JAVA What is the public interface of a class How does it dif

((JAVA))

What is the public interface of a class? How does it differ from the implementation of a class?

Solution

Public interface:

The public interface of a class are its public properties such as variables or fields you can read the values of or assign to and methods.

Here create something that is not a subclass of LinkedList. Constructing a subclass would give you access to protected methods.

\"Public interface of linked list class\" means only public methods of the LinkedList class.

Difference in Interface and Implementation :

Implementation is somewhat equal to Abstract class, Abstract class can have abstract and non-abstractmethods. Interface can have only abstract methods.

Abstract class doesn\'t support multiple inheritance. Interface supports multiple inheritance.

Abstract class can have final, non-final, static and non-static variables. Interface has only static and final variables.

Example for abstract class:

public abstract class Shape{

public abstract void draw();

}

Example for interface class:

public interface Drawable{

void draw();

}