As discussed in Unit 6, "Basic Classes," if you do not explicitly declare a constructor for your class, a default constructor is created that takes no parameters and does nothing. You are free to make your own default constructor, however, that takes no arguments but that "sets up" your object as required.

The constructor provided for you is called the "default" constructor, but by convention so is any constructor that takes no parameters. This can be a bit confusing, but it is usually clear from context which is meant.

Take note that if you make any constructors at all, the default constructor is not made by the compiler. So if you want a constructor that takes no parameters and you’ve created any other constructors, you must make the default constructor yourself!