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Question

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?

Question Submitted By :: Bosh

I also faced this Question!!

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Answer Posted By

Re: 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?

Answer
# 1

Using token mechanism in struts we can duplicate requests in
web applications.

Is This Answer Correct ?

1 Yes

0 No

Balagangadhar

Answer
# 2

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 ?

2 Yes

1 No

Veera

Question	Asked @	Answers
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