Declare an abstract class vehicle with an abstract method name numwheels().provide the two subclasses two-wheeler and four wheeler , each one of which implements this method. Create instance of these two subclasses and demonstrate the use of numwheels() method.

import java.io.*;
public abstract class vehicle
{

    public abstract void numwheels();
}


public class TwoWheelers extends vehicle
{
    public void numwheels()
    {
        System.out.println("Vehicle Have Two Wheels.");
    }
}


public class FourWheelers extends vehicle
{

    public void numwheels()
    {
        System.out.println("Vehicle Have Four Wheels.");
    }
}

public class ass2
{
    public static void main( String args[])
    {
        TwoWheelers shine= new TwoWheelers();
        shine.numwheels();
        FourWheelers i10= new FourWheelers();
        i10.numwheels();
    }
}