JNI accessing non primitive data type

[H_P]

Hello

I have a JNI method to access java method which returns an Integer object. I do not want to return the primitive int type because this code will be modified to handle Generic objects. The following is what I have. I am not able to get the value of the Integer that I pass. The output at C++ side is something like

    value = 0x4016f3d0

How can I get the actual value of Integer object that I pass at C++ end?

Please help.

Thanks,

-H

GenericPeer.cpp

    JNIEXPORT void JNICALL Java_GenericPeer_print (JNIEnv *jenv, jclass jcls, jobject data){
     jclass peerCls = jenv->GetObjectClass(data);
     jmethodID mGetValue = jenv->GetMethodID(peerCls, "getValue","()Ljava/lang/Integer;");
     if(mGetValue == NULL){
       return (-1);
     } 
     jobject value = jenv->CallObjectMethod(data, mGetValue);
     cout<<"value = "<<value<<endl;

    }

GenericPeer.java

public class GenericPeer {
    	public static native void print(Data d);
    	static {
    		System.load("/home/usr/workspace/GenericJni/src/libGenericJni.so");
    	}
    }

Data.java

public class Data {
    	private Integer value;
    	pubilc Data(Integer v){ 
    		this.value = v;
    	}
    	public Integer getValue() { return value; }
       	public void setValue(Integer value) {
    	this.value = value;
    	}
    }

Test.java (Main class)

public class Test {
    	public static void main(String[] args){
           Integer i = new Integer(1);
    		Data d = new Data(i);
    		GenericPeer.print(d);
    	    	}
    }

[toadaly]

The Integer class is not native. It's byte code. There is no acceptable way to access it as a c++ class except to write a c++ wrapper that makes jni calls back to the java world. The only other option is to write a byte code interpreter (or buy one, or partner with someone who has one).

If you can explain your motivation for wanting the equivalent of *value, we might be able to help you come up with a different way of satisfying that objective.