用随机字符串内的正则表达式匹配日期

Question

I am trying to do this in Java :

I receive this kind of string

"12/07/2004dddsss12/10/2010ñrrñrñr10/01/2000ksdifjsdifffffdd04/04/1998"

Then I have to find one or more dates inside that string, date format: dd/mm/yyyy

Finally I have to copy to another string dates matched: "12/07/2004 12/10/2010 10/01/2000 04/04/1998"

PD: I'm using this website http://regexpal.com/ to test if works. I tried some website regex and anyone worked for me.

Answer 1

You can separate the validity of the date with the extracted content.

To extract the dates:

String regex = "\\d{2}/\\d{2}/\\d{4}";

Check here at fiddle: http://fiddle.re/fa0bf

Code:

 String input = "12/07/2004dddsss12/10/2010ñrrñrñr10/01/2000ksdifjsdifffffdd04/04/1998";
    String regex = "\\d{2}/\\d{2}/\\d{4}";
    Pattern pattern = Pattern.compile(regex);

    Matcher matcher = pattern.matcher(input);
    while (matcher.find()) {
        System.out.println(matcher.group());
    }

Gives,

12/07/2004
12/10/2010
10/01/2000
04/04/1998