Java

class JavaHowTo {    public native long getCurrentProcessId();    static {      System.loadLibrary("jni2");    }  }

```{.java} public class JNIJavaHowTo { public static void main(String[] args) { JavaHowTo jht = new JavaHowTo(); System.out.println("Press Any key..."); java.io.BufferedReader input = new java.io.BufferedReader(new java.io.InputStreamReader(System.in)); try { input.readLine();} catch (Exception e) { e.printStackTrace();} System.out.println(jht.getCurrentProcessId()); } }

```{cpp}  // jni2.cpp : Defines the entry point for the DLL application.  //    #include "stdafx.h"  #include <process.h>  #include "JavaHowTo.h"     BOOL APIENTRY DllMain( HANDLE hModule,                          DWORD  ul_reason_for_call,                          LPVOID lpReserved                       )  {      return TRUE;  }    JNIEXPORT jlong JNICALL Java_JavaHowTo_getCurrentProcessId    (JNIEnv *, jobject) {         // return GetCurrentProcessId();      return getpid();  }