best way of replacing all tags in a string with java -

I have a service method that takes the string and then replaces the tag in the string with the item from the tag library. As follows:

 for  (MetaDataDTO tag: tagValues) {message = message.replace (tag.getKey (), tag getText1 ()); }  

Obviously; They make piles of new strings and have BAD. But StringBuilder is harder to use the method to use for multiple strings inside a string. How can I make my way more efficient?

This is for use with blocks of text:

Dear # First Name #, # Application Type # Your application for # has been approved # Sorry.

Whereas # firstname #, etc. are the keys to the meta data database. It is also possible that the tag hashes are not surrounded by characters. Actually you want to copy execution like this:

 
 
 public stable string replacement tag (string message, map & lt; string, string & gt; tag) {patterns p = pattern.compile ("# (\\ w +) #"); Matter M = P. Mitcher (message); Boolean results = m.find (); If (result) {stringbuffer sb = new stringbuffer (); Do {m.appendReplacement (sb, tags.containsKey (m.group (1)? Tags.get (m.group (1)): ""); result = m.find ();} while (result); m .appendTail (sb); Message = sb.toString ();} Return message;}  

Note: I have created an impression about a valid tag ( (I.e. "# ([\ w _] +) #").

I have also considered the tag above that looks something like:

map & Lt; string, string & gt; tag = new hashmop & lt; string, string & gt; (); tags.add ("firstname", "Skippy");

and No:

  tag.add ("# ago name #", "Skippy");  

If the second is correct, you will need to adjust accordingly.

This method passes only one string in the message string, so it is not more efficient than this Get it.