<h1 id="heading-class-modifiers">Class Modifiers</h1>
<ul>
<li>Class modifiers control how a class or mixin can be used, both from within its own library, and from outside the library where it's defined.
</li>
<li>Modifier keywords come before a class or mixin declaration.
</li>
</ul>
<ol>
<li><code>abstract</code>
</li>
<li><code>base</code>
</li>
<li><code>final</code>
</li>
<li><code>interface</code>
</li>
<li><code>sealed</code>
</li>
<li><code>mixin</code>
</li>
</ol>
<ul>
<li>Only the <code>base</code> modifier can appear before a mixin declaration.</li>
</ul>

# Class Modifiers

* Class modifiers control how a class or mixin can be used, both from within its own library, and from outside the library where it's defined.
    
* Modifier keywords come before a class or mixin declaration.
    

1. `abstract`
    
2. `base`
    
3. `final`
    
4. `interface`
    
5. `sealed`
    
6. `mixin`
    

* Only the `base` modifier can appear before a mixin declaration.

Dart : Class Modifiers

Class Modifiers