Java provides a rich set of operators to use in manipulating variables. A value used on either side of an operator is called an **operand**.

For example, in the expression below, the numbers 5 and 8 are operands of the plus operator:

` int a = 5 + 8;`

### Java arithmetic operators:

### 1. + addition

2. – subtraction

3. * multiplication

4. / division

5. % modulo

Arithmetic operators are used in mathematical expressions in the same way that they are used in algebraic equations.

## Addition:

The + operator adds together two values, such as two constants, a constant and a variable, or a variable and a variable. Here are a few examples of addition:

```
int a = 40 + 10;
int b = a + 34;
int c = a + b;
```

## Subtraction:

The – operator subtracts one value from another.

int a = 100 - 15; int b = a - 5; int c = a - b;

## Multiplication:

```
int a = 100 * 6;
int b = a * 3;
int c = b * c;
```

## Division:

The / operator divides one value by another.

```
int x = 500 / 5;
int y = x / 4;
int z = x/ y;
```

In the example above, the result of the division equation will be a whole number, as **int **is used as the data type. You can use **double **to retrieve a value with a decimal point.

## Modulo:

The **modulo **(or remainder) math operation performs an integer division of one value by another, and returns the remainder of that division.

The operator for the modulo operation is the percentage (%) character.

Example:

```
int value = 36;
int result = value % 5; // result is 1
```

Dividing 36 by 5 returns a quotient of 7, with a remainder of 1. Thus, the value of 1 is assigned to the **result **variable.

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