如果我说所有 Java 对象都是多态的，是否正确？
Is it correct if I say that all Java objects are polymorphic?
既然所有Java classes都继承自super-class Object，我们是否可以得出所有Java对象是多态的？
是的，完全正确。
如this tutorial
所述
In Java, all Java objects are polymorphic since any object will pass
the IS-A test for their own type and for the class Object.
Class Object is the root of the class hierarchy. Every class has
Object as a superclass
因此每个对象都具有来自 Object class 的属性，例如 public String toString() 方法。
既然所有Java classes都继承自super-class Object，我们是否可以得出所有Java对象是多态的？
是的，完全正确。
如this tutorial
In Java, all Java objects are polymorphic since any object will pass the IS-A test for their own type and for the class Object.
Class Object is the root of the class hierarchy. Every class has Object as a superclass
因此每个对象都具有来自 Object class 的属性，例如 public String toString() 方法。