Arithmetic operators

Arithmetic operators perform mathematical operations on numeric types.

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

Examples:

int a = 10, b = 3;
System.out.println(a + b); // 13
System.out.println(a - b); // 7
System.out.println(a * b); // 30
System.out.println(a / b); // 3 (integer division)
System.out.println(a % b); // 1

Division with floating‑point:

double x = 10.0, y = 3.0;
System.out.println(x / y); // 3.3333333333333335

Division by zero:

• Integer division by zero throws ArithmeticException.
• Floating‑point division by zero yields Infinity or NaN.

// int zeroDiv = 10 / 0; // throws ArithmeticException
double inf = 10.0 / 0.0; // Infinity

Modulus with negative numbers: The sign of the result is the sign of the dividend.

System.out.println(10 % 3);  // 1
System.out.println(10 % -3); // 1
System.out.println(-10 % 3); // -1