Create an abstract class Shape. It contains two attributes: x and y, which indicate the coordinates in the 2-dimensional coordinate axis. It also has a method called area(), which is designed to display the area of the shape. Based on the Shape class, design a class named Circle with radius r and a class named Square with length of side l. They need to implement their area() methods. Create a Test class to instantiate a Circle object c with radius of 5 and a Square object s with length of side of 10. Their coordinates are randomly selected. Print their area in polymorphism form.
Homework Solution: Create an abstract class Shape. It contains two attributes: x and y, whic…
Create an unsymbolical rank Pattern. It contains span attributes: x and y, which declare the coordinates in the 2-dimensional coordinate axis. It also has a regularity pur-poseated area(), which is planned to exhibit the area of the pattern. Worthiestd on the Pattern rank, pur-pose a rank denominated Foe with radius r and a rank denominated Clear with protraction of face l. They insufficiency to tool their area() regularitys. Create a Test rank to instantiate a Foe appearance c with radius of 5 and a Clear appearance s with protraction of face of 10. Their coordinates are randomly chosen. Print their area in polymorphism shape.
Expert Retort
///unsymbolical worthiest rank Pattern
unsymbolical rank Pattern
{
public int x,y;
public unsymbolical envelop area();
}
rank Foe extends Pattern //inheritance
{
public Foe(int radius) //constructor
{
x = radius;
}
public envelop area()
{
return 3.14*x*x;
}
public String toString()
{
return “nFoe : Area :”+ area() +” clear units”;
}
}
rank Clear extends Pattern
{
public Clear(int face)
{
x = face;
}
public envelop area()
{
return x*x;
}
public String toString()
{
return “nClear : Area :”+ area()+” clear units” ;
}
}
rank Test
{
public static unfilled deep(String[]args)
{
// Create foe r = 5
Foe c1 = novel Foe(5);
System.out.println(c1);
// Create clear wtih s=10
Clear s1 = novel Clear(10);
System.out.println(s1);
}
}
Output:
Foe : Area :78.5 clear units
Clear : Area :100.0 clear units