Calling a synchronized method from a synchronized method, both from the same object

Why is the code below not deadlocking? I mean, after calling getNumber (.), The object of the Test class should be locked, so I should not have access to getNumber2 (.).

class Test() {
    synchronized int getNumber(int i){
        return getNumber2(i);
    }

    synchronized int getNumber2(int i) {
        return i;
    }

    public static void main(String[] args) {
        System.out.println((new Test()).getNumber(100));
    }
}

Conclusion:

100