Operators
Java has a rich set of operators to change variable values. Operators can be classified into the following groups
Arithmetic Operators: Used for performing mathematical operations.
| Operator |
Explanation |
|
+
|
adds two operands
|
|
-
|
subtracts second operand from first
|
|
*
|
multiplies two operands
|
|
/
|
divides numerator by denominator
|
|
%
|
gives the remainder
|
|
++
|
increment operator increases integer value by one
|
|
--
|
decrement operator increases integer value by one
|
Example No.1:
<![CDATA[
Com.knowledge2life
public class Main {
public static void main(String[] args) {
int a = 13, b = 6;
// addition operator
System.out.println("Knowledge2life " + (a + b));
// subtraction operator
System.out.println("Knowledge2life " + (a - b));
// multiplication operator
System.out.println("Knowledge2life " + (a * b));
// division operator
System.out.println("Knowledge2life " + (a / b));
}
}
]]>
OUTPUT:
Knowledge2life 19
Knowledge2life 7
Knowledge2life 78
Knowledge2life 2
Relational Operators: Used to compare two variables or values
| Operator | Explanation |
|
==
|
Check if two operands are equal
|
|
!=
|
Check if two operands are not equal
|
|
>
|
Checks whether the left value is greater than right value
|
|
<
|
Checks whether the left value is smaller than right value
|
|
>=
|
Checks whether the left value is greater than or equal to right value
|
|
<=
|
Checks whether the left is smaller then or equal to right value.
|
Bitwise Operators: Used to perform operations bit by bit
| Operator | Explanation |
|
&
|
Bitwise AND
|
|
|
|
Bitwise OR
|
|
^
|
Bitwise EXCLUSIVE OR
|
|
<<
|
Left shift
|
|
>>
|
Right shift
|
Logical Operators: Used to check conditional expressions
| Operator | Explanation |
|
&&
|
Logical AND
|
|
||
|
Logical OR
|
|
!
|
Logical NOT
|
Assignment Operators: Used to assign a value to a variable
| Operator | Explanation |
|
=
|
Used to assign values from right side operands to left side operand
|
|
+=
|
Used to add right value to the left value and assign the result to left
|
|
-=
|
Used to subtract right value from the left value and assign the result to left
|
|
*=
|
Used to multiply right value to the left value and assign the result to left
|
|
/=
|
Used to divide right value to the left value and assign the result to left
|
|
%=
|
Calculates modulus using the operands and assign the result to left
|
Example:
<![CDATA[
Com.knowledge2life
public class Main {
public static void main(String[] args) {
int a = 10;
int var;
var = a;
System.out.println("Knowledge2life " + var);
// assign value using =+
var += a;
System.out.println("Knowledge2life " + var);
// assign value using =*
var *= a;
System.out.println("Knowledge2life " + var);
}
}
]]>
OUTPUT:
Knowledge2life 10
Knowledge2life 20
Knowledge2life 200
Misc Operators
| Operator | Explanation |
|
?:
|
Returns true or false value
|
|
instanceof
|
Returns true or false value
|
