Java Operators

 

                     OPERATORS

 

 Arithmetic Operators:

Operator	Meaning	Example
+	Addition	3+4
-	Subtraction	5-7
*	Multiplication	5*5
/	Division	14/7
%	Modulus	20%7

     

SIMPLE ARITHMETIC:

File name: ArithmeticTest.java

class ArithmeticTest{

public static void main (String args[]){

short x=6;

int y=4;

float a=12.5f;

float b=7f;

System.out.println("x  is"+x+",y  is"+y);

System.out.println("x+y="+(x+y));

System.out.println("x-y="+(x-y));

System.out.println("x*y="+(x*y));

System.out.println("x/y="+(x/y));

System.out.println("x%y="+(x%y));

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

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

}

}

The Output appears as given below:

ASSIGNMENT OPERATORS:

The assignment operators used in C and C++ are also used in Java. A selection of assignment

operators is given.

Expression	Meaning
x+=y	x=x+y
x-=y	x=x-y
x*=y	x=x*y
x/=y	x=x/y
x=y	x=y

 

Example:

File name: AssignDemo.java

class AssignDemo{

  public static void main (String args[]){

int a=1;

int b=2;

int c=3;

a+=5;

b*=4;

c+=a*b;

c%=6;

System. out.println("a="+a);

System. out.println("b="+b);

System. out.println("c="+c);

}

}

Output:

Incrementing and Decrementing :

File name: PrePostFixTest.java

class PrePostFixTest{

public static void main(String  args[]){

       int x=10;

       System.out.println("-------------------------------------------");

       System.out.println("Initial value of X:"+x);

       System.out.println("X value in Println:"+x++);

       System.out.println("After Post increment X:"+x);

       System.out.println("-------------------------------------------");

        x=10;

       System.out.println("Initial value of X:"+x);

        System.out.println("X value in Println:"+ ++x);

       System.out.println("After Post increment X:"+x);

       System.out.println("-------------------------------------------");

}

}

The output appeares as given below:

Comparisons   Or  Relational Operator

Relational operator

operator	Meaning	example
==	equal	x == 3
!=	not equal	x != 3
<	less than	x<3
>	greater than	x>3
<=	less than or equal to	x<=3
>=	greater than or equal to	x>=3

File name:Comparison.java

class Comparison{

         public static void main (String args[]){

int x=6;

int y=4;

System.out.println("x  is"+x+",y  is"+y);

System.out.println("x<y="+(x<y));

System.out.println("x<=y="+(x<=y));

System.out.println("x>y="+(x>=y));

System.out.println("x==y="+(x==y));

System.out.println("x!=y="+(x!=y));

}

}

 Output

Logical Operator

AND,OR,XOR,NOT are the logical operator available in java.

File name: Logical.java

class Logical{

         public static void main (String args[]){

int x=6;

int y=4;

 

System.out.println((x==6)&&(y==3));

System.out.println((x==6)||(y==3));

System.out.println(!(x<y));

}

}

Output

Bitwise Operator

operator	meaning
~	bitwise complement
&	bitwise AND
|	bitwise OR
^	bitwise XOR
<<	left shift
>>	right shift

 

A	B	A|B	A&B	A^B	~A
0	0	0	0	0	1
1	0	1	0	1	0
0	1	1	0	1	1
1	1	1	1	0	0

Example :

File name: BitwiseDemo.java

class BitwiseDemo

{

public static void main(String args[])

{

int x=10;

int y=20;

int z=30;

x=x | 40;

y>>=1;

z<<=2;

System.out.println("x | 40 :" +x);

System.out.println("y>>1 :" +y);

System.out.println("z<<2 :" +z);

// reinitialize to its original value.

x=10;

z=30;

x=x^z;

System.out.println("x^z:" +z);

}

}

Output

String-concatenation operator

Concatenation operator  (+)

system.out.println("I"+"love"+"BGMI");

output of the above line is : I love BGMI

File name: Concatenation.java

class Concatenation{

public static void main(String args[]){

System.out.println("I "+" love "+" India ");

}

}

Output

Comments

eg 1

//this is an single line comment

/*this is

            is an

           multiline

        comment*/

eg 2

/**

*this example demonstrates documentation comments.

/**

* this class doesn't contains any methods except main.

*/