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The following table lists the basic arithmetic operators provided by the Java programming language. These operators can be used only on numeric values.
Operator Use Description +
op1 + op2
Adds op1
andop2
-
op1 - op2
Subtracts op2
fromop1
*
op1 * op2
Multiplies op1
byop2
/
op1 / op2
Divides op1
byop2
%
op1 % op2
Computes the remainder of dividing op1
byop2
These short cut operators increment or decrement a number by one.
Operator Use Description ++
op++
Increments op
by 1; evaluates to the value of op before it was incremented++
++op
Increments op
by 1; evaluates to the value of op after it was incremented--
op--
Decrements op
by 1; evaluates to the value of op before it was decremented--
--op
Decrements op
by 1; evaluates to the value of op after it was decrementedHere are the Java programming language's other arithmetic operators.
Operator Use Description +
+op
Promotes op
toint
if it's abyte
,short
, orchar
-
-op
Arithmetically negates op
Use these relational operators to determine the relationship between two values.
Operator Use Returns true
if>
op1 > op2
op1
is greater thanop2
>=
op1 >= op2
op1
is greater than or equal toop2
<
op1 < op2
op1
is less thanop2
<=
op1 <= op2
op1
is less than or equal toop2
==
op1 == op2
op1
andop2
are equal!=
op1 != op2
op1
andop2
are not equalYou can use the following conditional operators to form multi-part decisions.
Operator Use Returns true
if&&
op1 && op2
op1
andop2
are bothtrue
, conditionally evaluatesop2
||
op1 || op2
either op1
orop2
istrue
, conditionally evaluatesop2
!
! op
op
isfalse
&
op1 & op2
op1
andop2
are bothtrue
, always evaluatesop1
andop2
|
op1 | op2
either op1
orop2
istrue
, always evaluatesop1
andop2
^
op1 ^ op2
if op1 and op2 are different--that is if one or the other of the operands is true but not both
Each shift operator shifts the bits of the left-hand operand over by the number of positions indicated by the right-hand operand. The shift occurs in the direction indicated by the operator itself.
Operator Use Operation >>
op1 >> op2
shift bits of op1
right by distanceop2
<<
op1 << op2
shift bits of op1
left by distanceop2
>>>
op1 >>> op2
shift bits of op1
right by distanceop2
(unsigned)These operators perform logical functions on their operands.
Operator Use Operation &
op1 & op2
bitwise and
|
op1 | op2
bitwise or
^
op1 ^ op2
bitwise xor
~
~op2
bitwise complement
The basic assignment operator looks as follows and assigns the value ofop2
toop1
.op1 = op2;In addition to the basic assignment operation, the Java programming language defines these short cut assigment operators that perform an operation and an assignment using one operator.
Operator Use Equivalent to +=
op1 += op2
op1 = op1 + op2
-=
op1 -= op2
op1 = op1 - op2
*=
op1 *= op2
op1 = op1 * op2
/=
op1 /= op2
op1 = op1 / op2
%=
op1 %= op2
op1 = op1 % op2
&=
op1 &= op2
op1 = op1 & op2
|=
op1 |= op2
op1 = op1 | op2
^=
op1 ^= op2
op1 = op1 ^ op2
<<=
op1 <<= op2
op1 = op1 << op2
>>=
op1 >>= op2
op1 = op1 >> op2
>>>=
op1 >>>= op2
op1 = op1 >>> op2
The form of the?:
operator is shown below. This operator returnsop2
ifop1
is true or returnsop3
ifop1
is false.op1 ? op2 : op3
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