Double replacement using repalceAll methot of Matcher

Hi all,
I'm using the java.util.regex package in my program.
I have noticed that this code
Pattern p = Pattern.compile(".*");
Matcher m = p.matcher ("anystring");
String s = m.replaceAll ("otherstring");
it like produce a wrong result, the string s going to contain
otherstringotherstring insted of otherstring.
It is wrong? I think this is a bun in JDK.
I'm using the j2se 1.4.1_01-b01 for linux
Anyone can help me?
Thanks

To elaborate on that explanation a little:
The pattern matches the whole input, and replaces it with "otherstring".
Then the pattern is matched against what is left, which is nothing, or "" (the empty string). Your pattern matches that, therefore it is 'replaced' by another occurance of "otherstring".

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