Comment on Tutorial - Abstract classes in Java By Kamini



Comment Added by : Vikash K Agarwal

Comment Added at : 2011-11-02 12:02:50

Comment on Tutorial : Abstract classes in Java By Kamini
Here i posted a good example with spring. Here really implementation of OOPS.
public abstract class Shape {
public abstract double getArea();
public void printInfo()
{
System.out.printf("%s with area of %,.2f%n",getClass().getSimpleName(), getArea());
}



public class Circle extends Shape {

private double radius;

public double getRadius() {
return radius;
}

public void setRadius(double radius) {
this.radius = radius;
}

@Override
public double getArea() {
return Math.PI*getRadius()*getRadius();
}
public Circle(double radius)
{
setRadius(radius);
}

}


public class Rectangle extends Shape {

private double length,width;

public double getLength() {
return length;
}

public void setLength(double length) {
this.length = length;
}

public double getWidth() {
return width;
}

public void setWidth(double width) {
this.width = width;
}

@Override
public double getArea() {
return getLength()*getWidth();
}
public Rectangle(double length,double width)
{
setLength(length);
setWidth(width);
}
public Rectangle(){}

}


import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;


public class ShapeTest {

/**
* @param args
*/
public static void main(String[] args) {
ApplicationContext applicationContext=new ClassPathXmlApplicationContext("spring.xml");
Shape shape=(Shape)applicationContext.getBean("Rectangle");
shape.printInfo();

Rectangle rect=(Rectangle)shape;
rect.setLength(15.0);
rect.setWidth(10.0);


Shape shape2=(Shape)applicationContext.getBean("Rectangle");
shape2.printInfo();

Shape shape1=(Shape)applicationContext.getBean("Circle");
shape1.printInfo();
}

}


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Archived Comments

1. Its self-explaining and fullfilling example.
View Tutorial          By: vijay at 2010-03-29 02:36:41

2. If i jus wanna read the files in the phone , how s
View Tutorial          By: vt at 2010-01-28 02:50:26

3. please correct things....and plz dont misguide
View Tutorial          By: amit verma at 2015-02-19 08:44:55

4. Hi!
I would like to send a string from a j2

View Tutorial          By: beetlebrain at 2010-03-26 06:02:00

5. sir ji,
i want do learn for loop in java an

View Tutorial          By: Prabhakar at 2009-11-06 00:48:53

6. Thanx!!!!....
It helped me to startup with

View Tutorial          By: RAJITHA REDDY at 2011-03-01 02:47:03

7. Been hearing about this for quite long. This gives
View Tutorial          By: Lolip at 2011-08-24 08:40:20

8. Thank you sir this is a nice example/
View Tutorial          By: Techbymak at 2013-01-08 09:51:54

9. Thanks a lot for this very fruitful and amazingly
View Tutorial          By: Gaurav Saxna at 2011-06-15 06:20:18

10. Sir , I am doing B.Tech . I want to know more abou
View Tutorial          By: amita saini at 2011-08-05 13:07:35