Why payment gateways are only designed in Java language? [closed] - c#

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I have been talking with one java programmer and he told me that all of the Payment Gateways are designed in Java because they are secure in comparison of any .net based language.
Is it true?

No, that is not correct. .NET based languages and Java can each be programmed securely, or insecurely.

Given the large number of high profile Java vulnerabilities which have surfaced over the years, I highly doubt the quality of the statement made by "one java programmer". This smells more of FUD spreading than any kind of factual statement.

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Visual Basic libraries on C# code [closed]

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Is it incorrect or frowned up to use Visual Basic libraries on C# code?
One particular example is the CSV parser which exists for VB but not for C#.
using Microsoft.VisualBasic.FileIO for TextFieldParser
I am sure there is other examples. Of course there are ways to do the same in C# but would require writing more code, why reinvent the wheel?
The whole point of .NET (well, one major point) is that it doesn't matter what language things are written in! So calling a VB library from C# is no big deal.
TextFieldParser is perfectly safe and reasonable to use from C#. It's part of the default Framework install. Use it!
"Why reinvent the wheel?" -- Exactly!

Implenting A Rest Web service with Java or C# [closed]

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We are about to implement a Web Service component and we are making a discussion regarding the language that we are going to implement it. It will be either C# or Java. Some of us are supporting Java while other members of the team are supporting C# mainly based on our experience and previous knowledge . Which of these two languages would be the better approach? Answer should consider issues such as Hosting and Deployment. Also please do not turn this in another war between these 2 great languages
Thank you
I don't think that there is any technological challenge of creating Rest based services in any of the language either C# or Java.
It mostly depends upon the skill set and echo system of your company. If you are already working in .net and windows stack and have developer with the same skill set then you can choose Asp.net WebApi otherwise you can go for JAVA.

The term for time spent understanding the code of a legacy application [closed]

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I'm having difficulty trying to remember the term describing the wasted time of trying to understand the code of a legacy application that has no documentation. I had thought the term was code rediscovery, but Google is telling me I'm misremembering.
You are probably referring to Software/Code Archaeology which is the process of studying badly/not documented legacy projects/code.

Why anonymous classes aren't included in languages such as C# and Dart? [closed]

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I write a lot of code in Java, and always use anonymous classes. They allows you write concise code without boilerplate.
However, many modern languages, like C# and Dart don't include them. Why they aren't included there? What's so bad about them? Are there any blog post or articles where languages' where authors describe why they excluded them from these languages?

Choosing the right methodology for developing a system such as Control Monitoring System [closed]

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I want to know the scope of the sufficient impact of the RUP methodology. i know it would be so efficient in on IS Systems such as MIS and HIS and so on but when you want to design and develop a system such as Control Monitoring System, is it be so sufficient as good as IS system. I mean when most challenges on such systems would be technical not rational, relational and informational that RUP is focussed on, is that be still so efficient as well. and if isn't, what methodologies you suggest instead of that?
The defence industry often uses some variant of MIL-STD-498 or its successor IEEE 12207. These are more technically oriented than RUP and less concerned with, well, selling consultants for Rational quite frankly.

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