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Look question Parameter passing in native a method. What to do if I want to write a native method Traverser (String path), which returns a value? How do I convert a long int type in C in Java type that returns a native method Traverser (String path)? For example how to transform long int to jlong? If I want to write a method 

public native long Traverser (String path),

whether will be correct this code

JNIEXPORT jlong JNICALL Java_ParallelIndexation_Traverser(JNIEnv* env, jobject obj, jstring path) 
{ 
    long int result;
    const jbyte* path2 = env->GetStringUTFChars(path, nullptr); 
    if (path2 == nullptr) 
        return; 

    result=Traverser(path2); 

    env->ReleaseStringUTFChars(path, path2); 
    return result;
}

?

Or is it necessary to convert 

long int result

to 

jlong?

And whether Java_ParallelIndexation_Traverser is possible instead of

long int result;

to declare

jlong result;

?

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    what's the point of asking the same question again on the same forum when your previous one is still open? – Arham Oct 21 '12 at 16:21
  • @Arham Unless you don't see distinction in questions (look millimoose comments on http://stackoverflow.com/questions/12990929/parameter-passing-in-native-a-method - Don't move the goalposts. If your original question was answered, accept an answer and ask additional questions separately, instead of expanding the scope of one question forever)? – user1730626 Oct 21 '12 at 17:52
  • What happened when you tried it? – user207421 Oct 23 '12 at 10:17

0 Answers0