今天,我们来说说java面向对象最核心的东西,多态.通过多态可以使我们的程序可复用性达到极致,这就是我们为什么要学多态的原因. “多态”(Polymorphic)也叫“动态绑定”(Dynamic Binding)同时也叫“迟绑定”(Late Binding). 动态绑定是指“在执行期间(而非编译期间)判断所引用对象的实际类型,根据其实际类型调用其相应的方法.” 程序代码: public class TestPolymorphic{ public static void main(String a…

Reference: JavaPoint BeginnerBook What is Binding Connecting a method call to the method body is known as binding. There are two types of binding static binding (also known as early binding): binding solved at compile time dynamic binding (also known…

调用方法时,如何决定调用对象还是其父类的方法呢? 在JVM中,根据实际类型(actual type)调用.而非声明类型(declared type),如果实际类型的类中没有该方法,就会沿着inheritance chain向上追溯. 直到找到同名方法为止,这就叫做dynamic binding(动态捆绑).…

Java面向对象的最重要的一个特点就是多态, 而多态当中涉及到了一个重要的机制是动态绑定(Dynamic binding). 之前只有一个大概的概念, 没有深入去了解动态绑定的机理, 直到很多公司都问到了动态绑定的实现, 然后...就真的没有然后了. 痛定思痛, 在<Core Java>找到了相关的章节,也算是对动态绑定的实现有了一个大概的了解. 对象是Java中最重要的概念, 弄清楚对象方法的调用执行过程会对Java对象有更深层了理解.下面是<Core Java>中对调用过程的详…

static binding/dynamic binding class Person { private void who() { System.out.println("Inside private method Person(who)"); } public static void whoAmI() { System.out.println("Inside static method, Person(whoAmI)"); } public void whoAr…

http://stackoverflow.com/questions/20187587/what-is-the-difference-between-dynamic-dispatch-and-late-binding-in-c http://programmers.stackexchange.com/questions/200115/what-is-early-and-late-binding/200123#200123…

Introduction I was struggling to find the solution to bind rdlc dynamically to reportviewer .We had a scenario were we migrated our application from .NET 1.1 to .NET 2.0 .After migration embedding reportviewer with explicit objectdatasource was creat…

Dynamic dispatch动态调度.动态分发 In computer science, dynamic dispatch is the process of selecting which implementation of a polymorphic operation (method or function) to call at run time. It is commonly employed in, and considered a prime characteristic of…

dynamic a = 10;a = a + 10;Console.WriteLine(a.GetType()); 此段代码会输出 System.Int32,第二行不需要类型转换,因为在运行时识别类型.dynamic 在后台使用 System.Object 类型.但与 object 不同的是,动态类型不需要在编译时执行显式转换操作,因为它仅在运行时识别类型.关于dynamic和object的详细区别,看看<What is the difference between “dynamic” and…

https://developer.apple.com/library/content/documentation/General/Conceptual/DevPedia-CocoaCore/DynamicTyping.html#//apple_ref/doc/uid/TP40008195-CH62-SW2 A variable is dynamically typed when the type of the object it points to is not checked at comp…