“Java zdefiniuj interfejs” Kod odpowiedzi

Interfejs w Javie

An interface is a special kind of class that cannot be instantiated.
 The main idea of an interface is declaring functionality. Interfaces help to 
 abstract from specific classes and emphasize the functionality. 
It makes software design more reusable and clean
Opposite to a class, an interface can extend several interfaces. 
A class can implement multiple interfaces.
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Interfejs w Javie

the main idea of an interface is declaring functionality.
Suppose you program a game that has several types of characters.
These characters are able to move within a map. That is represented by Movable
interface
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Java zdefiniuj interfejs

/* File name : Animal.java */
interface Animal {
   public void eat();
   public void travel();
}
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