![]() A class that implements an interface must implement all the methods declared in the interface. It provides total abstraction means all the methods in an interface are declared with the empty body, and all the fields are public, static and final by default. It can be used to achieve loose coupling.Īn interface is declared by using the interface keyword.By interface, we can support the functionality of multiple inheritance.There are mainly three reasons to use interface. Since Java 9, we can have private methods in an interface. Since Java 8, we can have default and static methods in an interface. Eingeführt Juni 2018 Kategorie Mittelklasse OS Android 8 (Oreo) Body Aluminium Display 5.6' - 720 x 1480 Hauptkamera 16 Megapixel Video 1920 x 1080 Pixel Maße 149.9x70.8x7.7mm³ Gewicht 162g UVP 339. It cannot be instantiated just like the abstract class. Galaxy A6 vs Galaxy A7 (2018) Zunächst die wesentlichen Daten und Unterschiede im Überblick: Galaxy A6. Java Interface also represents the IS-A relationship. In other words, you can say that interfaces can have abstract methods and variables. It is used to achieve abstraction and multiple inheritance in Java. There can be only abstract methods in the Java interface, not method body. The interface in Java is a mechanism to achieve abstraction. It has static constants and abstract methods. Why multiple inheritance is supported in Interface while it is not supported in case of class.Īn interface in Java is a blueprint of a class.
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