JNI : converting a propertie to String/jstring

[EExtasEE]

Hi everybody, i want to retrieve an enumeration of ALL JVM properties
but i got a problem converting Properties into jstring/string

jclass sys;
jmethodID met;
jstring ret;
jobject obj2;


//getting properties enumeration
sys = (*env)->FindClass (env, "java/lang/System");
met = (*env)->GetStaticMethodID (env, sys,
,getProperties","()Ljava/util/Properties;");
obj2 = (jstring)(*env)->CallStaticObjectMethod(env, sys, met);

return obj2;

value returned : h
°'°'°'°'External.classPK


best regards,

 

[Alan Cabrera]

Won't this return the Properties object, not a string?

Regards,
Alan

 

[EExtasEE]

Alan Cabrera a écrit :

Won't this return the Properties object, not a string?

Regards,
Alan

obj2 = (jstring)(*env)->CallStaticObjectMethod(env, sys, met);<---this
doesn't mean that im making a cast into jstring format?(i have tried to
cast into jcharArray)

 

[Gordon Beaton]

obj2 = (jstring)(*env)->CallStaticObjectMethod(env, sys, met);<---this
doesn't mean that im making a cast into jstring format?(i have tried to
cast into jcharArray)

Casting does not magically convert the Properties object into a String
or any other type.

If you want to display the individual properties, you need to extract
them individually using methods provided by java.util.Properties.

/gordon

 

[EExtasEE]

Gordon Beaton a écrit :

Casting does not magically convert the Properties object into a String
or any other type.

If you want to display the individual properties, you need to extract
them individually using methods provided by java.util.Properties.

/gordon

mouarf.
Why is the life so hard ?
Thank you for your answer mister gordon.

 

[Chris Uppal]

mouarf.
Why is the life so hard ?

If it were pleasant and easy to do then they wouldn't be paying you to do it...

(On the other hand, if you are writing JNI code and /not/ being paid for it,
then life is indeed hard ;-)

-- chris

 

[EExtasEE]

Chris Uppal a écrit :

EExtasEE wrote:




If it were pleasant and easy to do then they wouldn't be paying you to do it...

(On the other hand, if you are writing JNI code and /not/ being paid for it,
then life is indeed hard ;-)

-- chris

Im not paid to do that, im a student.