c调用jni问题(100)

java代码：public static int snd_Data(ArrayList data).......................c++:mid = env->GetStaticMethodID( cls, "snd_Data", "(Ljava/util/ArrayListI");
if(mid !=0).............................已经找到这个函数，可是我该怎么调用呢？ data参数该怎么传递？

我在用c++调用java的class文件，在c++中我只能用env->CallStaticIntMethod去调用这个函数，像这样： status = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
if (status != JNI_ERR) { cls = env->FindClass("cn/gov/cwl/dtclient/DTService");
if (cls==0) { cout < <"c++: not found class!" < <endl;
jvm->DestroyJavaVM();
............. ............. ............. mid = env->GetStaticMethodID( cls, "GetData", "(Ljava/lang/StringI");
if(mid !=0) { cout < <"c++: static method GetData found." < <endl;
square=-1;
jstring str;
str=(*env).NewStringUTF((const char*)snd);
ret = env->CallStaticIntMethod( cls, mid,str);
cout < <"c++: sendData return:" < < ret < < std::endl;
我不知道在C++中该怎么处理java的arraylist类型