Dokumentasi Pertemuan Kedua PBO Kelas B

Latihan kedua membuat hasil perhitungan object 2d dalam Bahasa Java dengan BlueJ

Hasil :

 

Class :

Sourcecode:

Main

 /** Ini Main */  
 class MainCIr  
 {  
   public static void main(String args[])  
   {  
     Circle aCircle;   // Ref  
     aCircle = new Circle();  // New Circle  
     aCircle.x = 20.0;   // Inputting Data  
     aCircle.y = 10.0;  
     aCircle.r = 5.0;  
     double area = aCircle.area();  
     double circumference = aCircle.circumf();  
     System.out.println("Radius ="+aCircle.r+" Area ="+area);  
     System.out.println("Radius ="+aCircle.r+" Circumference ="+circumference);   
   }  
 }  

Circle

 /**  
 Ini Lingkaran  
  */  
 public class Circle  
 {  
  public double x,y;  //declare coordinate  
  public double r;   //declare radius  
  public double circumf()  
   { return 2*3.14*r;} //show cirmcumference  
  public double area() // show area  
   { return 3.14*r*r; }  
 }