a For eg. Source Code : class Sample{ public static void main(String args[]){ int a=20, b=12; b = a + b; System.out.println("value of b is " + b); b += a; System.out.println("value of b is " + b); b -= a; System.out.println("value of b is " + b); b *= a; System.out.println("value of b is " + b); b /= a; System.out.println("value of b is " + b); b %= a; System.out.println("value of b is " + b); b &= 2; System.out.println("value of b is " + b); b |= 2; System.out.println("value of b is " + b); b ^= 2; System.out.println("value of b is " + b); b = 2; System.out.println("value of b is " + b); } } Output value of b is 32 value of b is 52 value of b is 32 value of b is 640 value of b is 32 value of b is 12 value of b is 0 value of b is 2 value of b is 0 value of b is 0 value of b is 0 6. Increment (++) and De"/>
ASK A QUESTION

    Operators in Hindi

in Hindi - Operators



Operators in Java

Types of Operators

  1. Arithmetic Operators
  2. Relational Operators
  3. Logical Operators
  4. Bitwise Operators
  5. Assignment Operators
  6. Increment / Decrement Operators
  7. Conditional / Ternary Operator

1. Arithmetic Operators
OperatorsExplaination
+ (Addition)ये दो Operands को add करता है |
- (Subtraction)ये right operand से left operand को निकाल देता है |
* (Multiplication)ये दो Operands को multiply करता है |
/ (Division)ये right operand द्वारा left operand को divide करता है |
% (Modulus)ये right operand द्वारा left operand को divide करके remainder निकालता है |

For eg.
Source Code :
//Sample.java
class Sample{
    
public static void main(String args[]) {

int a = 10, b = 5, c;

c=a + b;
    System.out.println("Addition of a and b is " + c);

c=a - b;
    System.out.println("Subtraction of a and b is " + c);

c=a * b;
    System.out.println("Multiplication of a and b is " + c);

c=a / b;
    System.out.println("Division of a and b is " + c);

c=a % b;
    System.out.println("Remainder of a and b is " + c);

}
}
Output
Addition of a and b is 15
Subtraction of a and b is 5
Multiplication of a and b is 50
Division of a and b is 2
Remainder of a and b is 0

2. Relational Operators
OperatorsExplaination
< (less than)एक Operand की value दूसरे Operand से कम हो तो ये true return करता है | for eg. num1=5; num2=6;
num1 < num2
> (greater than)एक Operand की value दूसरे Operand से ज्यादा हो तो ये true return करता है | for eg. num1=6; num2=5;
num1 > num2
<= (less than or equal to)एक Operand की value दूसरे Operand से कम हो या बराबर (equal) हो तो ये true return करता है | for eg. num1=5; num2=5;
num1 <= num2
>= (greater than or equal to)एक Operand की value दूसरे Operand से ज्यादा हो या बराबर (equal) हो तो ये true return करता है | for eg. num1=5; num2=5;
num1 >= num2
== (equal to)दो Operands जब बराबर(equal) होते है, तब ये true return करता है |
!= (not equal to)दो Operands जब एक-दूसरे से अलग होते है, तब ये true return करता है |

For eg.
Source Code :
//Sample.java
class Sample{

public static void main(String args[]){

int a = 6, b = 5;

if(a < b){
    System.out.println("a is less than b");
}
else{
    System.out.println("a is greater than b");
}

if(a <= b){
    System.out.println("a is less than b");
}
else{
    System.out.println("a is greater than b");
}

if(a > b){
    System.out.println("a is greater than b");
}
else{
    System.out.println("a is less than b");
}

if(a >= b){
    System.out.println("a is greater than b");
}
else{
    System.out.println("a is less than b");
}

if(a == b){
    System.out.println("a is equal to b");
}
else{
    System.out.println("a is not equal to b");
}
}
}
Output
a is greater than b
a is greater than b
a is greater than b
a is greater than b
a is not equal to b

3. Logical Operators
OperatorsExplaination
&& (logical &&)अगर दोनों conditions true हो तो ये true return करेगा |
for eg. (5<6) && (6>5)
|| (logical OR)अगर दोनों में से एक भी true है , तो ये true return करेगा |
for eg. (5<6) || (6>5)
! (logical not)अगर condition true हो तो ये उसे false कर देता है |
for eg. !((5<6) && (6>5))
!((5<6) || (6>5))

For eg.
Source Code :
//Sample.java
class Sample{

public static void main(String args[]){
    
if((5 < 6) && (6 > 5)){
    System.out.println("Condition is true.");
}
else{
    System.out.println("Condition is false.");
}
if((5 < 6) || (6 > 5)){
    System.out.println("Condition is true.");
}
else{
    System.out.println("Condition is false.");
}
if(!((5 < 6) && (5 > 6))){
    System.out.println("Condition is true.");
}
else{
    System.out.println("Condition is false.");
}
}
}
Output
Condition is true.
Condition is true.
Condition is true.

4. Bitwise Operators

Truth Table for &, |, ^
a b a & b a | b a ^ b
0 0 0 0 0
0 1 0 1 1
1 1 1 1 0
1 0 0 1 1

 

Operation on AND(a&b)
Decimal ValueBinary Value
अगर a = 20, b = 12 हो तो,
200 0 0 1   0 1 0 0
120 0 0 0   1 1 0 0
40 0 0 0   0 1 0 0

 

Operation on OR(a|b)
Decimal ValueBinary Value
अगर a = 20, b = 12 हो तो,
200 0 0 1   0 1 0 0
120 0 0 0   1 1 0 0
280 0 0 1   1 1 0 0

Operation on XOR(a^b)
Decimal ValueBinary Value
अगर a = 20, b = 12 हो तो,
200 0 0 1   0 1 0 0
120 0 0 0   1 1 0 0
240 0 0 1   1 0 0 0


Binary Left Shift( << ) and Right Shift( >> )

  • Left Shift(<<) for e.g. a=20; /* 0001 0100 */ a << 2 में numeric value के binary value में हर binary number को 2 binary numbers left side से shift करता है | for e.g.a=20; /* 0001 0100 */ तो इसका 0101 0000 मतलब 80 हो जायेगा |
  • Right Shift(>>) for e.g. a=20; /* 0001 0100 */ ये Left shift से बिलकुल उलट है | Right Shift a>> 2 में numeric value के binary value में हर binary number को 2 binary numbers right side से shift करता है | for e.g.a=20; /* 0001 0100 */ तो इसका 0000 0101 मतलब 5 हो जायेगा |

Complement Operator (~)

  • ये Operator सारे bit reverse करता है |
  • ये Operator 0 को 1 कर देता है और 1 को 0 कर देता है |

Operation on Complement( ~ )
Decimal ValueBinary Value
~120 0 0 0   1 1 0 0
2431 1 1 1   0 0 1 1

यहाँ पर Output -13 आने के बजाय 243 आया ऐसा क्यों ?
2's Complement of 243 -(reverse of 243 in binary + 1)
Operation on 2's Complement( ~ )
Decimal ValueBinary Value2's Complement
2431111 0011-(0000 1100+1) = -(0000 1101) = -13(output)

For eg.
Source Code :
class Sample{

public static void main(String args[]){
    
int a=20; /* 0001 0100 */
int b=12; /* 0000 1100 */
int c;

c=a&b;
	System.out.println("value of c is " + c); /* 4 = 0000 0100 */

c=a|b;
	System.out.println("value of c is " + c); /* 28 = 0001 1100 */

c=a^b;
	System.out.println("value of c is " + c); /* 24 = 0001 1000 */

c=a<<2;
	System.out.println("value of c is " + c); /* 80 = 0101 0000 */

c=a>>2;
	System.out.println("value of c is " + c); /* 5 = 0000 0101 */
}
}
Output
value of c is 4
value of c is 28
value of c is 24
value of c is 80
value of c is 5

5. Assignment Operators
Assignment Operators ग्यारह प्रकार के होते है |
  1. Assignment Operator (=)
  2. Add Assignment Operator (+=)
  3. Subtract Assignment Operator (-=)
  4. Multiply Assignment Operator (*=)
  5. Divide Assignment Operator (/=)
  6. Modulus Assignment Operator (%=)
  7. Bitwise AND Assignment Operator (&=)
  8. Bitwise OR Assignment Operator (|=)
  9. Bitwise XOR Assignment Operator (^=)
  10. Left Shift Assignment Operator (<<=)
  11. Right Shift Assignment Operator (>>=)
OperatorsExamples
= (assignment)c = a + b
+= (add assignment)c += a same as c = c + a
-= (subtract assignment)c -= a same as c = c - a
*= (multiply assignment)c *= a same as c = c * a
/= (divide assignment)c /= a same as c = c / a
%= (modulus assignment)c %= a same as c = c % a
&= (AND assignment)c &= a same as c = c & a
|= (OR assignment)c |= a same as c = c | a
^= (XOR assignment)c ^= a same as c = c ^ a
<<= (Left Shift assignment)c <<= a same as c = c << a
>>= (Right Shift assignment)c >>= a same as c = c >> a

For eg.
Source Code :
class Sample{

public static void main(String args[]){
    
int a=20, b=12;

b = a + b;
    System.out.println("value of b is " + b);

b += a;
    System.out.println("value of b is " + b);

b -= a;
    System.out.println("value of b is " + b);

b *= a;
    System.out.println("value of b is " + b);

b /= a;
    System.out.println("value of b is " + b);

b %= a;
    System.out.println("value of b is " + b);

b &= 2;
    System.out.println("value of b is " + b);

b |= 2;
    System.out.println("value of b is " + b);

b ^= 2;
    System.out.println("value of b is " + b);

b <<= 2;
    System.out.println("value of b is " + b);

b >>= 2;
    System.out.println("value of b is " + b);
}
}
Output
value of b is 32
value of b is 52
value of b is 32
value of b is 640
value of b is 32
value of b is 12
value of b is 0
value of b is 2
value of b is 0
value of b is 0
value of b is 0

6. Increment (++) and Decrement (--) with Prefix and Postfix
  • Increment Operator (++) ये variable की value 1 से बढ़ा देता है |
  • Decrement Operator (--) ये variable की value 1 से घटा देता है |

OperatorsSame as
++a (Increment Prefix)a = a + 1
--a (Decrement Prefix)a = a - 1
a++ (Increment Postfix)
a-- (Decrement Postfix)

for eg.
Source Code :
class Sample{

public static void main(String args[]){
    
int a=20;

    System.out.println("Print Value with prefix : " + ++a); // increase value with increment prefix
    System.out.println("Value of a : " + a);
    System.out.println("Print Value with prefix : " + --a); // decrease value with decrement prefix
    System.out.println("Value of a : " + a);
    System.out.println("Print Value with postfix : " + a++); // increase value with increment postfix
    System.out.println("Value of a : " + a);
    System.out.println("Print Value with postfix : " + a--); // decrease value with decrement postfix
    System.out.println("Value of a : " + a);
}
}

Print Value with prefix : 21
Value of a : 21
Print Value with prefix : 20
Value of a : 20
Print Value with postfix : 20
Value of a : 21
Print Value with postfix : 21
Value of a : 20

7. Conditional / Ternary Operator (?:)
  • Conditional Operator में तीन Expressions होते है |
  • Conditional Operator को Ternary Operator भी कहते है |
  • Conditional Operator में अगर पहला expression true होता है, तो वो दूसरा expression output में print करता है |
  • अगर Conditional Operator में पहला expression false होता है, तो वो तीसरा expression output में print करता है |
Syntax for Conditional / Ternary Operator
expression1 ? expression 2 : expression 3

for eg.
Source Code :
class Sample{

public static void main(String args[]){

int a = 100, b ;
b = ( a == 100 ? 2 : 0 ) ;

    System.out.println("Value of a is " + a);
    System.out.println("Value of b is " + b);
}
}
Output :
Value of a is 100
Value of b is 2