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I have one Shopping cart application, i that i have
selected some items, while clicking submit button by
mistake i have clicked twice or trice, that time items are
selected twice or trice. Actually i want only one copy of
items but its selected twice or trice. So how can we avoid
this problem?
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Answer Posted / veera
If this question in core (jave Collection): if you are
using list,it will take the duplicate values. so pass
through this list into set it will remove the duplicate
values.
if this question in J2EE servlets: use post method, it it
is not idempotent. once you add item to cart, it will give
the acknowledge before changing in server.
| Is This Answer Correct ? | 12 Yes | 2 No |
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