Preserving order in property file while it's being updated

Asked Nov 03 '14 at 10:47

Active Nov 03 '14 at 10:53

Viewed 1,452 times

I am trying to modify my existing property file using Properties class methods. The file is getting updated but it does not maintain property order. As for example, if I have data like this:

baseurl=stackoverflow.com
user_id=hello
pass=test123

After updating the file it's not maintaining key=value pairs. Updated file contents change sometimes as below:

pass=test123
baseurl=stackexchange.com
user_id=hell0222

I want my data preserve order as it was before updating. Please suggest me if any of you know how to preserve order in property file.

edited Nov 03 '14 at 10:53

Erwin Bolwidt

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asked Nov 03 '14 at 10:47

optimistic_creeper

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Properties is a Hashtable, and Hashtables don't have any order. You'll have to do that by yourself. – JB Nizet Nov 03 '14 at 10:50
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This may help: http://stackoverflow.com/questions/1312383/pulling-values-from-a-java-properties-file-in-order – SpaceTrucker Nov 03 '14 at 10:52
Why do you care? Order isn't significant in a properties file. – user207421 Nov 03 '14 at 11:01
Since I've to maintain the order. @EJP – optimistic_creeper Nov 03 '14 at 11:08
@optimist_creeper Reiterating the requirement doesn't answer my question. – user207421 Nov 03 '14 at 11:20
I am not reiterating. I am told to preserve the order while updating the file. Don't mind. – optimistic_creeper Nov 03 '14 at 11:35
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@EJP when you are maintaining resource bundles you don't want to mess up the order because messages next to each other are there because of there shared context. But maybe some automatic process is there to fill in missing keys. So this shouldn't mess everything up. – SpaceTrucker Nov 03 '14 at 11:36
In that case I would use an existing *editor* to edit the properties file, instead of writing a Java application that cannot possibly meet the requirements. – user207421 Nov 04 '14 at 08:48

Preserving order in property file while it's being updated

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