Operator

By | October 25th 2019 08:53:41 PM | viewed 117 times

Operators in java

  • Unary Operatort
  • Arithmetic Operator
  • Shift Operator
  • Relational Operator
  • Bitwise Operator
  • Logical Operator
  • Ternary Operator and
  • Assignment Operator

Java Operator Precedence

Operator Type Category Precedence
Unary postfix expr++ expr--
prefix ++expr --expr +expr -expr ~ !
Arithmetic multiplicative * / %
additive + -
Shift shift << >> >>>
Relational comparison < > <= >= instanceof
equality == !=
Bitwise bitwise AND &
bitwise exclusive OR ^
bitwise inclusive OR |
Logical logical AND &&
logical OR ||
Ternary ternary ? :
Assignment assignment = += -= *= /= %= &= ^= |= <<= >>= >>>=
Java Unary Operator
     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  
    }}  

Output:

10
12
12
10

    lass 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  
      
    }}  

Output:

22
21

    class OperatorExample{  
    public static void main(String args[]){  
    int a=10;  
    int b=-10;  
    boolean c=true;  
    boolean d=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  
    }}  

Output:

-11
9
false
true


 
Java Arithmetic Operators
 
     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  
    }}  

Output:

15
5
50
2
0


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

Output:

21

    
 
Java Shift Operator
     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  
    }}  

Output:

40
80
80
240


    class OperatorExample{  
    public static void main(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  
    }}  

Output:

2
5
2


    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);  
    }}  

Output:

5
5
-5
1073741819


 
Logical and Bitwise
         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  
    }}  

Output:

false
false


    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);//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  
    }}  

Output:

false
10
false
11
 

    class OperatorExample{  
    public static void main(String args[]){  
    int a=10;  
    int b=5;  
    int c=20;  
    System.out.println(a>b||a>b|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);//true | true = true  
    System.out.println(a);//11 because second condition is checked  
    }}  

Output:

true
true
true
10
true
11


 
Java Ternary Operator
 Java Ternary Operator Example

    class OperatorExample{  
    public static void main(String args[]){  
    int a=2;  
    int b=5;  
    int min=(a<b)?a:b;  
    System.out.println(min);  
    }}  

Output:

2
 

    class OperatorExample{  
    public static void main(String args[]){  
    int a=10;  
    int b=5;  
    int min=(a<b)?a:b;  
    System.out.println(min);  
    }}  

Output:

5

 
Java Assignment Operator 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);  
    }}  

Output:

13
9
18
9


    class OperatorExample{  
    public static void main(String args[]){  
    short a=10;  
    short b=10;  
    //a+=b;//a=a+b internally so fine  
    a=a+b;//Compile time error because 10+10=20 now int  
    System.out.println(a);  
    }}  

Output:

Compile time error


    class OperatorExample{  
    public static void main(String args[]){  
    short a=10;  
    short b=10;  
    a=(short)(a+b);//20 which is int now converted to short  
    System.out.println(a);  
    }}  

Output:

20

 
bONEandALL