Guys who can explain more about abstraction?

Answer 1

An abstract class in simple words is a class that has one abstract method or more without implementation. The abstract method should be implemented by the subclasses
ex:

abstract class Food{
public static final int FRUIT=1;
public static final int VEG=2;

public abstract int getType();

public void eat(){
System.out.println("eating...yummy");
}
}

class Fruit extends Food {
public int getType(){
return Food.FRUIT;
}
}

public class Program
{
public static void main(String[] args) {

Fruit f = new Fruit();

f.eat();

if(f.getType() == Food.VEG){
System.out.print("Vegetable");
}else{
System.out.print("Fruit");
}

}
}

Answer 2

abstract class in simple word contain method without body define in super class and method declared in subclass