StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PORegular Expressions to match an <a> tag
primarykey
Id
8018180
data
AcceptedAnswerId
8023045
AnswerCount
4
ClosedDate
CommentCount
5
CommunityOwnedDate
CreationDate
2011-11-05T04:24:54.583
FavoriteCount
1
LastActivityDate
2011-11-05T20:30:14.263
LastEditDate
2011-11-05T20:30:14.263
LastEditorUserId
505088
OwnerUserId
347395
ParentId
0
PostTypeId
1
Score
0
ViewCount
260
LastEditorDisplayName
text
Body
I am writing a small java program for a class, and I can't quite figure out why my regex isn't working properly. In the special case of having 2 tags on the same line that is read in, it only matches the second one. Here is a link that has the regex included, along with a simple set of test data: <a href="http://regexpal.com/?flags=&regex=%5CB%3Ca.%2ahref=%28?%3a%27%7C%22%29%28http://%28?%3a%5BA-Za-z0-9%5C.%5D%2b%29%28?%3a%5BA-Za-z0-9/%5D%2b%5C.%28?%3ahtml%7Chtm%29%29?%29%28?%3a%27%7C%22%29%5B%5E%3E%5D%2a%3E%5Ba-zA-Z0-9%5D%2b%3C/a%3E%5CB&input=%3Chtml%3E%0A%3Chead%3E%0A%3C/head%3E%0A%3Cbody%3E%0A%3Ca%20href=%22http://www.google.com%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://www.google.com/index.html%22%3EGoogle%3C/a%3E%3Ca%20href=%22http://www.google.com/index.htm%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://www.google.com/index.php%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://google.com%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://google.com/index.html%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://google.com/index.htm%22%3EGoogle%3C/a%3E%0A%3Ca%20href=%22http://google.com/index.php%22%3EGoogle%3C/a%3E%0A%3C/body%3E%0A%3C/html%3E" rel="nofollow">Regex Test Link</a>. In my java program I have the following code: <pre><code>Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE); String[] results; System.out.println(p.toString()); Matcher m = null; while((line = input.readLine()) != null) { m = p.matcher(line); while(m.find()) { System.out.println("Matches: " + m.group(1)); } } </code></pre> The goal is to extract the href value, as long as it starts with http://, the website ends in either no page (like <a href="http://www.google.com" rel="nofollow">http://www.google.com</a>) or ends in index.htm or index.html (like <a href="http://www.google.com/index.html" rel="nofollow">http://www.google.com/index.html</a>). My regex works for every case of the above, but doesnt match in the special case of 2 tags that are on the same line. Any help is appreciated.
Tags
<java><html><regex>
Title
Regular Expressions to match an <a> tag
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USDavid Heffernan
UserOwnerUserId
1. USEric Reynolds
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
2. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
3. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
3. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PORegular Expressions to match an <a> tag
 UserUserId
 USbdonlan
 VoteTypeVoteTypeId
 VTFavorite
CommentsPostId

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.