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();
}

}


View Tutorial



Subscribe to Tutorials

Related Tutorials

Program using concept of byte long short and int in java

Update contents of a file within a jar file

Tomcat and httpd configured in port 8080 and 80

Java File

Java String

Count number of vowels, consonants and digits in a String in Java

Reverse a number in Java

Student marks calculation program in Java

Handling Fractions in Java

Calculate gross salary in Java

Calculate average sale of the week in Java

Vector in Java - Sample Program

MultiLevel Inheritance sample in Java

Multiple Inheritance sample in Java

Java program using Method Overriding

Archived Comments

1. i totally disagree with Gerardo Saldí[email protected] i
View Tutorial          By: Shivesh at 2009-09-24 23:46:42

2. I executed this program with the help of below cod
View Tutorial          By: leela at 2011-09-08 12:16:24

3. Good one. Clear basic concept
View Tutorial          By: Joshua at 2010-03-12 01:13:08

4. Thanks, Just what i was looking for.
View Tutorial          By: Baapu at 2009-10-21 15:21:43

5. excellent for a beginer in inet address ...
View Tutorial          By: Tony at 2009-08-13 22:39:48

6. HI,
I want to send an sms via website to mo

View Tutorial          By: Hemant at 2008-11-04 05:26:30

7. hi Emiley J.,
i am geting this error while

View Tutorial          By: jugal at 2009-02-20 02:14:23

8. good
View Tutorial          By: dock at 2013-06-07 15:18:49

9. Change the line from
imgView.setBackgroundR

View Tutorial          By: laki at 2012-05-02 08:59:25

10. Hi there, I fixed the above (non-working) example
View Tutorial          By: JavaBoy at 2011-09-24 05:41:19