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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone {
  9.  
  10. public static void main(String[] args) throws Exception {
  11. Circle circle = new Circle(1);
  12.  
  13. System.out.printf("The circle's area is %.2f \n", circle.getArea() );
  14. System.out.printf("The circle's diameter is %.2f \n", circle.getDiameter());
  15. System.out.printf("The circle's circumference is %.2f \n", circle.getCircumference());
  16.  
  17. System.out.println("-----------");
  18.  
  19. System.out.printf("The circle's %-13s is %.2f\n", "area", circle.getArea());
  20. System.out.printf("The circle's %-13s is %.2f\n", "diameter", circle.getDiameter());
  21. System.out.printf("The circle's %-13s is %.2f\n", "circumference", circle.getCircumference());
  22.  
  23. System.out.println("-----------");
  24.  
  25. System.out.printf("%-26s is %.2f\n","The circle's area", circle.getArea());
  26. System.out.printf("%-26s is %.2f\n","The circle's diameter", circle.getDiameter());
  27. System.out.printf("%-26s is %.2f\n","The circle's circumference", circle.getCircumference());
  28. }
  29.  
  30. }
  31.  
  32. class Circle{
  33. private double r;
  34. public double getArea(){
  35. return Math.PI*r*r;
  36. }
  37. public double getDiameter(){
  38. return 2*r;
  39. }
  40. public double getCircumference(){
  41. return 2*Math.PI*r;
  42. }
  43. public Circle(double r) {
  44. this.r = r;
  45. }
  46.  
  47. }
Success #stdin #stdout 0.1s 320256KB
stdin
Standard input is empty
stdout
The circle's area          is 3.14 
The circle's diameter      is 2.00 
The circle's circumference is 6.28 
-----------
The circle's area          is 3.14
The circle's diameter      is 2.00
The circle's circumference is 6.28
-----------
The circle's area          is 3.14
The circle's diameter      is 2.00
The circle's circumference is 6.28