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<TITLE>Abstract</TITLE>
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<H1>Abstract</H1>
<P><UL>
- Classes
<BR><UL>
<LI> can抰 be instantiated
</UL></UL><UL>
- Methods
<UL>
<LI> can抰 have any implementation
<LI> need implementation from their children</UL></UL></P>
<P><UL>
abstract class Shape {
<BR></UL><UL>
protected int edges_num;
</UL><UL>
abstract void draw();
</UL><UL>
}
</UL><UL>
</UL><UL>
class Star extends Shape{
</UL><UL>
Star(int _edges) {
</UL><UL>
edges_num = _edges;
</UL><UL>
}
</UL><UL>
public void draw() {}
</UL><UL>
}</UL></P>
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