Create 26.1 Class Circle and its component.java

Author: prokrishpatel

26.1 Class Circle and its component.java

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+/*
+Create a java program:
+class Name: Circle
+Instance Variable: radus (double type)
+Instance Method:
+1. area()
+2. circumfrence() 3. perimeter()
+
+Write a separate class TestCircle with a main() method and test the Circle class methods.create a circle objects and assign it to reference variables obj
+
+Input Format
+
+radius of circile
+
+Constraints
+
+radius>0
+
+Output Format
+
+prints the result of Area,circumfrence and perimeter of circle.
+
+Sample Input 0
+
+2
+Sample Output 0
+
+Area of circle:12.566370614359172
+Perimeter of circle:12.566370614359172
+Circumference of circle:12.566370614359172
+*/
+import java.io.*;
+import java.util.*;
+class Circle
+{
+    double radius;
+    Circle(double r)
+        {radius = r;}
+    void area()
+    {
+        System.out.println("Area of circle:"+3.141592653589793*radius*radius);
+    }
+    void circumfrence()
+    {
+        System.out.println("Circumference of circle:"+3.141592653589793*2*radius);
+    }
+    void parimeter()
+    {
+        System.out.println("Perimeter of circle:"+3.141592653589793*2*radius);
+    }
+}
+public class Solution {
+
+    public static void main(String[] args) {
+        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
+        Scanner sc =new Scanner(System.in);
+        double r = sc.nextDouble();
+        if(r>0)
+        {
+            Circle c = new Circle(r);
+            c.area();
+            c.parimeter();
+            c.circumfrence();
+            
+        }
+        else
+            System.out.print("invalid input");
+    }
+}