labprogs/Abstract.java at main · mathewspmathew/labprogs · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45

public class Abstract1 {

	public static void main(String[] args) {
		 Shape sh;

         sh = new Rectangle();
         sh.numberofsides();

         sh = new Triangle();
         sh.numberofsides();

         sh=new Hexagon();
         sh.numberofsides();
	}
}

abstract class Shape{

    abstract void numberofsides();
}

class Rectangle extends Shape{

	@Override
	void numberofsides() {
		System.out.println("Number of sides of Rectangle is : 4");
	}
}

class Triangle extends Shape{

	@Override
	void numberofsides() {
		System.out.println("Number of sides of Triangle is : 3");
	}
}

class Hexagon extends Shape{

	@Override
	void numberofsides() {
		System.out.println("Number of sides of Hexagon is : 6");
	}
}