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. Explanation is very good. Thanks all.
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2. I need code for read write mifare 1k card using No
View Tutorial          By: amarendra at 2010-12-02 21:12:08

3. I want to use the same code in c++,
Can a

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4. Hi,

I am new to html, and javascrip

View Tutorial          By: Tom Theriault at 2010-12-14 14:54:09

5. Hello,

I've got javax.comm and fol

View Tutorial          By: Ashkan at 2009-12-19 21:51:19

6. thanks ..it was really helpful.
View Tutorial          By: jay at 2012-03-19 04:17:14

7. thanks for your code
could you send me the

View Tutorial          By: nocturne at 2009-01-09 01:57:05

8. me too got the same problem....
but m sure

View Tutorial          By: HEHE at 2008-11-19 01:49:04

9. Those who want the details of JAVA should search f
View Tutorial          By: Amit Singh at 2011-11-13 11:42:42

10. I used code when command button clik , it wil show
View Tutorial          By: sekh umar at 2011-06-23 01:40:21