How to use instances of c++ classes in java

Question

I have some c++ class:

class Test{
  public:
    int a,b,c;
    Test(){
        a=b=c=3;
    }
};

How to use it in jvm? Like:

public static void main(String[] args){
    System.loadLibrary("Test")
    Test t=new Test();
    System.out.println(t.a+" "+t.b+" "+t.c);
}

In all examples that I found methods been are static-like, non dependent on instance