Java笔记

1、查找字符串中，两个关键词之间的字符

 

        String regex = "总分(.*)分";

        Pattern pattern = Pattern.compile(regex);

        Matcher matcher = pattern.matcher(title);

        while (matcher.find()) {

    practice.setTotalScore(new Double(matcher.group(1)));

        }

2、sun官网下载各版本jdk地址

http://www.oracle.com/technetwork/java/archive-139210.html

 

3、正则中文

/^[\u4E00-\u9FA5]{2,20}$/