JNI C++ interaction kit to alleviate the pain a bit.

JNIKit is a small project to help you interact with running or new JVM instances by wrapping around the JNI C++ interface and providing a much cleaner and object-oriented approach on the API. See below for examples to get an impression.

Let's imagine we'd hook into a running VM and would want to do stuff with a class we know:

JNIKit kit = JNIKit::attachAny(); // Pick the first running VM we can find
JavaClass *myClass = kit.getClass("my/package/MyClass"); // Load my.package.MyClass
// .. do something with myClass now.

Easy, eh? What about altering a static field:

JavaField *myField = kit.getStaticField("my/package/MyClass", "myField", "Ljava/lang/String;"); // Resolve..
myField->set(nullptr); // Set the field to null.. or whatever you wish to set it to.

A breeze. All the ugly jclass and jobject and the likes are done under the hood. You get to work with the pretty classes.

You can also create new classes from bytecode. An example being:

JavaClass *created = kit.defineClass("my/package/MyClass", "path/to/folder/containing/MyClass.class");

.. and then you can, for example create a new instance:

auto instance = created->constructNew();

.. or maybe invoke a static method:

auto method = created->getStaticMethod("testFunction", "(Ljava/lang/String;)V");
method->invoke(kit.createString("hello from c++")->jniRef());