# Common patterns | |
## Classes | |
### Creating a simple class | |
> ```dart | |
> class Animal {} | |
> ``` | |
```dart | |
new ClassBuilder( | |
'Animal', | |
) | |
``` | |
### Creating an abstract class with a method | |
> ```dart | |
> abstract class Animal { | |
> void eat(); | |
> } | |
> ``` | |
```dart | |
new ClassBuilder( | |
'Animal', | |
asAbstract: true, | |
)..addMethod( | |
new MethodBuilder.returnVoid( | |
'eat', | |
asAbstract: true, | |
), | |
) | |
``` |