AP Computer Science Lesson Introductory Java Language Features (2)

Notes Intro Java Language Features - Operators 8/16

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####Arithmetic Operators:

"+"	Addition	-
"-"	Subtraction	-
"*"	Multiplication	-
"/"	Division	-
"%"	Mod (remainder)	Ex. 11 % 8 = 3

** Keep in mind, if you use int for 5/2... It will give you an integer! So, use double as its type.

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Relational Operators:

==	equal to	Ex. if (x == 100)
!=	not equal to	Ex. if (x != 100)
>	greater than
<	less than
>=	greater than or equal to
<=	less than or equal to

** Use these when you may need to use different operations to different types of numbers.

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Logical Operators:

** AND means both have to be true.
** OR means one has to be true.

Truth Tables

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Assignment Operators:

=	x = 2	-
+=	x += 4	this means x = x + 4
-=	x -= 4	this means x = x - 4
*=	x *= 4	this means x = x * 4
/=	x /= 4	this means x = x / 4
%=	x %= 4	this means x = x % 4

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Increment and Decrement Operators:

++	i++	means i = i + 1
--	i--	means i = i - 1

** Here is a mathematical example where we could use this:

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A mathematical program:

Output (what the user would see):
Solving 5+3*2-2^2:
7

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Question for the Students

Make a program with the output:
Hello World.
My name is ______.
My favorite movie is ______.

Answer:

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