Ich extrahiere einige Zeichenfolgen aus mehreren Dokumenten mit regulären Ausdrücken. Ich stecke bei diesem "StackOverflowError" fest, der für einen bestimmten regulären Ausdruck steht. Ohne diesen regulären Ausdruck wird das Programm reibungslos ausgeführt.

Mein Code:

 package com.gauge.ie.Annotator;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.print.attribute.Size2DSyntax;

import org.apache.commons.io.FilenameUtils;
import org.apache.uima.util.FileUtils;


public class RecursiveFileDisplay 
{

    static List<String> misclist=new ArrayList<String>();
    static List<String> list=new ArrayList<String>();
    static LinkedHashMap<String,String> authormap=new LinkedHashMap<>();
    static List<String> random=new ArrayList<String>();
    static List<String> benchlist=new ArrayList<String>();
    static LinkedHashMap<String,String> benchmap=new LinkedHashMap<>();
    static List<String> misc1list=new ArrayList<String>();
    String csvfile="/home/gauge/Documents/Docs/madras.csv";



    FileWriter fw;

    public RecursiveFileDisplay()throws IOException 
    {
        fw=new FileWriter("/home/gauge/Documents/Docs/supremecourt.csv",true);
        // TODO Auto-generated constructor stub
    }

    public static void main(String[] args) throws Exception
    {
        RecursiveFileDisplay rsd=new RecursiveFileDisplay();
        File currentDir = new File("/home/gauge/Documents/Docs/SampleData/SupremeCourt"); 
        rsd.readFilesFromDirectory(currentDir);
        System.out.println(benchlist.size());
        System.out.println(list.size());
        System.out.println(random.size());
        rsd.writeCSV();
    }
    public void writeCSV()throws IOException 
    {

        for(String str:list)
        {
            fw.append(str);
            fw.append("\n");
            fw.flush();
        }
        System.out.println("Csv file is done!");

    }
    public  void readFilesFromDirectory(File dir) 
    {
        try
        {
            int i=0;
            Pattern p1=Pattern.compile("(Author):(.*)");
            Pattern p=Pattern.compile("(Bench:)(.*)");
            Pattern p2=Pattern.compile("JUDGMENT(.*?)J[.]");
            Pattern p3=Pattern.compile("(([H|h]on)|(HON)).*((ble)|BLE)(.*)");
            //Pattern p4=Pattern.compile(",\\s*([^,]+),[^,]*\\b(J|JJ)\\.");//\s\w*(?=\w*[,]\sJ[.]*\b)
            Pattern p5=Pattern.compile("\\s\\w*(?=\\w*[,]\\sJ[.]*\\b)");
            Pattern p4=Pattern.compile("\\w*(?=\\w*[,]*\\s*((JJ)|(L.J)|(C.J)|(J))[.]\\s\\b)");
            Pattern p6=Pattern.compile("(BENCH:)((.|\\n)*)(BENCH)((.|\\n)*)(CITATION)");
            File[] listfiles=dir.listFiles();
            for(File file:listfiles)
            {
                if(file.isFile())
                {
                String str="";
                String line="";
                BufferedReader br=new BufferedReader(new FileReader(file));
                while((line=br.readLine())!=null)
                {
                    str+=line+"\n";
                }
                Matcher match=p.matcher(str);
                Matcher match1=p1.matcher(str);
                Matcher match2=p2.matcher(str);
                Matcher match3=p3.matcher(str);
                Matcher match4=p4.matcher(str);
                Matcher match5=p5.matcher(str); 
                Matcher match6=p6.matcher(str);

                 if(match.find())
                 {
                    if(match1.find())
                    {
                        list.add(file.toString()+"\t"+match.group(2)+"\t"+match1.group(2));         //filename,   judgename    ,authorname
                        System.out.println(match1.group(2));
                    }
                    else
                    {
                        list.add(file.toString()+"\t"+match.group(2)+"\t"+" ");
                        System.out.println(match.group(2));
                    }
                 }
                 else if(match1.find())
                 {
                        list.add(file.toString()+"\t"+" "+"\t"+match1.group(2));
                 }
                 else if(match2.find())
                 {
                     list.add(file.toString()+"\t"+match2.group()+"\t"+" ");
                 }
                 else if(match3.find())
                 {
                     list.add(file.toString()+"\t"+match3.group()+"\t"+" ");
                 }
                 else if(match4.find())
                 {
                    //do nothing
                 }
                 else if(match5.find())
                 {
                     list.add(file.toString()+"\t"+match5.group()+"\t"+" ");
                     System.out.println(file.toString());
                 }
                 else if(match6.find())
                 { 
                     System.out.println("lalalalal");
                 }
                 else
                 {
                        misclist.add(file.toString());                          //list of documents which have no Judgenames
                        String name = UUID.randomUUID().toString();
                        PrintWriter pw=new PrintWriter("/home/gauge/Documents/Docs/Misc"+"/"+name);
                        pw.write(str);
                        pw.flush();
                 }

                }
                else if(file.isDirectory())
                {
                    readFilesFromDirectory(file.getAbsoluteFile());
                    System.out.println("recursion");
                }
            }   
        }   
        catch(StackOverflowError soe)
        {
            soe.printStackTrace();
            System.err.print(soe);
        }
        catch (Exception e)
        {
            e.printStackTrace();
            System.err.print(e);
        }
    }

}

wenn ich das Muster p6 entferne, wird kein Fehler angezeigt.

Der StackTrace sieht wie folgt aus:

at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4658)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4785)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4717)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4568)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3777)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4604)
java.lang.StackOverflowError