JavaLab/abstract.java at master · ankgitk/JavaLab · GitHub

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abstract class Figure
{
	double dim1,dim2;
	Figure(double dim1,double dim2)
	{

	this.dim1=dim1;
	this.dim2=dim2 ;

	}

	abstract void Area();


}

class Rectangle extends Figure
{


	Rectangle(double dim1,double dim2)
	{

		super(dim1,dim2);

	}

	void Area()
	{


	System.out.println("Area  of rectangle :"+(dim1*dim2));

	}

}

class Triangle extends Figure
{
	Triangle(double dim1,double dim2)

	{

		super(dim1,dim2);


	}

	void Area()
	{

		System.out.println("Area of triangle : "+((0.5)*(dim1*dim2)));

	}

}

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

			Figure f;
			Rectangle r = new Rectangle(3,2);
			r.Area();
			Triangle t = new Triangle(5,3);
			t.Area();
			//f= r;
			//f.Area() ;
			//f=t;
			//f.Area() ;
		}


}