Case Classes

Case Classes

Case classes are immutable data containers with built-in equals, hashCode, and toString:

case class Point(x: Int, y: Int)

val p = Point(3, 4)
println(p.x)  // 3
println(p.y)  // 4

Methods on Case Classes

case class Circle(radius: Double) {
  def area: Double = 3.14159 * radius * radius
  def circumference: Double = 2 * 3.14159 * radius
}

val c = Circle(5.0)
println(c.area)

Your Task

Define a case class Rectangle(width: Int, height: Int) with two methods:

• area: Int — returns width * height
• perimeter: Int — returns 2 * (width + height)