difference between abstract class and interface in java

What is the difference between an interface and an abstract classWhat is the basis of your choice to use interfaces and abstract classes?Interface:Interface Animal { publicvoid eat (); Public void Travel ();}Abstract class:/*file name: Employee.java*/ Public

Abstract classes are used in the Java language to define abstractions. The following example:Employee.java File Code:/* File name: Employee.java */Public abstract class Employee{private String name;Private String address;private int number;Public Employee (string name, string address, int number){SYSTEM.OUT.PRINTLN ("C

What is the difference between an interface and an abstract classWhat is the basis of your choice to use interfaces and abstract classes?The concepts of interfaces and abstract classes are different. An interface is an abstraction of an action, and an abstract

In the learning of PHP object-oriented, will be in the abstract class and interface confusion, the role of almost why it is so easy to confuse, why not leave one? But in fact the difference between the two is still very large, if you can use PHP two methods, object-oriented programming will be more reasonable, clear and efficient. The use of the interfac

object type, but if a parent class is too many subclasses, this kind of judgment is very cumbersome * How to design the parent class? * 1. The parent class is typically designed as an abstract class or interface, where the interface is preferred, and the

What is the difference between an interface and an abstract class? What is the basis for using interfaces and abstract classes? The concepts of interfaces and abstract classes are different. The interface is the abstraction of actions, and the

What is the difference between an interface and an abstract classWhat is the basis of your choice to use interfaces and abstract classes?The concepts of interfaces and abstract classes are different. An interface is an abstraction of an action, and an abstract

What is the difference between an interface and an abstract classWhat is the basis of your choice to use interfaces and abstract classes?The concepts of interfaces and abstract classes are different. An interface is an abstraction of an action, and an abstract

Transfer from http://blog.csdn.net/fenglibing/article/details/2745123What is the difference between an interface and an abstract classWhat is the basis of your choice to use interfaces and abstract classes?The concepts of interfaces and abstract classes are different. An interface is an abstraction of an action, and an

implemented, whereas an abstract class can implement a partial method.4th. The basic data type in the interface is static and the suction class is not.When you focus on the nature of a thing, use an abstract class, and when you focus on an operation, use an interface.Abstra

different.Interface:Using interfaces (interface), you can specify which methods a class must implement, but you do not need to define the specifics of these methods.Interfaces are defined by the interface keyword, just like defining a standard class, but all of the methods defined in it are empty.All methods defined in the interface must be public, which is the attribute of the interface.To implement an in

). Multiple inheritance of interface In the inheritance of Java classes, a derived class can have only one base class. In other words, a class cannot inherit more than one class at a time. In Java, interface can inherit more th

What is the difference between an interface and an abstract class?What is the basis for using interfaces and abstract classes?The concepts of interfaces and abstract classes are different. The interface is the abstraction of actions, and the

Abstract class: Declares the existence of a method without implementing a specific method. An instance of the abstract class cannot be created. However, you can create a variable whose type is an abstract class that points to an i

Same point:1. Both are located at the top of the inheritance and are used for other implementations or inheritance.2. Neither can be instantiated.3. You can define an abstract method whose subclass/implementation class must override these abstract methods.Different:1. The interface does not have a constructor method, and the