# Java Primitive Data Types

## Numeric data types

### Whole numbers

**byte** (from -128 to 127, stored on 8 bit):

```java
byte num = 100;
```

**short** (from -32,768 to 32,767, stored on 16 bit):

```java
short num2 = 20000;
```

**int** (from -2,147,483,648 to 2,147,483,647, stored on 32 bit):

```java
int num3 = 200000000;
```

**long** (from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807, stored on 64 bit):

```java
long num4 = 200000000000000L;

```

### Decimal numbers

**float** (up to 6-7 decimal digits, stored on 32 bit):

```java
float num5 = 10.8241f;
float num6 = 10.8241e2f; // 1082.41
```

**double** (up to 15-16 decimal digits, stored on 64 bit):

```java
double num7 = 20.8123819238912d;
double num8 = 20.8123819238912e3d; // 20812.3819238912
```

## Other primitive data types

**boolean** (true or false):

```java
boolean bool = true;
```

**character** (a single character in single quotes, or an ASCII value):

```java
char character = 'A';
char ascii = 65;
```