JString to char *

Question

Hi,
i have a problem with the conversion of a char* to string i do not get where the mistake is in the code of the native function:
JNIEXPORT jstring JNICALL Java_Main_get_1name(JNIEnv *env, jobject jobj, jint param)
char buf = (char*)malloc(max_char);
//Call the function in fortran
strcpy(buf, Getname(param +1));
return (*env)->NewStringUTF(env, buf);
The errors which comes are:
e:\Proyecto\wrapper\wrapper.cpp(81): error C2227: el operando izquierdo de '->NewStringUTF' debe se�alar a class/struct/union
e:\Proyecto\wrapper\wrapper.cpp(81): error C2819: el tipo 'JNIEnv_' no tiene un miembro sobrecargado 'operator ->'
anyone knows why?

Answer 1

Yup, muchas gracias
but i have another problem: i�m passing a fortran dll a char* in order to recalculate its elements, but it is not working. Anyone knows why?
What i am doing is like follows:
SUBROUTINE GETNAME(VALUE, ARRAKY)
!MS$ATTRIBUTES DLLEXPORT,C,ALIAS:'_Getname'::GETNAME
INCLUDE 'COMMON.LVG'
INTEGER VALUE
CHARACTER(*) ARRAKY
WRITE(*,*) "The INPUT is ", ARRAKY
WRITE(*,*) "The FORTRAN is ", MOL(VALUE)
ARRAKY= TRIM(MOL(VALUE))//CHAR(0)
WRITE(*,*) "The ARRAKI is ", ARRAKY
END SUBROUTINE GETNAME
being call in the way:
extern "C" __declspec(dllexport) char* Getname(char * ,int ,int );
//string, str_length, element
JNIEXPORT jstring JNICALL Java_Main_get_1name(JNIEnv *env, jobject jobj, jint param) {
char buf = (char)malloc(80);
buf = " ";
Getname(80, buf, 80);
printf("%s",buf);
return env->NewStringUTF(buf);
but the results are like before:
The INPUT is h //???
The FORTRAN is O23H
The ARRAKI is O //?????
And as i said after leaving the fortan code, the value is not updated