1. Arithmetic Operators

Used for basic math operations.

Operator Description Example
+ Addition a + b
- Subtraction a - b
* Multiplication a * b
/ Division a / b
% Modulus (remainder) a % b

2. Relational / Comparison Operators

Used to compare values.

Operator Description Example Result
== Equal to a == b true/false
!= Not equal to a != b true/false
> Greater than a > b true/false
< Less than a < b true/false
>= Greater or equal a >= b true/false
<= Less or equal a <= b true/false

3. Logical Operators

Used to combine multiple conditions.

Operator Description Example
&& Logical AND a > 0 && b < 10
\|\| Logical OR a > 0 \|\| b < 10
! Logical NOT !(a > 0)

4. Assignment Operators

Used to assign values.

Operator Example Equivalent
= a = b assign b to a
+= a += b a = a + b
-= a -= b a = a - b
*= a *= b a = a * b
/= a /= b a = a / b
%= a %= b a = a % b

🔹 5. Unary Operators Operate on a single operand.

Operator Description Example
+ Unary plus +a
- Unary minus -a
++ Increment a++ or ++a
-- Decrement a-- or --a
! Logical NOT !true

6. Ternary Operator (? Operator)

A shorthand for if-else.

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int max = (a > b) ? a : b;

Code Demo

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public class OperatorDemo {
    public static void main(String[] args) {
        int a = 10, b = 3;

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

        // Comparison
        System.out.println("a > b? " + (a > b));

        // Logical
        boolean result = (a > 5) && (b < 5);
        System.out.println("Logical AND: " + result);

        // Assignment
        int c = 5;
        c += 3; // same as c = c + 3
        System.out.println("After += : " + c);

        // Ternary
        int max = (a > b) ? a : b;
        System.out.println("Max: " + max);
    }
}

Output:

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Sum: 13
Remainder: 1
a > b? true
Logical AND: true
After += : 8
Max: 10