why use interface

The reason for the existence of three keywords in the interface:Public: Interfaces can be inherited by other interfaces, can also be implemented by classes, classes and interfaces, interfaces and interfaces may form a multi-level relationship, the

Chapter 4 Interface Not long ago, a friend engaged in software gave me a riddle. Face-to-face is a "Blind Date", which makes me guess a software term. After about a minute, I guess the answer is "Object-Oriented ". I think it's quite interesting. I

For Java programmers, Java access rights modifiers public, protected, default, private and the difference between the use is certainly not a problem, here is no longer verbose, anyway, niang a search on a lot of. Recently, when finishing the

The reason for writing this article stems from some technical discussions within the group. In fact, effective Java's item 37 has discussed marker Interface in detail. But from the whole item's point of view, it is in fact a positive attitude to the

IntroductionInterface is a very important element in object-oriented programming language, it is described as a set of services, for the client, we are only concerned about the services provided, but not the implementation of the service, for the

If someone asks you why you have an abstract interface modified class, the answer must be that the way he sees it must be the result of the decompile. There is no difference between abstract interface and interface-modified classes in practice.

In the JDK source code, there are some interfaces, they do not contain any (abstract) methods, but there are widespread.This interface we call Mark Interface, which is the tag interface.These interfaces, we do not have to implement any method, their

First, PrefaceWhy now qt More and more become the first choice of interface programming, the author of the QT Interface programming has been nearly 8 years, before this I do C + + interface is based on MFC, also done about 5 years. At that time why

"http://www.goodprogrammer.org/"target="blank">android培训------我的java笔记，期待与您交流！In an abstract class, you can include one or more abstract methods, but in an interface (interface), all methods must be abstract and cannot have a method body, which is

Explanation: Why does the server Daniel never use a graphical interface? In our daily life, most of our network names use Windows OS, while Microsoft initially designed the OS to allow more people to use it, also made a lot of user-friendly design.