How to use Class Pattern to find match word ?

Hi All:
Now I want find some words in a article . for example , I want to find a word ---"book" . For this purpose , I use java.util.regex.Pattern to do that . Following is my code
String tmpStr = ".*?[\\W]+book[\\W]+.*?";
Pattern p = Pattern.compile(tmpStr);
Matcher m = p.matcher(testStr);                // assume testStr is the article
while ( (m1.find()) ) {
         System.out.println("find");
}                    However , this code only help me to find some like " book " , " book! " , " !book " . But I also want to find some like "book " or " book" , since there aren't space before book or no space after book . How can I correct my code to do that ?
Thanks in advance

String tmpStr = "\\bbook\\b";

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