Consider the following test code placed in the test class within the main() method. Your task is to Java class Box so that the expected output is produced.

Test	Result
int width = 50; int height = 18; int depth = 8; String builder = "Arthur "; Box a = new Box(width, height, depth); System.out.println(a.printMe()); Box b = new Box(width, height, depth, builder); System.out.println(b.printMe());	Box built. Width: 50 Height: 18 Depth: 8 Built by null Box built. Width: 50 Height: 18 Depth: 8 Built by Arthur