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Java Tutorial: Abstraction in Java
What is Abstraction?
- It is a concept of projecting important ideas
- What is basically needed to perform something is highlighted in abstraction
- It conceals the internal workings and projects its main functionality to the end user
- It is employed through the concepts called Abstract Classes and Interfaces
Abstract Class
- It is a classNamewhich holds an abstract keyword in front of the classNamename
- This classNamecontains abstract methods
- An abstract classNameneed not to be initialised
- A classNamewith abstract method is to be introduced with abstract class
- Always this classNameis to be inherited
- The abstract methods are to be employed in case of inheriting this class
- The method has only the method prototype not the definition in its abstract class
Syntax
public abstract classNamebas_class
{
abstract void shw();
}
public classNamederivd_class
{
abstract void shw()
{
}
}
Example
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