BCS2233 OOP Class and Object

Power point slide untuk :-

Chapter 8 Objects and Classes

Chapter 11 Inheritance and Polymorphism

Chapter 13 Exception Handling

Latihan untuk menguji kefahaman pelajar tentang object dan constructor

Tuliskan output untuk program berikut :-

public class TestRec {

    

    public static void main(String[] args) {

   

    Rectangle s4 = new Rectangle();

    System.out.println(" Perimeter s4=" + s4.per());

    System.out.println("Area s4 =" +s4.area());

    

        Rectangle segi4 = new Rectangle(3,5);

    System.out.println(" Perimeter segi4=" + segi4.per());

    System.out.println("Area segi4 =" +segi4.area());

}

}

class Rectangle {

double length, width;

double per()

{

 return 2*(length+width); }

double area()

{

 return length*width; }

Rectangle()

{

 width =1;

 length =2; }

Rectangle(double newwidth, double newlength)

{

 width =newwidth;

 length =newlength; }

}