Whats best practice to use 1 string in 2 places – e.g. 2 types of logging.

I sometimes have a situation like this.

System.out.println ("Error No 1: " + errstr);
log.print          ("Error No 1: " + errstr);

Then the best I can think to make it better is this (for not having more than 1 string).

String str = "Error No 1: " + errstr;
System.out.println (str);
log.print          (str);

Sure, I can hide it.

my.log ("Error No 1: " + errstr);    // does both by implementation

But if it is not used often it may increase complexity instead of decrease it.

Maybe the question is opinion-based – but I think it is worth asking if it makes my coding better.