Pretty printing with toString()

- [Instructor] Here, I have two classes. … On the left, I have the Pond class, … and on the right, I have a duck class. … In the Pond class, I have instantiated two Duck objects … called mobyDuck, and wolfgangDuck. … Duck has two methods, waddle and quack, … and here I'm using the waddle method on mobyDuck. … When I run this code, I should see waddle, … but most of the time when you use classes, … you're interested in the instance data that's within them. … So, let's say I want to know the name … of the duck that's waddling. … I can use the instance variable name, … and then I'm going to change that to is waddling. … Moby is waddling. … So now, as you probably expect, … if I get Wolfgang to waddle, … it's going to say "Wolfgang is waddling". … And that's because we've used the instance variable name … that is different for each instance of Duck. … There's a thing that I sometimes like to do, … which is print ducks. … Let's see what happens. … Okay, so what I see here is Duck, … but it doesn't have any of the information …