Java/AbstractClass at main · Merin2005/Java · GitHub

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package javalab;
abstract class Shape
{
	abstract void numberOfsides();
}
class Rectangle extends Shape
{
	int side;
    Rectangle(int side)
	{
		this.side=side;
	}
	void numberOfsides()
	{
		System.out.println("I am Rectangle,Number of sides="+side);
	}
}
class Triangle extends Shape
{
	int side;
	Triangle(int side)
	{
		this.side=side;
	}
	void numberOfsides()
	{
		System.out.println("I am Triangle,Number of sides="+side);
	}
}
class Hexagonal extends Shape
{
	int side;
	Hexagonal(int side)
	{
		this.side=side;
	}
	void numberOfsides()
	{
		System.out.println("I am Hexagon,Number of sides="+side);
	}
}
public class AbstractClass
{
	public static void main(String[] args)
	{
	   Rectangle r=new Rectangle(4);
	   Triangle t=new Triangle(3);
	   Hexagonal h=new Hexagonal(6);
	   r.numberOfsides();
	   t.numberOfsides();
	   h.numberOfsides();
	}
}