Java for Fucking Idiots: Learn the Basics of Java Programming Without any experience!

package
com.amazon.app.productlist;
import
com.amazon.app.shared.networking.Networker;
Now, for the rest of the class you can create new Networkers! Go crazy!
Connect to every web site that has ever existed! WEoooohhhhhh!
Ahem.
So yeah, that’s how you would import classes from the rest of your project.
But this same rule applies to using classes from Java.
Just for shits and giggles, suppose I want to generate a random number.
Rather than write my own class or function to do this, I can use the
Random class from the Java standard library.
But I can’t just create a new 
Random(),
just like that! I have to import it. At
the top of my file…
import
java.util.Random;

---

Then in one of my functions, I’m good to go!
Random randomNumberGenerator =
new
Random();
int
randomInt = randomNumberGenerator.nextInt();
Hells yea!
I have the memory of a goldfish
So I need to remember the full package name for every class I want to use?
NOPE! You literally just need to know the name of the class, start typing it
in your code, then use your super duper IDE like IntelliJ (promo code
Steve) to automatically import the class you need.
Import class. Adds the import to the top of your class. Boom, done.
Importing it all
See above how we imported the Random class? We could import every
single class inside the java.util package using an astric *.
import
java.util.*;
Yep. Now this class could use any class inside the java.util package.
There’s pretty much no reason to do this thanks to the goldfish-proof ways
of managing your imports that IntelliJ and other software provides. But it’s
certainly possible to import like this.
The exception to the rule?
There’s a class we’ve been using a lot throughout this book that we’ve
never had to import.
Can you think of what it is?

---

It rhymes with “I can’t remember a goddamn thing.”
and with “Ding ding ding!”
That’s right, it’s a String !! Why haven’t we had to import Strings?
I just said a bit ago that if a class isn’t inside your package, you need to
import it before you can use it. And we know that a String is a class,
because we went over its most important methods. What gives? Am I a liar?
Java pulled a little sneaky on us. They quietly import one special package
into every Java file. That package’s name?
Albert Einstein.
No, it’s java.lang ;
Strings belong to the java.lang package. That means you don’t need to
import it.