我们可以为字符串调用Object类的toString（）方法吗

Question

can we call the toString() method of the Object class for a String

String string = new String("Hello");
System.out.println(string);

for a string the overrided method is called in the String. Are there any way to call the toString() method of the Object class for a String

I want to print out the memory address for the String object

Answer 1

No, you can not call the overridden method. However, you could mimic the output of the Object 's toString() (which basically only uses the hashCode) as follows:

string.getClass().getName() + "@" + Integer.toHexString(string.hashCode())

*edit: As noticed by Taemyr in the comments, an even closer mimic, that does not use the hashCode defined by String , would be:

string.getClass().getName() + "@" + Integer.toHexString(System.identityHashCode(string))

Answer 2

不，为什么？..因为该方法被覆盖 ，所以基于对象类型 ，在运行时 ， 总是调用String类中的方法

Answer 3

No you can't, once a subclass overrides a parent's member (function or variable), you can't reach them from outside that class. that is the whole principle of encapsulation and inheritance (child classes having different behaviour than parent).