Weird String

Question

Hi all
I have a strange problem for which I cannot find an easy answer.
I have a code similar to this:
char c = '\u0002';
String str = c + "blabla";
In the original context of this code the str variable completely ignores the starting character c.
However if I enter a dummy string in front of it:
String str = "" + c + "blabla";
then str is exactly as it should be.
I have tried to reproduce the error in a test environment but everything behaves as it should.
Is there any weird issue around String? Is there any reason why c should not enter the String definition the way the programmer wants it?

Answer 1

hey i try it. and String str = "" + c + "blabla"; prints out exactly the same with str = c + "blabla";
public class WeirdString {
     public static void main(String[] args) {
          char a = '\u0002';
          System.out.println(a);
          System.out.println(a + "bla bla");
          System.out.println("" + a + "bla bla");
}this is the ouput:
bla bla
bla blanothing wrong/weird with the String.
at your place, maybe your console can't print out '/u0002' cos it's not printable character... (maybe)