Operators in Java |

Operators in Java

Operator in Java is a symbol that is used to perform operations. For example: +, -, *, / etc.

There are many types of operators in Java which are given below:

Unary Operator,
Arithmetic Operator,
Shift Operator,
Relational Operator,
Bitwise Operator,
Logical Operator,
Ternary Operator and
Assignment Operator.

Java Unary Operator

The Java unary operators require only one operand. Unary operators are used to perform various operations i.e.:

incrementing/decrementing a value by one
negating an expression
inverting the value of a boolean

Java Unary Operator Example: ++ and --

public class OperatorExample{

public static void main(String args[]){

int x=10;

System.out.println(x++);//10 (11)

System.out.println(++x);//12

System.out.println(x--);//12 (11)

System.out.println(--x);//10

}}

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Output:

Java Unary Operator Example 2: ++ and --

public class OperatorExample{

public static void main(String args[]){

int a=10;

int b=10;

System.out.println(a++ + ++a);//10+12=22

System.out.println(b++ + b++);//10+11=21

}}

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Output:

Java Unary Operator Example: ~ and !

public classOperatorExample{

public static voidmain(String args[]){

int a=10;

booleanc= true;

booleand= false;

System.out.println(~a);//-11 (minus of total positive value which starts from 0)

System.out.println(~b);//9 (positive of total minus, positive starts from 0)

System.out.println(!c);//false (opposite of boolean value)

System.out.println(!d);//true

}}

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Output:

-11

false

true

Java Arithmetic Operators

Java arithmetic operators are used to perform addition, subtraction, multiplication, and division. They act as basic mathematical operations.

public class OperatorExample{

public static voidmain(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

}}

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Output:

Java Arithmetic Operator Example: Expression

public classOperatorExample{

public static voidmain(String args[]){

System.out.println(10*10/5+3-1*4/2);

}}

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Output:

Java Left Shift Operator

The Java left shift operator << is used to shift all of the bits in a value to the left side of a specified number of times.

Java Left Shift Operator Example

public classOperatorExample{

public static voidmain(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

}}

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Output:

240

Java Right Shift Operator

The Java right shift operator >> is used to move the value of the left operand to right by the number of bits specified by the right operand.

Java Right Shift Operator Example

publicOperatorExample{

public static voidmain(String args[]){

System.out.println(10>>2);//10/2^2=10/4=2

System.out.println(20>>2);//20/2^2=20/4=5

System.out.println(20>>3);//20/2^3=20/8=2

}}

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Output:

Java Shift Operator Example: >> vs >>>

public classOperatorExample{

public static voidmain(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);

}}

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-5

1073741819

Java AND Operator Example: Logical && and Bitwise &

The logical && operator doesn't check the second condition if the first condition is false. It checks the second condition only if the first one is true.

The bitwise & operator always checks both conditions whether first condition is true or false.

public class OperatorExample{

public static void main(String args[]){

inta=10;

intb=5;

intc=20;

System.out.println(a < b&&a < c); //false && true = false

System.out.println(a < b&a < c); //false & true = false

Test it Now

false

Java AND Operator Example: Logical && vs Bitwise &

public classOperatorExample{

public static voidmain(String args[]){

inta=10;

intb=5;

intc=20;

System.out.println(a < b&&a++ < c); //false && true = false

System.out.println(a); //10 because second condition is not checked

System.out.println(a < b&a++ < c); //false && true = false

System.out.println(a); //11 because second condition is checked

}}

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false

Java OR Operator Example: Logical || and Bitwise |

The logical || operator doesn't check the second condition if the first condition is true. It checks the second condition only if the first one is false.

The bitwise | operator always checks both conditions whether first condition is true or false.

public classOperatorExample{

public static voidmain(String args[]){

int a=10;

int b=5;

intc=20;

System.out.println(a>b||a < c); //true || true = true

System.out.println(a>b|a < c); true | true = true

System.out.println(a>b||a++ < c); //true || true = true

System.out.println(a); //10 because second condition is not checked

System.out.println(a>b|a++ < c);

System.out.println(a);