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Practicals

Java Theory

Abstraction:

Abstraction means hiding lower-level details and exposing only the essential and relevant details to the users.

Syntax
abstract return_type method_name ();

Example:

Consider an ATM Machine; All are performing operations on the ATM machine like cash withdrawal, money transfer, retrieve mini-statement…etc. But we can't know internal details about the ATM.

Diagram:

Real-Life-Example-of-Abstraction
Example
public class Main
{
public static void main(String args[])
{
TwoWheeler test = new Honda();
test.run();
 }
 }
abstract class TwoWheeler
{
public abstract void run();
 }
class Honda extends TwoWheeler
{
public void run()
{
System.out.println("Running..");
 }
 }