difference between interface and implementation

Abstract class and interface are the two mechanisms in the Java language to support the definition of a class, and it is precisely because of the existence of these two mechanisms that it gives Java a powerful object-oriented capability. Abstract

Go to http://yinny.iteye.com/blog/1152430#bc2372045The difference between an interface and an abstract class:1The interface is the core, which defines what to do, contains many methods, but does not define how these methods should be done。2If many

The difference between abstract class and interface and its application(This article is provided by Zhang Yang)Abstract class and interface (Interface) are two important concepts in object-oriented programming. Since there are many similarities

In Ood (object-oriented design), abstract classes or interfaces are often used, "note: in C + +, there is no concept of interfaces, only abstract classes, and both exist in Java." In the process of use, there may be many people think that the

Learning Java must know: the difference between an abstract class and an interfaceAbstract class and interface are the two mechanisms in the Java language to support the definition of a class, and it is precisely because of the existence of these

(Source http://hi.baidu.com/dgx_lsyd3/blog/item/8f710ed7ca49badda144dfd0.html) ---------------------------------------------Explanation 1:Abstract class and interface are two mechanisms supported for the definition of abstract classes in Java. It

Java in Java interface is ' interface ' meaning, and Java class declaration with class, that is, interface with interface declaration, class is declared with class, is two separate parts.Only when a class declares to implement an interface do they

Just ended J2SE's study, in the J2SE, mentioned the Java interface and the abstract class, they function similarly, then they have what difference? How to apply it? I query a lot of information, sorting knowledge as follows, if there are errors,

1) When inheriting an abstract class, each of the abstract methods in the class must be overridden, and each implemented method must receive the same number and type of parameters as the method specified in the abstract class, with the same return

in theJavain language, abstract class andInterfaceis to supportAbstract classtwo types of mechanisms defined. It is the existence of these two mechanisms that gives Java a powerful object-oriented capability. 　　Understanding Abstract ClassesAbstract