Java - is `null` an instance of `object`?

Question

I read that null isn\'t an instanceof anything, but on the other hand that everything in Java extends Object class.

Answer 1

Hoping that this example clears your doubt :

public void printObject(Object object) {
    System.out.println("object referred");
}

public void printObject(double[] doubleArray) {
    System.out.println("Array of type double");
}

public static void main(String[] args) {
    JavaNullObjectTest javaNullObjectTest = new JavaNullObjectTest();

    javaNullObjectTest.printObject(null); //Array of type double

    javaNullObjectTest.printObject((Object)null); //object referred
}

We can but, convert a 'null' to object.