Operators

Operators are functions that act upon elements to create new elements. There are 5 types of operator groups in Java.

• Arithmetic

• Assignment

• Bitwise

• Comparison

• Logical

Arithmetic

Arithmetic operators are common mathematical operators.

Arithmetic Operators

Operator	Meaning	Example	Result
+	Addition	10 + 5	15
-	Subtraction	50 - 8	42
*	Multiplication	4 * 6	24
/	Division	2.0 / 1.0	1.0
++	Increment by 1	z++	z + 1
–	Decrement by 1	z–	z - 1
%	Modulo	5 % 2	1

Assignment

Assignment operators are used to store values in defined variables.

Assignment Operators

Operator	Meaning	Example	Example expanded
=	Assign	x = 10	x = 10
*=	Multiply the current value by	x *= 5	x = x * 5
/=	Divide the current value by	x /= 5	x = x / 5
%=	Mudulo the current value by	x %= 5	x = x % 5
+=	Add to the current value by	x += 5	x = x + 5
-=	Subtract the current value by	x -= 5	x = x - 5
<<=	Shift the current value left by	x <<= 8	x = x << 8
>>=	Shift the current value right by	x >>= 8	x = x >> 8
&=	Bitwise AND the current value by	x &= 0xFF	x = x & 0xFF
^=	Bitwise XOR the current value by	x ^= 0xFF	x = x ^ 0xFF
|=	Bitwise OR the current value by	x |= 0xFF	x = x | 0xFF

Bitwise

Bitwise operators manipulate the individual bits of numbers.

X = 10 and Y = 2

Bitwise Operators

Operator	Meaning	Example	Result
~	Unary NOT	~X	-11
&	AND	X & Y	2
|	OR	X | Y	10
^	XOR	X ^ Y	8
>>	Shift Right	X >> 1	5
<<	Shift Left	X << 1	20
>>>	Shift right zero fill	X >>> 1	5

Comparison

Comparison operators are used to compare two values.

X = 5 and Y = 2

Comparison Operators

Operator	Meaning	Example	Result
==	Equal to	X == Y	false
!=	Not Equal	X != Y	true
>	Greater than	X > Y	true
<	Less than	X < Y	false
>=	Greater than or equal to	X >= Y	true
<=	Less than or equal to	X <= Y	false

Logical

Logical operators determine logic betwen boolean statements.

X = 2

Logical Operators

Operator	Meaning	Example	Result
&&	AND	(X < 5) && (X < 10)	true
||	OR	(X < 5) || (X < 1)	true
!	NOT	!(X < 5)	false