Wednesday June 08, 2005
Converting an int to a String I came across this tip in a blog referenced from Eric's linkblog.
The author mentions that you can convert from an int to a String like this:
int one = 1; String str = one + "";And he calls that cute!
I disagree - I think that's ugly (and as he points out it's less efficient).
There's a clean way to do this, not listed in his blog:
int one = 1; String str = Integer.toString(one);Nice efficient bytecode too:
0: iconst_1 1: istore_1 2: iload_1 3: invokestatic #2; //Method java/lang/Integer.toString:(I)Ljava/lang/String; 6: astore_2 7: returnand there are variations of the method which lets you convert using another base - so you can convert to hex using
Integer.toString(one, 16) for example.
(String.valueOf(int) will turn around and call the above method by the way.)
