Abstraction in JAVA

• Abstraction is the process of hiding internal implementation details and showing only essential Functionality.
• Showing only necessary and hiding unwanted
• If any single method in class is abstract then the whole class is known to be a abstract class
• Object cannot be created in abstract class

=> Abstraction can be classified into two types

• Abstract Class
• Interface

1.Abstract Class

• It cannot be instantiated
• contains abstract methods
• Abstract class is declared using the "abstract" keyword
• Abstract class can contain both abstract and non-abstract methods 1.

public abstract class Netflix
{
public abstract void watchfifa();
public void dark(){
System.out.println("Crime Thriller-Dark");
}
public void peakyblinder()
{
System.out.println("Early 20's Gangster film ");
}
}

2.

public class OTT extends Netflix
{
public static void main(String[]args)
{
OTT ott=new OTT();
ott.peakyblinder();
ott.dark();
ott.watchfifa();
}
public void watchfifa(){
System.out.println("Spain won world cup");
}
}

OUTPUT: