Tugas 2 PBO

Source Code Class Lingkaran (Circle)

 public class Circle  
 {  
   public double x, y; // centre of the cirlce  
   public double r; // radius of circle  
   //Methods to return circumference and area  
   public double circumference() {  
     return 2 * 3.14 * r;  
   }  
   public double area() {  
     return 3.14 * r * r;  
   }  
 }  

Source Code Class Bujursangkar (Square)

 public class Square  
 {  
   public double s;  
   //Methods to return circumference and area  
   public double circumference() {  
     return 4*s;  
   }  
   public double area() {  
     return s*s;  
   }  
 }  

Source Code Class Persegi Panjang (Rectangle)

 public class Rectangle  
 {  
   public double p;  
   public double l;  
   public double circumference() {  
     return 2*(p+l);  
   }  
   public double area () {  
     return p*l;  
   }  
 }  

Source Code Class Segitiga (Triangle)

 public class Triangle  
 {  
   public double a, b, c, d;  
   public double circumference() {  
     return a+b+c;  
   }  
   public double d() {  
     return circumference() / 2;  
   }  
   public double area() {  
     return Math.sqrt(d()*(d()-a)*(d()-b)*(d()-c));  
   }  
 }  

Source Code Class Belah Ketupat (Rhombus)

 public class Rhombus  
 {  
   public double d1, d2, s;  
   public double circumference() {  
     return 4*s;  
   }  
   public double area() {  
     return d1*d2*0.5;  
   }  
 }  

Source Code Class Jajar Genjang (Parallelogram)

 public class Parallelogram  
 {  
   public double a,t,h;   
   public double circumference()   
   {   
     return 2*(a+h);   
   }   
   public double area()   
   {   
     return a*t;   
   }   
 }  

Source Code Class MyMain

 public class MyMain  
 {  
   public static void main(String args[])  
   {  
     Circle aCircle; //creating reference  
     aCircle = new Circle(); //creating object  
     aCircle.x = 10; //assigning value to data field  
     aCircle.y = 20;  
     aCircle.r = 5;  
     double area = aCircle.area(); //involving method  
     double circumf = aCircle.circumference();  
     System.out.println("Lingkaran");  
     System.out.println("Radius="+aCircle.r+" Area="+area);  
     System.out.println("Radius="+aCircle.r+" Circumference="+circumf);  
     System.out.println();  
     Square aSquare; //creating reference  
     aSquare = new Square(); //creating object  
     aSquare.s = 10; //assigning value to data field  
     double Area = aSquare.area(); //involving method  
     double Circumf = aSquare.circumference();  
     System.out.println("Bujursangkar");  
     System.out.println("Sisi="+aSquare.s+" Area="+Area);  
     System.out.println("Sisi="+aSquare.s+" Circumference="+Circumf);  
     System.out.println();  
     Rectangle aRectangle; //creating reference  
     aRectangle = new Rectangle(); //creating object  
     aRectangle.p = 10; //assigning value to data field  
     aRectangle.l = 5;  
     double luas = aRectangle.area(); //involving method  
     double keliling = aRectangle.circumference();  
     System.out.println("Persegi Panjang");  
     System.out.println("Panjang="+aRectangle.p+" Lebar="+aRectangle.l+" Area="+luas);  
     System.out.println("Panjang="+aRectangle.p+" Lebar="+aRectangle.l+" Circumference="+keliling);  
     System.out.println();  
     Triangle aTriangle; //creating reference  
     aTriangle = new Triangle(); //creating object  
     aTriangle.a = 3; //assigning value to data field  
     aTriangle.b = 4;  
     aTriangle.c = 5;  
     double Luas = aTriangle.area(); //involving method  
     double Keliling = aTriangle.circumference();  
     System.out.println("Segitiga");  
     System.out.println("Sisi 1="+aTriangle.a+" Sisi 2="+aTriangle.b+" Sisi 3="+aTriangle.c+" Area="+Luas);  
     System.out.println("Sisi 1="+aTriangle.a+" Sisi 2="+aTriangle.b+" Sisi 3="+aTriangle.c+" Circumference="+Keliling);  
     System.out.println();  
     Rhombus aRhombus; //creating reference  
     aRhombus = new Rhombus(); //creating object  
     aRhombus.d1 = 16; //assigning value to data field  
     aRhombus.d2 = 12;  
     aRhombus.s = 10;  
     double areaa = aRhombus.area(); //involving method  
     double circum = aRhombus.circumference();  
     System.out.println("Belah Ketupat");  
     System.out.println("Daigonal 1="+aRhombus.d1+" Diagonal 2="+aRhombus.d2+" Sisi="+aRhombus.s+" Area="+areaa);  
     System.out.println("Daigonal 1="+aRhombus.d1+" Diagonal 2="+aRhombus.d2+" Sisi="+aRhombus.s+" Circumference="+circum);  
     System.out.println();  
     Parallelogram aParallelogram; //creating reference  
     aParallelogram = new Parallelogram(); //creating object  
     aParallelogram.a = 20; //assigning value to data field  
     aParallelogram.h = 15;  
     aParallelogram.t = 12;  
     double areaaa = aParallelogram.area(); //involving method  
     double circumm = aParallelogram.circumference();  
     System.out.println("Jajar Genjang");  
     System.out.println("Alas="+aParallelogram.a+" Sisi Miring="+aParallelogram.h+" Tinggi="+aParallelogram.t+" Area="+areaaa);  
     System.out.println("Alas="+aParallelogram.a+" Sisi Miring="+aParallelogram.h+" Tinggi="+aParallelogram.t+" Circumference="+circumm);  
   }   
 }  

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