Impossible to get a String field with GetFieldID !!!!!!

Question

Hi, I write here my classes and explain my problem :
------------------------- Class Lexicon.java ---------------------------
package SlpTkJava.JavaCode;
public class Lexicon {
public native void next(SearchReturn search);
static {
System.loadLibrary("slptkjava");
--------------------------- Class SearchReturn.java --------------------
package SlpTkJava.JavaCode;
public class SearchReturn {
public LexItem access;
-------------------------- Class LexItem.java --------------------------
package SlpTkJava.JavaCode;
public class LexItem {
public int lemma;
public String graphy;
--------------------------- File Lexicon.c -----------------------------
* Class: SlpTkJava_JavaCode_Lexicon
* Method: next
* Signature: (LSlpTkJava/JavaCode/SearchReturn;)V
JNIEXPORT void JNICALL Java_SlpTkJava_JavaCode_Lexicon_next(JNIEnv *env,
                                   jobject obj,
                                   jobject search){
jfieldID accessFID, graphyFID, lemmaFID;
jclass searchReturnCls, lexItemCls;
jobject access;
searchReturnCls = (*env)->FindClass(env, "SlpTkJava/JavaCode/SearchReturn");
if ((*env)->ExceptionOccurred(env)){
(*env)->ExceptionDescribe(env);
(*env)->ExceptionClear(env);
accessFID = (*env)->GetFieldID(env, searchReturnCls, "access", "LSlpTkJava/JavaCode/LexItem;");
if ((*env)->ExceptionOccurred(env)){
(*env)->ExceptionDescribe(env);
(*env)->ExceptionClear(env);
access = (*env)->GetObjectField(env, search, accessFID);
if ((*env)->ExceptionOccurred(env)){
(*env)->ExceptionDescribe(env);
(*env)->ExceptionClear(env);
lexItemCls = (*env)->FindClass(env, "SlpTkJava/JavaCode/LexItem");
if ((*env)->ExceptionOccurred(env)){
(*env)->ExceptionDescribe(env);
(*env)->ExceptionClear(env);
lemmaFID = (*env)->GetFieldID(env, lexItemCls, "lemma", "I");
if ((*env)->ExceptionOccurred(env)){
(*env)->ExceptionDescribe(env);
(*env)->ExceptionClear(env);
graphyFID = (*env)->GetFieldID(env, lexItemCls, "graphy", "LJava/lang/String;");
if ((*env)->ExceptionOccurred(env)){
(*env)->ExceptionDescribe(env);
(*env)->ExceptionClear(env);
When I run this function in a testFile, I get this exception :
Exception in thread "main" java.lang.NoSuchFieldError: graphy
at SlpTkJava.JavaCode.Lexicon.next(Native Method)
at TestLexicon.main(TestLexicon.java:58)
I can't understand because the system can load the int field from the "access" object and not the String field !
I can precise that I'm on Solaris.
Please help me it's urgent !
Thank you.
Zigune

Answer 1

I think your problem is:
graphyFID = (*env)->GetFieldID(env, lexItemCls, "graphy", "LJava/lang/String;");
should be
graphyFID = (*env)->GetFieldID(env, lexItemCls, "graphy", "Ljava/lang/String;");
i.e. java/lang/String - java is lower case.