Implementation Class Java

In Java, the implements keyword is used to make a class adheres to contract defined by an interface. The implemented class must provide concrete implementation for the methods defined by the interface. In that case, the first non-abstract class must implement the method. For example class Crocodile extends Reptile void eat eats

In java, an interface is implemented by a class. The class that implements an interface must provide code for all the methods defined in the interface, otherwise, it must be defined as an abstract class. The class uses a keyword implements to implement an interface. A class can implement any number of interfaces.

In Java, interfaces don't need to explicitly declare a method as abstract or public. The classes that implement the interface MediaPlayer will define these methods public interface MediaPlayer void play void pause The AudioMediaPlayer class implements MediaPlayer, and it'll define the play and pause methods for audio media

In Java, the extends keyword is used for extending a class or interface and the implements keyword is used for implementing the interfaces into a class. It is the main difference between extends and implements.. Note that extends and implements are reserved keywords in Java and cannot be used as identifiers.. 1. Java extends. In Java, we can inherit the fields and methods of a class by

The implements keyword in Java is used to indicate that a class is going to implement an interface. By using implements, a class agrees to provide concrete implementations for all the abstract methods declared in the interface.. Usage. The implements keyword is used in a class declaration to specify one or more interfaces that the class will implement.

You should look into Java's interfaces. A quick Google search revealed this page, which looks pretty good.. I like to think of an interface as a quotpromisequot of sorts Any class that implements it has certain behavior that can be expected of it, and therefore you can put an instance of an implementing class into an interface-type reference.. A simple example is the java.lang.Comparable interface.

To declare a class that implements an interface, you include an implements clause in the class declaration. Your class can implement more than one interface, so the implements keyword is followed by a comma-separated list of the interfaces implemented by the class. By convention, the implements clause follows the extends clause, if there is one.. A Sample Interface, Relatable

Note A class can extend a class and can implement any number of interfaces simultaneously. quotimplementsquot Keyword in Java. In Java, the implements keyword is used to implement an interface.An interface is a special type of class which implements a complete abstraction and only contains abstract methods.To access the interface methods, the interface must be quotimplementedquot by another class with

Example. An interface is an abstract quotclassquot that is used to group related methods with quotemptyquot bodies. To access the interface methods, the interface must be quotimplementedquot kinda like inherited by another class with the implements keyword instead of extends.The body of the interface method is provided by the quotimplementquot class

It's useful to contrast interface implementation against extending abstract classes in Java Abstract classes can contain both concrete and abstract methods to inherit. Interfaces have only abstract methods. Classes can extend only one abstract class, but implement many interfaces. Abstract classes are best when you want to share common code