Multiline strings concatenation in Java

I'm looking for some help. What is the easiest way to concatenate multiline strings in Java and print it after ?

For example : I've got two strings :

String turtle1 = "         _\r\n     .-./*)\r\n   _/___\\/\r\n     U U\r";
String turtle2 = "         _\r\n     .-./*)\r\n   _/___\\/\r\n     U U\r";

And I want to get this result in the Java Eclipse console :

         _            _
     .-./*)       .-./*)
   _/___\/      _/___\/
     U U          U U

I've already try some algorithms to divide my strings in differents parts and after re-concatenate it. But it was without success. I know there are StringBuffer class and StringBuilder class but after some research, I didn't found something that correspond to my need.

Thanks in advance for your help.