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我正在java中使用正則表達式提取日期提取器。問題是這個日期是20-05-2014,我的程序正在提取0-5-14。總之,我怎麼能得到我在檢查日期的第二個字符的角色?正則表達式:如何包含「如果」條件的字符
int count = 0;
String data = "HellowRoldsThisis20-05-2014. [email protected]@gmail.com";
String regexOfDate = "((?<=[0])[1-9]{2})|((?<=[12])[0-9])|((?<=[3])[01])\\.\\-\\_((?<=[0])[1-9])|((?<=[1])[0-2])\\.\\-\\_((?<=[2])[0-9]{4})"; \\THE PROBLEM
String[] extractedDate = new String[1000];
Pattern patternDate = Pattern.compile(regexOfDate);
Matcher matcherDate = patternDate.matcher(data);
while(matcherDate.find()){
System.out.println("Date "+count+"Start: "+matcherDate.start());
System.out.println("Date "+count+"End : "+matcherDate.end());
extractedDate[count] = data.substring(matcherDate.start(), matcherDate.end());
System.out.println("Date Extracted: "+extractedDate[count]);
}
如何繪製正則表達式? – Kyslik 2014-12-13 18:58:21