Arithmetic Operators

Addition

Add two integer numbers

int englishMark = 75;
int mathMark = 70;
int totalMarks = englishMark + mathMark;

double salary = 9500.70;
double bonus = 958.05;

double totalEarnings = salary + bonus;

Subtraction

double salary = 12500.50;
double tax = 125.45;

double salaryAfterTax = salary - tax;

Multiplication

double baseSalary = 9500.70;
double commissionRate = 0.020;

double commission = baseSalary * commissionRate;

Multiplication and Addition

double baseSalary = 9500.70;
double commissionRate = 0.020;

//Use brackets() to separate the operations
double commission = (baseSalary * commissionRate) + baseSalary;

Division

int result = 10 / 2; //result will be 5 after the operation

Decimal places are lost in integer division

int result = 7 / 2; // result will 3 not 3.5

Use double or float to preserve the decimal precision

double result = 7 / 2; //result will be 3.5

Modulo

Remainder division. The result is the remainder of the division operation.

int remainder = 7 % 2; //reaminder will have the value 1
int remainderValue = 10 % 5; // remainderValue will have the value 0

Brackets

For calculations involving many operands, use brackets for precedence

int result = (10 * 2) + 5 / (12 / 4);