why addcomponent and removecomponent method are not in component class,

java.awt.Container has the appropriate add and remove methods:

http://java.sun.com/javase/6/docs/api/java/awt/Container.html

If that seems odd to you, you need to think about the Composite Pattern:

http://en.wikipedia.org/wiki/Composite_pattern

[url #" style="display: block; background-image: url('http://upload.wikimedia.org/wikipedia/en/1/13/Compositepattern.png'); width: 406px; height: 271px] [/url]

Hippolytea at 2007-7-12 15:50:21 >