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

int
x =
2
+
2
;
…x becomes 4
int
y =
4
*
9
;
…x becomes 36
But what happens where we start combining our operators? How do we
know which ones are more important and go first? Do we multiply, then
add, then subtract? If only there was some sort of pneumatic device to
remember…
Well, guess what?
PEMDAS
 is back!!
Order of operations
An operation is one little chunk of math shit. Your waiter probably waits on
tables (each one an operation) in a certain order, by the time in you arrived,
how much they like you, how much they expect you to tip, where you’re
located in the restaurant, etc.
Math has its own order of operations: PEMDAS.
P arentheses () -> E xponents
3
-> M ultiplication & D ivision */ -> A
ddition & S ubtraction +-
There is good news! You’re beautiful.
No, but there are no exponents in Java. You literally just need to remember
that stuff in parentheses happens first, followed by multiplying/dividing
things, followed by adding/subtracting.
And if there’s no combination between those categories you just go left to
right.
Trust me, it’s super easy.

---

Into the examples, here we go!
Example one!
int
x =
5
+
3
-
7
;
x is 1.
Why? No need to worry about the PEMDAS rules, it’s just
addition/subtraction.
5
+ 
3
is 
8
. And if we subtract 
7
from that, we get 
1
.
Example two!
int
y =
5
-
7
*
6
;
x is -37.
Why? The multiplication must happen first, because PEMDAS says so.
7
* 
6
is 
42
. And if we subtract from 42 from 5, we get -37.