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How are reference types organized in java native interface?


Asked by Aniya Berger on Dec 06, 2021 Java



JNI reference types are organized in the following hierarchy: jobject jclass(java.lang.Classobjects) jstring(java.lang.Stringobjects) jarray(arrays) jobjectArray(object arrays) jbooleanArray(booleanarrays) jbyteArray(bytearrays) jcharArray(chararrays) jshortArray(shortarrays) jintArray(intarrays) jlongArray(longarrays) jfloatArray(floatarrays)
Consequently,
The JNI includes a number of reference types that correspond to different kinds of Java objects. JNI reference types are organized in the following hierarchy: jobject jclass(java.lang.Classobjects)
Also Know, The reference types hold the references of objects. All reference types are a subclass of type java.lang.Object. It provides access to the objects stored in the memory. The examples of reference data types are class, interface, String, Arrays, etc. Java Reference Types. There are the following five types of reference types in Java:
Also,
This means that if a variable is declared to be the type of an interface, its value can reference any object that is instantiated from any class that implements the interface. Can anyone provide me a basic pseudo type for this.
In this manner,
JNIEnv*: reference to JNI environment, which lets you access all the JNI functions. jobject: reference to " this " Java object. We are not using these arguments in this hello-world example, but will be using them later. Ignore the macros JNIEXPORT and JNICALL for the time being.