Quiz 7
Name: Panther ID:
Please use 10 minutes to finish this quiz.
1. [10 pts] Design and implement a class called Rectangle that contains instance data
representing the rectangle’s length and width. Define the rectangle constructor to accept
and initialize the length and width, and include getter and setter methods for the length
and width. Include methods that calculate and return the area and circumference of the
rectangle. Include a toString method that returns a one-line description of the rectangle.
Please also write a driver class called RectangleTest to test the class you have created.
Note: area = length * width circumference = 2 * (length + width)
// File: Rectangle.java
public class Rectangle {
//Data Declaration
private double width, length;
//Constructor
public Rectangle (double w, double l){
width = w;
length = l;
}
//Accessor
public double getWidth(){
return width;
}
public double getLength(){
return length;
}
//Mutator
public void setWidth(double w){
width = w;
}
public void setLength(double l){
length = l;
}
//Service methods: calcArea and calcCircumference
public double calcArea(){
return width*length;
}
public double calcCircumference(){
return 2*(width + length);
}
//toString
public String toString(){
return(“Rectangle:\n\tWidth - ” + width + “\n\tLength - ” + length);
}
}
//File RectangeTest.java
import java.util.Scanner;
public class RectangleTest{
public static void main(String []args){
Scanner scan = new Scanner(System.in);
double width, length;
System.out.println(“Enter Rectangle width: ”);
width = scan.nextDouble();
System.out.println(“Enter Rectangle length: ”);
length = scan.nextDouble();
Rectangle rec = new Rectangle(width, length);
System.out.println(“width: ” + rec.getWidth() + “ Length: ” +
rec.getLength());
System.out.println(“Enter new Width: ”);
