Build a Stack Exchange Scraper

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Solution{

	
	public static void sumarry(String string, ArrayList<String> arrSummary) {
		/* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
		
		String regexOnlyTag = "[<][\\W]*div[\\W]*class[\\W]*=[\\W]*summary[\\W]*[>][\\W]*[<][\\W]*[\\w]*[\\W]*[>][\\W]*"
				+ "[<][\\W]*+[a][\\W]*href=\"[\\W]*[^>][^<]+";
		String regexHTML = "[>][^>]*[<][\\W]*[/][\\W]*[a|b|h|H][\\w]{0,1}[\\W]*[>]";
		String regexATag = "[\\[]";
		Pattern tagPattern = Pattern.compile(regexOnlyTag);
		Pattern htmlPattern = Pattern.compile(regexHTML);
		Set<String> tagSet = new HashSet<String>();
		
			Matcher tagMatcher = tagPattern.matcher(string);
			Matcher htmlMatcher = htmlPattern.matcher(string);
			while(tagMatcher.find())
			{
				String temp = string.substring(tagMatcher.start(), tagMatcher.end());
				temp = temp.trim();
				String[] temparr = temp.split(">");
				String tempNew = temparr[temparr.length-1].trim();
				arrSummary.add(tempNew);
			}
	}

	public static void main(String[] args) throws IOException {
		/* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */

		ArrayList<String> arrQuestionId = new ArrayList<String>();
		ArrayList<String> arrSummary = new ArrayList<String>();
		ArrayList<String> arrTime = new ArrayList<String>();

				Scanner in = new Scanner(System.in);
		String string;
		String regexOnlyTag = "[<][\\W]*div[\\W]*class=\"question-summary\"[^>]*";
		String regexHTML = "id[^>]*";
		String regexATag = "=";

		String regexTime = "asked[\\W]*<[\\W]*span[^/]*";
		String regexExactTime = ">[\\W]*[^<]*";

		Pattern tagPattern = Pattern.compile(regexOnlyTag);
		Pattern htmlPattern = Pattern.compile(regexHTML);

		Pattern timePattern = Pattern.compile(regexTime);
		Pattern exactTimePattern = Pattern.compile(regexExactTime);

		StringBuffer strbuff = new StringBuffer();
		
				while( in.hasNextLine())
				{
					string = in.nextLine();
					strbuff.append(string + "\n");
				}
				string = strbuff.toString();
		Matcher tagMatcher = tagPattern.matcher(string);

		while(tagMatcher.find())
		{
			String temp = string.substring(tagMatcher.start(), tagMatcher.end());
			temp = temp.trim();
			Matcher htmlMatcher = htmlPattern.matcher(temp);
			while(htmlMatcher.find())
			{
				String quetionId = temp.substring(htmlMatcher.start(), htmlMatcher.end());
				String[] idArr = quetionId.split(regexATag);
				idArr[1] = idArr[1].replaceAll("\"", "").trim();
				String[] id = idArr[1].split("-");
				arrQuestionId.add(id[2].trim());
			}
		}

		String summaryString = string;
		sumarry(summaryString, arrSummary);
		
		String timeString = string;
		Matcher timeMatcher = timePattern.matcher(timeString);
		while(timeMatcher.find())
		{
			String time = timeString.substring(timeMatcher.start(), timeMatcher.end());
			Matcher timeMatcher2 = exactTimePattern.matcher(time);
			if(timeMatcher2.find())
			{
				String exactTime = time.substring(timeMatcher2.start(), timeMatcher2.end());
				exactTime = exactTime.replaceAll("[<|>]", "");
				exactTime = exactTime.trim();
				arrTime.add(exactTime);
			}
		}
		
		for (int i = 0; i < arrQuestionId.size(); i++)
			System.out.println(arrQuestionId.get(i)+";"+arrSummary.get(i)+";"+arrTime.get(i));
	}
}