Answer to Question #8544 in Java | JSP | JSF for sonya

Question #8544
// Qs. Write java program that contains the following 2 classes. (i) Circle class that contains a radius field and getArea method that calculates its area.Give it a constructor where u pass in the radius. (ii) TestCircle class which creates an array of 100 circles, each with a a random radius and prints out the sum of the areas , the biggest & smallest areas class Circle { private float radius; public Circle(float r) { this.radius=r; } public float getArea() { return (float)(Math.PI*radius*radius); } } class circle7 { public static void main(String[] args) { Circle circles[]= new Circle[100]; for(int i=0; i<circles.length; i++) { circles[i]= new Circle((float)(50*Math.random())); showAreas(circles); System.out.println("the sum is"+ areaSum(circles)); System.out.println("the minimum is"+ minArea(circles)); System.out.println("the maximum is"+ maxArea(circles)); } public static float areaSum(Circle c[]) { float sum= 0; for(int i=0; i<c.length; i++) { sum+= c[i].getArea(); } return sum; } public static float minArea(Circle c[]) { float min= c[0].getArea(); for(int i=1; i<c.length; i++) { if(c[i].getgetArea()<min) min= c[i].getArea(); } return min; } public static float maxArea(Circle c[]) { float max= c[0].getArea(); for(int i=1; i<c.length; i++) { if(c[i].getgetArea()>max) max= c[i].getArea(); } return max; } public static void showAreas(Circle c[]) { for(int i=0; i<c.length; i++) { System.out.println(c[i].getArea()); } } } // Can someone plz find the errors in the program? Cuz the compiler is giving 8 errors.
Expert's answer
package testcircle;
/**
*
* @author admin
*/
public class Circle {
private double radius;
public Circle(double r){
this.radius = r;
}
public Circle(){
}
public double getRadius() {
return radius;
}
public void setRadius(double radius) {
this.radius = radius;
}
public double gerArea(){
return Math.PI*Math.pow(radius, 2);
}
}
import java.util.Random;
/**
*
* @author admin
*/
public class TestCircle {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Random rand = new Random();
double big = 0;
double small = 100000;
double sum = 0;
for(int i=0; i<100; i++){
Circle circle = new Circle(rand.nextDouble()*10);
if(small>=circle.gerArea())
small = circle.gerArea();
if(big<circle.gerArea())
big = circle.gerArea();
sum += circle.gerArea();
System.out.println((i+1)+ ": area = "+circle.gerArea());
}
System.out.println("Smallest area: "+small);
System.out.println("Biggest area: "+big);
System.out.println("Sum of areas: "+sum);
}
}

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