import java.lang.reflect.Modifier;

public class IntegerReflection {
    public static void main(final String[] args) {
        System.out.println(String.format("int.class == Integer.class -> %b", int.class == Integer.class));
        System.out.println(String.format("int.class modifiers: %s", Modifier.toString(int.class.getModifiers())));
        System.out.println(String.format("Integer.class modifiers: %s", Modifier.toString(Integer.class.getModifiers())));
    }
}

int.class == Integer.class -> false
int.class modifiers: public abstract final
Integer.class modifiers: public final

System.out.println(Modifier.toString(int.class.getModifiers()));

public abstract final

int a = new int();

System.out.println(int.class.getSuperclass());

int a = 4;
System.out.println(int.class.isInstance(a));

Method[] intMethods = int.class.getMethods();

if(intMethods.length == 0) {
    System.out.println("No methods.");
}
else {
    for(Method method : intMethods) {
        System.out.println(method.getName());
    }
}

Constructor[] intConstructors = int.class.getConstructors();

if(intConstructors.length == 0) {
    System.out.println("No constructors.");
}
else {
    for(Constructor constructor: intConstructors) {
        System.out.println(constructor.getName());
    }
}

Field[] intFields = int.class.getFields();

if(intFields.length == 0) {
    System.out.println("No fields.");
}
else {
    for(Field field: intFields) {
        System.out.println(field.getName());
    }
}

> a. Should be accessible from within the language: Make it `public`
> b. Should not be extensible                     : Make it `final`
> c. Should not be instantiated with `new`        : Make it `abstract`.

mirror::Class* ClassLinker::InitializePrimitiveClass(ObjPtr<mirror::Class> primitive_class,
                                                     Primitive::Type type) {

  Handle<mirror::Class> h_class(hs.NewHandle(primitive_class));
  // public final static
  h_class->SetAccessFlags(kAccPublic | kAccFinal | kAccAbstract);
  h_class->SetPrimitiveType(type);
  h_class->SetIfTable(GetClassRoot(kJavaLangObject)->GetIfTable());

  // ...
  return h_class.Get();
}

public class absBase{

    private string name;
    private int ID;

    public abstract int GetID();
}

public class concreteClass:absBase{
    @Override
    public int GetID(){
        return ID + 1;
    }
}