3.9 Can you use other people's code? How to import packages into your program?

A. Introduction:

It's nearly impossible to write everything on your own. For some standard functionality such as reading a file, you can use code from a standard library. To use code that are created for you, you need to "import" packages into your own program.

B. Watch how... (Slides)

C. Now, do you know when you need to import the following packages?

1. java.util.*

2. java.Math.*

3. java.lang.*

D. See if you can get 100% on this Kahoot!