import java.util.regex.Pattern;
import java.util.regex.Matcher;
class Ideone
{
public static void main
(String[] asd
){ String sourcestring
= "ON cONfirmation, put * your hat"; sourcestring = sourcestring.replaceAll("(?<=\\s|^)(ON|\\*N|O\\*|\\*)(?=\\s|$)","").replaceAll(" "," ").trim();
System.
out.
println("sourcestring=["+sourcestring
+"]"); }
}
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