Operators in Java

The Java operator offers a rich set of environment Java operators can be divided into the following categories:

• Arithmetic operators
• Relation operators
• Logical operators
• Bitwise operators
• Assignment operators
• Conditional operators
• Misc operators

Arithmetic operators

Operator	Description
+	adds two operands
-	subtract second operands from first
*	multiply two operand
/	divide numerator by denumerator
%	remainder of division
++	Increment operator increases integer value by one
--	Decrement operator decreases integer value by one

Example - 

class OperatorExample{  
public static void main(String args[]){  
int a=10;  
int b=5;  
System.out.println(a+b);//15  
System.out.println(a-b);//5  
System.out.println(a*b);//50  
System.out.println(a/b);//2  
System.out.println(a%b);//0  
}}  

Example - 

class OperatorExample{  
public static void main(String args[]){  
System.out.println(10*10/5+3-1*4/2);  
}}  

Relation operators

Operator	Description
==	Check if two operand are equal
!=	Check if two operand are not equal.
>	Check if operand on the left is greater than operand on the right
<	Check operand on the left is smaller than right operand
>=	check left operand is greater than or equal to right operand
<=	Check if operand on left is smaller than or equal to right operand

Example - 

class OperatorExample{  
public static void main(String args[]){  
System.out.println(10<<2);//10*2^2=10*4=40  
System.out.println(10<<3);//10*2^3=10*8=80  
System.out.println(20<<2);//20*2^2=20*4=80  
System.out.println(15<<4);//15*2^4=15*16=240  
}} 

Example - 

class OperatorExample{  
public static void main(String args[]){  
    //For positive number, >> and >>> works same  
    System.out.println(20>>2);  
    System.out.println(20>>>2);  
    //For negative number, >>> changes parity bit (MSB) to 0  
    System.out.println(-20>>2);  
    System.out.println(-20>>>2);  
}}  

Logical operators

Operator	Description	Example
&&	Logical AND	(a && b) is false
||	Logical OR	(a || b) is true
!	Logical NOT	(!a) is false

Example - 

class OperatorExample{  
public static void main(String args[]){  
int a=10;  
int b=5;  
int c=20;  
System.out.println(a<b&&a<c);//false && true = false  
System.out.println(a<b&a<c);//false & true = false  
}}  

Bitwise operators

Operator	Description
&	Bitwise AND
|	Bitwise OR
^	Bitwise exclusive OR
>>	left shift
<<	right shift

Now lets see truth table for bitwise &, | and ^

a	b	a & b	a | b	a ^ b
0	0	0	0	0
0	1	0	1	1
1	0	0	1	1
1	1	1	1	0

Assignment Operators

Operator	Description	Example
=	assigns values from right side operands to left side operand	a = b
+=	adds right operand to the left operand and assign the result to left	a+=b is same as a=a+b
-=	subtracts right operand from the left operand and assign the result to left operand	a-=b is same as a=a-b
*=	mutiply left operand with the right operand and assign the result to left operand	a*=b is same as a=a*b
/=	divides left operand with the right operand and assign the result to left operand	a/=b is same as a=a/b
%=	calculate modulus using two operands and assign the result to left operand	a%=b is same as a=a%b

Example - 

class OperatorExample{  
public static void main(String[] args){  
int a=10;  
a+=3;//10+3  
System.out.println(a);  
a-=4;//13-4  
System.out.println(a);  
a*=2;//9*2  
System.out.println(a);  
a/=2;//18/2  
System.out.println(a);  
}}  

Conditional operator

It is also known as ternary operator and used to evaluate Boolean expression,

epr1 ? expr2 : expr3

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