Operators
Operators are used to perform various operations on variables and values of various data types.
Arithmetic Operators
Basic math operations can be applied to int
, double
, and float
data types:
+
addition-
subtraction*
multiplication/
division%
modulo (yields the remainder)
These operations are not supported for other data types.
int a = 20;int b = 10;int result;result = a + b; // 30result = a - b; // 10result = a * b; // 200result = a / b; // 2result = a % b; // 0
Comparison Operators
Comparison operators can be used to compare two values:
>
greater than<
less than>=
greater than or equal to<=
less than or equal to==
equal to!=
not equal to
They are supported for primitive data types and the result of a comparison is a boolean value true
or false
:
int a = 5;int b = 3;boolean result = a > b;// Result now holds the boolean value true
There is also a type comparison operator, instanceof
. It tests if a given object is an instance of a particular class, subclass, or interface. It will return false
if the object being compared has a null
value.
class Example {public static void main(String args[]) {Example test = new Example();System.out.println(test instanceof Example);// Outputs true}}
Bitwise Operators
Bitwise operators are used to manipulate individual bits of a number.
&
Bitwise AND|
Bitwise OR^
Bitwise XOR~
Bitwise complement<<
Signed right shift operator>>
Signed left shift operator>>>
Unsigned right shift operator<<<
Unsigned left shift operator
They can only be operated on data of int
, char
, byte
, long
, and short
.
int a = 5;int b = 3;int bitwiseAnd = a & b;// 1int bitwiseOr = a | b;// 7int bitwiseXor = a ^ b;// 6int bitwiseComplement = ~a;// -6int bitwiseRightShift = a >> b;// 0int bitwiseLeftShift = a << b;// 40