Reference other variables in Java properties file

Question

Possible Duplicate:
How to reference another property in java.util.Properties?

I want to refer to other variables in my properties file, e.g.:

name=World
text=Hello $(name)!

"text" should now be "Hello World!".

I know I could do it by hand but is there anything I could use which does the work for me?

And what should happen, if at a later point, the property `name` is changed to "grils and guys"? Will `text`remain "Hello World!" or will it become "Hello Gils and guys!"? — rds, Dec 05 '11 at 10:22
doesn't really matter for me. so remaining "Hello World!" would be fine ;) — jhasse, Dec 05 '11 at 10:26

score 2 · Answer 1 · answered Dec 05 '11 at 10:46

Doing it by hand is the normal way to go. But I suppose you could also override the put method of Properties so that it's done only once.

@Override
public Object put(Object key, Object value) {
    super.put(key, substitute(value))
}

/** Substitutes variables with their value */
private String substitue(String string) {
   // TODO: find "{...}" and replace it by the value obtained by get()
   // Be careful here!
}

score 2 · Accepted Answer · edited May 23 '17 at 11:58

2

One of the options mentioned in the question that Michael linked to in his comment above that I feel may help you is eproperties. Looks pretty promising.

HTH!

edited May 23 '17 at 11:58

Community

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answered Dec 05 '11 at 10:57

aishwarya

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score 0 · Answer 3 · answered Dec 05 '11 at 10:20

0

Get all the building blogs from the properties file and then programatically construct what you need in java.

answered Dec 05 '11 at 10:20

dimitrisli

20,895
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@jhasse knows he could do it by hand... – rds Dec 05 '11 at 10:30

Reference other variables in Java properties file

3 Answers3

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