CODEWITHSUNDEEP
javainternationalization
Srijit
Srijit

Reputation: 505

text placeholders for multiple languages in Java

I am stuck with a problem dealing with displaying text in multiple languages. I achieve the language fairly easily by using resource bundles, but what made the problem more complicated is the requirement that certain computed values need to be injected into the text at runtime.

For example

You have earned 15 badges out of 39

where 15 and 39 are computed at runtime.

Initially I solved the problem by adding placeholder tag in the text like below

badgeMessage_en=You have earned ${earned_badge} badges out of ${total_badge}

and then using regular expression to replace them at runtime. But now the problem is we need to add support for other languages that does not have ${ in the charset. and I am stuck

what do I do? Is there a placeholder char thats universal in all charsets?

Thanks in advance for any help.

Upvotes: 2

Views: 1946

Answers (1)

micha
micha

Reputation: 49582

You should have a look at Java's MessageFormat class:

String pattern = resourceBundle.getString(key); 
String message = MessageFormat.format(pattern, args);

MessageFormat automatically replaces placeholders between { and }

For example:

properties:
my.message=You have earned {0} badges out of {0}

Java:
String pattern = bundle.getString("my.message");
String message = MessageFormat.format(pattern, 15, 39); // You have earned 15 badges out of 39

MessageFormat also supports more sophisticated options like formatting dates, times or numbers.

Upvotes: 4

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