/properties.jsp?prop=java.home+sun.boot.library.classpath>
...in the downloadable *application* of course
(it is an unsigned applet therefore cannot
access those protperties)

HTH

 

[Thomas Kellerer]

Is there some official way to find the location of the OS's
JRE? I am running a win2k system and I want to start up the
JVM using JNI_CreateJavaVM(). However, to be able to
GetProcAddress() this function I first need to be able to
find the jvm.dll and LoadLibrary() it.

Thanks
Murrgon

The source ZIP for the JDK contains the C code for the Java launcher as
well. You might want to have a look at the code to find out how it finds
the JDK/JRE. I guess this would be the "most official" way

Thomas

 

[Murrgon]

The source ZIP for the JDK contains the C code for the Java launcher as
well. You might want to have a look at the code to find out how it finds
the JDK/JRE. I guess this would be the "most official" way

Good suggestion. I took a look at the code and they're just reading the
details from the registry. I am assuming that each platform that is
supported has their own method for retreiving this info.

Murrgon

 

[Roedy Green]

Is there some official way to find the location of the OS's
JRE? I am running a win2k system and I want to start up the
JVM using JNI_CreateJavaVM(). However, to be able to
GetProcAddress() this function I first need to be able to
find the jvm.dll and LoadLibrary() it.

If you use Java Web Start they find it for you. You just give you
list of preferences.