字符串不包含数字

public static boolean judgeContainNumber(String str){
    Pattern p = Pattern.compile(".*\\d+.*");
    Matcher m = p.matcher(str);
    if (m.matches()){
        System.out.println("有数字");
        return true;
    }else {
        System.out.println("没有数字");
    }
    return false;
}