Types of Java operators

JAVA OPERATORS

 

An operator is a symbol that are used in program to compute values and test logical expressions .

Java operators can be classified into different categories:-

• Arithmetic operator
• Assignment operator
• Comparison operator
• Unary operator
• Logical operator
• Shift operator
• Bitwise operator
• Conditional operator
• Instance of and members selection operator
• New operator

 

Arithmetic operator :- Arithmetic operator is used to perform the arithmetic operations like Addition , Subtraction , Multiplication ,Division and Modulo Division.

 

These can be expressed as:-

                              

Operator	Operator name
+	Addition
-	Subtraction
*	Multiplication
/	Division
%	Modulo

               

Assignment operator:- Assignment operator are used to assign the value of expression to the left hand operator .

It has two types -:

• Simple assignment operator
• Short hand operator

Simple assignment operator:- This is equal to (=) symbol is called assignment operator.

               Syntax: variable = expression

Short hand operator:- Consider the example x=x+3 ,In java we can also write this type of statement as x+=3 , this also perform the same operation

Operator	Example
+=	A+=B
-+	A-=B
*=	A*=B
/=	A/=B
%=	A%=B

 

Comparison operator:- Logical expression are developed using  comparison operators or relational operators. The operators are evaluating true or false . It is mostly used in conditional statements and looping structure.

Operator	Operator name
<	Less than
<=	Less than or Equal to
>=	Greater than or equal to
==	Equal to
!=	Not equal

                              

Unary operator:- Java supports two type of operator

• Increment operator
• Decrement operator

 

• Increment operator: The ++ increment operator add 1 to the operand . It is available in two forms .
  • Prefix increment              ++m
  • Postfix increment             m++
• Decrement operator: The decrement operator – can also be used in both prefix and postfix forms It decreases the value of variable by one.

• Prefix decrement              --m
• Postfix decrement            m—

Shift operator:- A shift operator allows you to perform bit operator allows you to perform bit manipulation on data . Java supports three types of Shift operator

1. Left shift    <<
2. Right shift  >>
3. Right shift with zero fill >>> or unsigned right shift

Bitwise operator:- Java supports four type of bitwise operator they are AND , OR , XOR , and NOT

• Bitwise AND :- The bitwise AND is represented by a ‘&’ symbol AND result in 1 if both the bits are 1 any other combination results is 0

 

Operand1	Operand2	Result
0	0	0
1	0	0
0	1	0
1	1	1

 

• Bitwise OR :- The bitwise operator is represented by the symbol  ‘||’.

 

Operand1	Operand2	Result
0	0	0
1	0	1
0	1	1
1	1	1

 

• Bitwise XOR :- The bitwise XOR operator is represented  by the symbol ’^’ .If the two operand is different the result is one otherwise the result is zero.

 

Operand1	Operand2	Result
0	0	0
1	0	1
0	1	1
1	1	0

• Bitwise not :- NOT operator is used to Invert the value of each bit of the operand .

 

Operand1	Result
1	0
0

 

Logical operator:- There are two logical operators available in Java .Java uses logical AND operator ‘&&’ and logical OR operator as ‘||’. Use of logical operator is to combine the result of Boolean expression.

Conditional operator or Ternary operator :- Java has a decision operator Called conditional operator. The conditional operator is known as ternary operator .

               It’s general form is –

               Test condition ? expressions:expression2;

Instance of operator:- This operator test whether an instance derive from a particular class or interface ‘Instance of ’ is the reserved word in java

               The return type is Boolean .

New operator :- When we allocate memory to an object we must use the new operator because when we create an instance of the class we must allocate memory  for it .

It is in two ways:

• Flower rose;
  1. Rose =new flower();
• Flower rose =new flower();