I'm new to using java and I need to make a class called Rectangle, but the code I'm using doesn't seem to work, and the notes for class aren't helpful. I feel like it has something to do with my methods because I don't understand those too well.
The class needs to follow these requirements: Create a class called rectangle with the following instance variables and public constructors:
width, double
height, double
a constructor with one parameter (double) called sideLength, which sets both the width and height to sideLength.
a constructor with two parameters width and height (double), which sets both the width and height to the corresponding values that are passed on.
a public method computeArea with no parameters that returns the area of Rectangle as a double
a public method computePerimeter with no parameters that returns the perimeter of Rectangle as a double
a public method getHeight with no parameters that returns the height of Rectangle as a double
a public method getWidth with no parameters that returns the width of Rectangle as a double
I don't need to make a main method because that was already provided.
This is the code that I'm using, but I keep getting an error that says height cannot be found from the computeArea method and down.
class Rectangle{
private static double width;
private static double heigth;
public Rectangle(double sideLength) {
Rectangle width = new Rectangle(sideLength);
Rectangle height = new Rectangle(sideLength);
}
public Rectangle(double width, double height){
width = width;
height = height;
}
public double computeArea() {
return height * width;
}
public double computePerimeter() {
return 2 * (height + width);
}
public double getHeight() {
return height;
}
public double getWidth() {
return width;
}
}
Don't make the private variables static or they will be shared by all instances of Rectangle.
class Rectangle{
private double width;
private double height;
public Rectangle(double sideLength) {
this.width = sideLength;
this.height = sideLength;
}
public Rectangle(double width, double height){
this.width = width;
this.height = height;
}
public double computeArea() {
return height * width;
}
public double computePerimeter() {
return 2 * (height + width);
}
public double getHeight() {
return height;
}
public double getWidth() {
return width;
}
}
To use it in other code:
public class Test {
public static void main(String[] args) {
Rectangle square = new Rectangle(1.0);
double area = square.computeArea();
System.out.println(area);
Rectangle rectangle = new Rectangle(1.0, 2.0);
area = rectangle.computeArea();
System.out.println(area);
}
}