Below are Operators supported, in Java

## Arithmetic operators

+(addition), -(subtraction), *(multiplication), /(dividedby), %(Modulo – reminder of division)

++(increment) x++; means x = x+1;

–(decrement)

## Difference between Pre increment and Post increment

**Post increment**

x++;

For eg, consider System.out.println(x++);

In above statement, first x is printed, and after that x is incremented

**Pre increment**

++x;

For eg, consider System.out.println(++x);

In above statement, first x is incremented, and after that x is printed

Similarly, pre and post increment can be used in other arithmetic expressions.

## Difference between Pre decrement and Post decrement

Pre decrement and post decrement operator as well, can be used in arithmetic expressions.

## Relational Operators or Comparison Operators

Relational or Comparison operators are used to perform comparison check between two variables or constants

x<3 (less than)
> (greater than)

<= (less than or equal to)
>= (greater than or equal to)

==( checking equal to),

!=(not equal to)

Generally Relational or Comparison expression evaluates to true or false.

Relational or Comparison operators are used with if, loops

## Logical Operators

Logical operators are used two combine two or more Relational or Comparison expressions.

&&(Logical and): evaluates to true only if both operands are true

Eg.(y==3)&&(z>20)

||(Logical or): evaluates to true, when either of the operand is true

!(Logical not): Negates logical expression, converts true to false, and vice versa

logical or and not takes two operands, where as logical not takes one operand

## Assignment Operators

=, +=(short hand assignment)

-=, *=, /=, %=

x op= y means x=x op y;

For eg. x+=y means x=x+y;

X*=y; means x =x*y;

## Conditional Operator or Ternary Operator

?:

Conditional operator takes three arguments

usage:

relational_expression? expression_1 : expression_2;

If relational expression gets evaluated to true, expression_1 is returned, else expression_2 is returned.

Eg. b = (a == 15) ? 21 : 52;

As shown in above example, if value of a is 15, 21 is assigned to b, else 52 is assigned to b

## Bitwise Operator

Bitwise operators perform operations on each binary representation

& – bitwise AND

| – bitwise OR

^ – bitwise XOR

<< - bit wise left shift
>> – bit wise right shift

16 & 8

0010000(binary representation of 16)

0001000(binary representation of 8)

Result: 00000000

## instanceof operator

instanceof example

We cannot overload operators in Java.How ever few operators like + has builtin overloading.

You may also like to read:

Basic data types in Java