Tuesday 27 September 2011

SIMPLE CLASS DESIGN IN JAVA


Exno:                                                   SIMPLE CLASS DESIGN IN JAVA

Aim:
            To write a java program to calculate the area of rectangle and circle.
Algorithm:
Step1: Start.
Step2: create a class areawhich includes the parameter for rectangle and circle.
Step3: Define area of rectangle and circle within the class.
Step4: create a method (void main()) and pass objects as parameters to the methods.
Step5: Display the area of rectangle and circle in void main().
Step6: Stop.
Program:
class area
{
float length;
float breadth;
double s;
void getrectdata(float a,float b)
{
length=a;
breadth=b;
}
void getsqrdata(float c)
{
s=c;
}
float rectarea(area rec)
{
return(rec.length*rec.breadth);
}
double sqrarea(area csq)
{
return(sq.radius*sq.radius);
}
}
class ex3
{
public static void main(String args[])
{
area ar=new area();
float a;
double b;
ar.getrectdata(1,2);
ar.getsqrdata(4);
a=ar.rectarea(ar);
b=ar.sqrarea(ar);
System.out.println("\nArea of Rectangle="+a);
System.out.println("\nArea of Square="+b);
}
}

OUTPUT:

Z:\anitha>javac ex3.java
Z:\anitha>java ex3
Area of Rectangle=2.0
Area of Square=16.0

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