Is concatenating with an empty string to do a string conversion really that bad?
- by polygenelubricants
Let's say I have two char variables, and later on I want to concatenate them into a string. This is how I would do it:
char c1, c2;
// ...
String s = "" + c1 + c2;
I've seen people who say that the "" + "trick" is "ugly", etc, and that you should use String.valueOf or Character.toString instead. I prefer this construct because:
I prefer using language feature instead of API call if possible
In general, isn't the language usually more stable than the API?
If language feature only hides API call, then even stronger reason to prefer it!
More abstract! Hiding is good!
I like that the c1 and c2 are visually on the same level
String.valueOf(c1) + c2 suggests something is special about c1
It's shorter.
Is there really a good argument why String.valueOf or Character.toString is preferrable to "" +?
Trivia: in java.lang.AssertionError, the following line appears 7 times, each with a different type:
this("" + detailMessage);
