Accessing Java Strings from C

I use this as the docs say, to convert:
JNIEXPORT jstring JNICALL
Java_SpeedProcess_exec(JNIEnv *env, jobject obj, jstring prompt)
char buf[128];
const char str = (env)->GetStringUTFChars(env, prompt, 0);
printf("%s", str);
(*env)->ReleaseStringUTFChars(env, prompt, str);
but when I try to compile, I get:
Compiling...
HelloWorldImp.cpp
c:\java\NativeCode\HelloWorldImp.cpp(13) : error C2819: type 'JNIEnv_' does not have an overloaded member 'operator ->'
c:\Program Files\j2sdk_nb\j2sdk1.4.2\include\jni.h(750) : see declaration of 'JNIEnv_'
did you intend to use '.' instead?
c:\java\NativeCode\HelloWorldImp.cpp(13) : error C2227: left of '->GetStringUTFChars' must point to class/struct/union
type is 'JNIEnv'
did you intend to use '.' instead?
c:\java\NativeCode\HelloWorldImp.cpp(15) : error C2819: type 'JNIEnv_' does not have an overloaded member 'operator ->'
c:\Program Files\j2sdk_nb\j2sdk1.4.2\include\jni.h(750) : see declaration of 'JNIEnv_'
did you intend to use '.' instead?
c:\java\NativeCode\HelloWorldImp.cpp(15) : error C2227: left of '->ReleaseStringUTFChars' must point to class/struct/union
type is 'JNIEnv'
did you intend to use '.' instead?
c:\java\NativeCode\HelloWorldImp.cpp(50) : error C2561: 'Java_SpeedProcess_exec' : function must return a value
c:\java\NativeCode\HelloWorldImp.cpp(9) : see declaration of 'Java_SpeedProcess_exec'
Build log was saved at "file://c:\java\NativeCode\Debug\BuildLog.htm"
NativeCode - 5 error(s), 0 warning(s)
Anyone?

I solved it, thanks

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Edited by: EttoreMI on 10-nov-2011 7.21

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