accessing java string

[soonho]

Hi all,   I created a JVM (JNI_CreateJavaVM), then now I would like to accessing java string through GetStringUTFChars. Before I can use GetStringUTFChars, I have to FindClass and GetMethodID?   Since GetStringUTFChars(env, string, isCopy) is so simple, doesn't involve methodID and so on, I don't know how this string can be passed to native program.   For example, i wanna to get java string s1 from java side. My C native side have to assign jstring s1? How it can get jstring from java? Java have to return String s1?   Thank you   soonho