Replacing Accented characters from a String

Hi all,
I have to replace accented characters from a input string with
normal plain text.I have coded as follows.

String input = "ÄÀÁÂÃ";
input= input.replaceAll("[ÀÁÂÄÃ]", "A"); like wise v can do for all.

output was:
************
AAAAA
now i want u people to suggest me on the above code n let me know ,s thr any other effective code to replacing accented characters from input string with normal text.???

Along with this i would like to know the list of accented characters used in french language,so that i can use those while replacing.

Thanks in Advance,
sundar.

s thr any other effective code to replacing accented characters from input string with normal text.???