Why containers contains add and remove method while component does not

Dear all,I am working in swing, i want to know why all containers contains add and remove method while component does not contains these mehod. Please describe in detail.ThanksBipin Kumar
[215 byte] By [Heap_Recollectiona] at [2007-10-3 3:52:01]
# 1
Because.
camickra at 2007-7-14 21:49:44 > top of Java-index,Desktop,Core GUI APIs...
# 2
> Please describe in detail.Check any dictionary.
ValentineSmitha at 2007-7-14 21:49:44 > top of Java-index,Desktop,Core GUI APIs...
# 3
Think about it. What is a container?
masijade.a at 2007-7-14 21:49:44 > top of Java-index,Desktop,Core GUI APIs...