Come faccio a dividere per 100 un Resultset???

[hunterzero]

public class fullstop2comma
{

private static String fullstop2comma(String string)
{
int i;
char[] str = string.toCharArray();
for (i=0;str[i]!='.';i++);

str[i]=',';

string="";
for (i=0;i<str.length;i++)
string = string+str[i];

return string;
}

public static void main(String[] arg)
{
System.out.println(fullstop2comma("3432.45645"));
}
}