Do resource bundles in Java support runtime string substitution?

Question

Can you do the following with a Java ResourceBundle?

In the properties file...

example.dynamicresource=You currently have {0} accounts.

Answer 1

MessageFormoat#format will work for the case like:

greetingTo=Have Param, saying hello {0}

You can declare two methods like this where RB is a instance of ResourceBundle:

/**This is a method that takes the param to substitute the placeholder**/
public String getString(String key, Object... params  ) {
    try {
        return MessageFormat.format(this.RB.getString(key), params);
    } catch (MissingResourceException e) {
        return "[" + key + "]";
    }
}

/**Without a param, this will derectly delegate to ResourceBundle#getString**/
public String getString(String key) {
    try {
        return this.RB.getString(key);
    } catch (MissingResourceException e) {
        return "[" + key + "]";
    }
}