call win32 api from java

**bapu** · November 1st, 2010, 01:20 PM

how can i call win32 API from java using JNI?
i don't want to use other commercial packages to download and install.
it should be done only by jvm and i have vc++ installed.
plz submit any code and steps required to do so?
i tried this but does not work and gives runtime error :

public class NewMain
{
        static{System.load("C:\\WINDOWS\\system32\\kernel32.dll");}
        native private static short GetSystemDefaultLangID();
 
        public static void main(String ss[])
        {
            System.out.print(GetSystemDefaultLangID());
        }
 
}

**helloworld922** · November 1st, 2010, 06:51 PM

Please use highlight tags. If you're unsure how to get started with JNI, I would suggest looking at Chapter 5 Continued: JNI Example and Enhance your Java application with Java Native Interface (JNI) - JavaWorld

**JavaPF** · November 2nd, 2010, 04:15 AM

Wheres Freaky Chris when you need him!

**Time** · November 7th, 2010, 09:42 AM

I recomend using JNA, Website Here

It's much more simplistic,

Then use this sample code:

import com.sun.jna.Native;
import com.sun.jna.win32.StdCallLibrary;
 
public interface Kernel32 extends StdCallLibrary {
 
    Kernel32 INSTANCE = (Kernel32) Native.loadLibrary("kernel32", Kernel32.class);
 
    short GetSystemDefaultLangID();
 
}

Accessing it as:

Kernel32.INSTANCE.GetSystemDefaultLangID()

If you have any questions Id be happy to explain

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