Java Operator

Operators in Java are special symbols or keywords used to perform operations on variables and values. Java supports a rich set of operators classified into different categories.

Type	Description
Arithmetic Operators	Perform basic arithmetic operations like addition, subtraction, etc.
Relational Operators	Compare two values and return a boolean result.
Logical Operators	Perform logical operations like AND, OR, etc., often used with boolean values.
Assignment Operators	Assign values to variables.
Ternary Operator	A shorthand for `if-else` conditions.
Instanceof Operator	Test if an object is an instance of a specific class or subclass.

Arithmetic Operators:

Operator	Description	Example	Output
+	Addition	5 + 3	8
-	Subtraction	5 - 3	2
*	Multiplication	5 * 3	15
/	Division	5 / 2	2(int) or 2.5(float)
%	Modulus (remainder)	5 % 2	1

Example

int a = 5;

int b = 2;

System.out.println("Addition: "+(a + b));

System.out.println("Subtraction: "+(a - b));

System.out.println("Multiplication: "+a * b);

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

System.out.println("Remainder: "+a % b);

System.out.println("Increment: "+a++);

System.out.println("Decrement: "+a--);

Try it yourself

Relational (Comparison) Operators:

Operator	Description	Example	Output
==	Equal to	5 == 5	true
!=	Not equal to	5 != 3	true
>	Greater than	5 > 3	true
<	Less than	5 < 3	false
>=	Greater than or equal	5 >= 5	true
<=	Less than or equal	5 <= 3	false

Example

System.out.println("Equal to: "+(5 == 5));

System.out.println("Not Equal: "+(5 != 7));

System.out.println("Greater Than: "+(5 > 2));

System.out.println("Less Than: "+(5 < 2));

System.out.println("Greater or Equal: "+(5 >= 5));

System.out.println("Less or Equal: "+(5 <= 5));

Try it yourself

Logical Operators:

Operator	Description	Example	Output
&&	Logical AND	(5 > 3) && (3 > 1)	true
\|\|	Logical OR	(5 > 3) \|\| (3 < 1)	true
!	Logical NOT	!(5 > 3)	false

Example

// AND operator

System.out.println("AND: "+ (true && false));

System.out.println("AND: "+ (5>3 && 3>2));

System.out.println("\n");

// OR operator

System.out.println("OR: "+(true || false));

System.out.println("OR: "+(5>3 | 3>5));

System.out.println("\n");

// NOT operator

System.out.println("NOT: "+(!(5>3)));

Try it yourself

Assignment Operators:

Operator	Description	Example	Equivalent To
=	Assign	a = 5	------
+=	Add and assign	a += 5	a = a + 5
-=	Subtract and assign	a -= 5	a = a - 5
*=	Multiply and assign	a *= 5	a = a * 5
/=	Divide and assign	a /= 5	a = a / 5
%=	Modulus and assign	a %= 5	a = a % 5

Example

int a = 5;

System.out.println("Assign: "+a);

a += 2;

System.out.println("Add and Assign: "+a);

a -= 2;

System.out.println("Subtract and Assign: "+a);

a *= 2;

System.out.println("Multiply and Assign: "+a);

a /= 2;

System.out.println("Divide and Assign: "+a);

a %= 2;

System.out.println("Modulus and Assign: "+a);

Try it yourself

Ternary Operator:

Operator	Description	Syntax	Example	Output
? :	Shorthand for `if-else`	condition ? value1 : value2	(5 > 3) ? 10 : 20	10

Example

int age = 20;

String status = age >= 18 ? "Adult" : "Minor";

System.out.println(status); // Adult

Try it yourself

instanceof Operator:

Example

String str = "Hello";

System.out.println(str instanceof String); // Output: true

Try it yourself

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Type

Description

Arithmetic Operators:

Operator

Description

Example

Output

Relational (Comparison) Operators:

Operator

Description

Example

Output

Logical Operators:

Operator

Description

Example

Output

Assignment Operators:

Operator

Description

Example

Equivalent To

Ternary Operator:

Operator

Description

Syntax

Example

Output

instanceof Operator: