Java Regex

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    String from0to199="[0-1]?\d{1,2}"; String from200to249="2[0-4]?\d"; String from250to255="25[0-5]"; String from0to255 ="(" + from0to199 + "|" + from200to249 + "|" + from250to255 + ")"; String dot="\."; String pattern=from0to255+dot+from0to255+dot+from0to255+dot+from0to255;