Unexpected Signal : EXCEPTION_ACCESS_VIOLATION

Here is my JNI file. Can u help me? Thanks a lot.

#include <stdio.h>

#include "Main.h"

JNIEXPORT jdouble JNICALL Java_Main_calculateAreaOfCircle(JNIEnv *env, jobject obj, jdouble radius)

{

const jdouble PI = 3.1415926535;

jdouble area = PI * (radius * radius);

return area;

}

JNIEXPORT void JNICALL Java_Main_calculate

(JNIEnv *env, jobject jThis, jobject dim, jobject jbox){

jclass cls;

jclass result;

jfieldID fid1, fid2,fid3, fid4,fid5;

jfieldID red_f, blue_f, green_f;

jstring shapeStr;

//jmethodID mid;

int value1;

int value2;

int area;

int volume;

const char *str;

//Getting values from Java and parsing it to C++

cls = env->GetObjectClass(dim);

fid1 = env->GetFieldID(cls, "l", "I");

fid2 = env->GetFieldID(cls,"b", "I");

fid5 = env->GetFieldID(cls, "shape","Ljava/lang/String;" );

shapeStr=(jstring)env->GetObjectField(dim, fid5);

//mid = env->GetMethodID(cls, "divByTwo", "()V");

value1 = env->GetIntField(dim, fid1);

value2 = env->GetIntField(dim, fid2);

str= env->GetStringUTFChars(shapeStr, NULL);

if(str==NULL){ printf("OUT of Memmory "); return; }

printf(" String value =\"%s\"\n", str);

env->ReleaseStringUTFChars(shapeStr, str);

//Calculation

area=value1*value2*6;

volume=value1*value2*value1;

//Setting Result

result= env->GetObjectClass(jbox);

fid3 = env->GetFieldID(result,"area", "I");

fid4 = env->GetFieldID(result,"volume", "I");

env->SetIntField(jbox, fid3, area);

env->SetIntField(jbox, fid4, volume);

jfieldID fid6 =env->GetFieldID(result,"ColorArray", "[ColorArray");

jobject colorResult_obj= env->GetObjectField(jbox,fid6);

jclass color_class =env->FindClass("ColorArray");

jmethodID mid=env->GetMethodID(color_class, "<init>", "()V");

jobject array_obj=env->NewObject(color_class,mid);

jobjectArray color_obj_array;

red_f = env->GetFieldID(color_class,"red", "I");

blue_f = env->GetFieldID(color_class,"blue", "I");

green_f= env->GetFieldID(color_class,"green", "I");

jint red_j, blue_j, green_j;

color_obj_array = (jobjectArray)env->NewObjectArray(1,color_class,array_obj);

red_j = 10;

blue_j= 20;

green_j= 30;

env-> SetIntField(array_obj,red_f,red_j);

env-> SetIntField(array_obj,blue_f,blue_j);

env-> SetIntField(array_obj,green_f,green_j);

env->SetObjectArrayElement(color_obj_array,1,array_obj);

env->SetObjectField(colorResult_obj, fid6, color_obj_array);

}

java pgm follows

class Main

{

static

{

System.loadLibrary("MathFuncsImp");

//System.loadLibrary("FixedStatic_Interface");

}

public native double calculateAreaOfCircle(double radius);

public native void calculate(Dim dim, Jbox jbox);

public static void main(String[] args)

{

Jbox ResultJbox = new Jbox();

Main mf = new Main();

int radius = 10;

double area = mf.calculateAreaOfCircle(radius);

System.out.println("Area of circle with radius " + radius + " is " + area);

int l = 10;

int b = 10;

Dim dim = new Dim(l,b,"Square");

mf.calculate(dim, ResultJbox);

int area1 = ResultJbox.area;

int volume = ResultJbox.volume;

ColorArray[] colArray = ResultJbox.colArray;

System.out.println("Area of Box with length " + l +

" and Breadth" + b +" --> "+area1+" and Volume is -->"+volume+"ColorArray -->"+colArray);

}

}

DeepaJ at 2007-7-1 21:12:30 >

Also: NewStringUTF takes an input parameter that is filled by the runtime system indicating whether or not the string was copied as part of the conversion.

You don't know, because you just pass a NULL argument.

You should be checking to see if there was a copy done before you call Reelease. Otherwise, who knows what you are releasing?

bschauwe at 2007-7-1 21:12:30 >