Just to remember... nothing more :
| byte | Short numerical from -128 to +127 | 1 byte |
| short | Short numerical from -32768 to +32767 | 2 bytes |
| int | Numerical from -2 147 483 648 to +2 147 483 647 | 4 bytes |
| long | Long numerical from -263 to +263 -1 | 8 bytes |
| float | Decimal from -1.4 * 10-45 to +3.4 * 1038 | 4 bytes |
| double | Long decimal from 4.9 * 10-324 to +1.7 * 10308 | 8 bytes |
| char | Unicode character (65536 possible characters) | 2 bytes |
| boolean | Boolean (true or false) | 1 byte |