In Java, a wrapper class is a mechanism that provides the facility to convert primitive data types into object and object into primitive data types. In other words, you can say that wrapper class is those class whose object is wrapped as a primitive data types.
Here is the list of Wrapper Classes.
| Primitive DataType | Wrapper class |
| boolean | Boolean |
| char | Character |
| byte | Byte |
| short | Short |
| int | Integer |
| long | Long |
| float | Float |
| double | double |
