JNI loadlibrary choosing dll or so

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Marcelo - 22 Jan 2006 22:00 GMT

Dear programmers,

I am having some trouble in order to determine the OS used by the JVM. I would
like to load some libraries but i don't know the system that is running it.

I would like to do something like:

static{
    if(Linux)
        System.loadLibrary("libHello.so");
    if(Windows)
        System.loadLibrary("Hello.dll");
}

Can you help me, please?

thanks a lot,

Marcelo

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Danno - 23 Jan 2006 05:54 GMT

Too much work

http://java.sun.com/j2se/1.4.2/docs/guide/jni/spec/design.html#wp679

package pkg;
class Cls {
native double f(int i, String s);
static {
System.loadLibrary("pkg_Cls");
}
}

Java will convert it automatically depending on the system. You may
have to do something else if you have code specific to Unix based OSs.

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Gordon Beaton - 23 Jan 2006 06:47 GMT

> I would like to do something like:
>
[quoted text clipped - 4 lines]
> System.loadLibrary("Hello.dll");
> }

This will fail in both cases. Juse specify the base name of the
library, i.e.:

System.loadLibrary("Hello");

The JVM will load "libHello.so" or "Hello.dll", whichever is
appropriate for the platform.

/gordon

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JNI loadlibrary choosing dll or so

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