New to Java

String msg="what is up?";
String[] s = msg.split(" ");
String[] r = {"?","!",",",".","+"};
for(int i=0;i<s.length;i++){
     for(int j=0;j<r.length;j++){
          if(s.contains(r[j])){

s[i]=s[i].replaceAll(r[j], "");

}

}

}



Throws: Exception in thread "main" java.util.regex.PatternSyntaxException: Dangling meta character '?' near index 0 @ the replaceAll



Some googling showed that adding "\\" in front of the ? should fix it. But this doesn't seem to work. (IE r = {"\\?","!",",",".","+"}; )

It doesn't see that "\\?" is contained.



So I removed the check for containing...
String msg="what is up?";
String[] s = msg.split(" ");
String[] r = {"\\?","!",",",".","\\+"};
for(int i=0;i<s.length;i++){
     for(int j=0;j<r.length;j++){
          s=s[i].replaceAll(r[j], "");

}

System.out.println(s[i]);

}





It prints out nothing.

So some how, s[i] is empty after it replaces everything. I don't understand what's happening.



How can i remove these characters from my String?