When I do a call to the toString() by doing phone.toString() from the outer class it also does the things in the private Phone class without me telling it to. Why is that?

public String getPhone() return phone.toString); // inner class Phone used by class Contact only private class Phone String number; Phone(String inNum) char nextDigit int k; // store only digits "213-555-1212" becomes "2135551212" for (k 0, number-""; k