I have a function which currently only accepts two arguments - a string and a List for arguments.

This function goes ahead, gets a string from a language file. In this language file, I wanted to allow a possiblity to add arguments, which would be filled. Example: "{1} has thanked {2}". The function then goes ahead, and using MessageFormat.format adds the arguments to the message.

As I've gotten used to other languages (namely SourcePawn) which support the following syntax:
print("%s has thanked %s", user1, user2)
which replaces the %s tags with the arguments, I wanted to replicate this in Java. Is there any way to do so?

Desired result would be to make the function work like this:
fillInArguments("Hello {1}! You have {2} unread messages!", user.getName(), user.getUnreadMsgs())

CodePudding user response：

You could use String.format like this :

String.format("Hello %s! You have %d unread messages!", user.getName(), user.getUnreadMsgs());

Symbol following "%" will depends of the type of the variable you want to add in the string. see table here https://www.javatpoint.com/java-string-format

But if you directly have the parameters i guess you can also simply use concatenation like this :

"Hello "   user.getName()   "! You have "   user.getUnreadMsgs()   " unread messages!"

CodePudding user response：

It looks like you may be looking for optional parameters for a function. Try taking a look at Vitalii's answer here : Optional Parameters in Java