Substring capture To Write A list Of instances in A New Document

[Nick Rowe]

Hi Guys,

About my Program:
Im brand new to Java and this is further development for my first program. So far my program captures the data between two strings and stores the substring value within an array. Once all the documents have been read in from the folder and all instances are captured. They are then sorted within the array and printed in a new document.

What I need to do now:

Basically i need to know capture another value between two other strings and return it below the first set as the value is of a different type.

i need to return a value between a string beginning with the value "<$" and ending in "=", the problem is. I've tried testing the changes variable parameter in my Working existing document but it doesn't write anything once the change is made. Does this mean that i cannot use "$" symbol as a value?

below is my code, as mentioned this works fully for one set of values, Please can anyone help me im really struggling with this.

regards Nick

import java.io.BufferedReader;   
import java.io.File;   
import java.io.FileNotFoundException;   
import java.io.FileReader;   
import java.io.IOException;   
import java.util.ArrayList;   
import java.util.regex.Matcher;   
import java.util.regex.Pattern;   
import java.util.Collections;   
import java.util.List;   
import java.io.PrintWriter;   
import java.io.FileWriter;   
  
/** class to find string */  
public class Find {   
  
    BufferedReader br = null;   
  
    /** method to read html file line by line and return string to tore in array */  
    public Find(String fileName, String begin, String end,String whereToWrite) throws java.io.IOException {   
        try {   
            /** read in file */  
            String resourceline = null;   
            ArrayList<String> arrayList = new ArrayList<String>();   
            File myDir = new File("C:/Documents and Settings/Kieren McDonald/Desktop/Nick/Java/Test/resources");   
            if (myDir.exists() && myDir.isDirectory()) {   
                File[] files = myDir.listFiles();   
                for (int i = 0; i < files.length; i++) {   
                    br = new BufferedReader(new FileReader(files[i]));   
                    while ((resourceline = br.readLine()) != null) {   
                        resourceline = find(begin, end, resourceline);   
                        if (resourceline != null) {   
                            resourceline = resourceline.trim();   
                            arrayList.add(resourceline);   
  
                        }   
  
                    }  
                    System.out.println("/**This Is A List Of Includes Within The Component*/");					
                    sortAndPrint(arrayList);
                    System.out.println("/*******This Is The End Of The list Of Includes*******/");					
                    writeResults(arrayList, "C:\\Documents and Settings\\Kieren McDonald\\Desktop\\Nick\\Java\\Test\\filetest.txt");   
                }   
            } else {   
                System.out.println("This is not a directory");   
            }   
  
            /**  
             * declaring string identifiers for beginning and end of string  
             * aswel as one other line string to store the data between  
             */  
            /** while line is not equal to null then find 3 string values */  
        } catch (FileNotFoundException ex) {   
            ex.printStackTrace();   
        } finally {   
            br.close();   
        }   
    }   
  
    /** method to sort and print the array collection */  
    private void sortAndPrint(List<String> results) {   
        Collections.sort(results, String.CASE_INSENSITIVE_ORDER);   
        for (String resourceline : results) {   
            System.out.println(resourceline);   
        }   
    }   
  
    /** method to find the value between the beginning and end of a string  
     */  
    public String find(String beg, String end, String resourceline) {   
        /** match pattern to store string between strings and match to line */  
        Pattern p = Pattern.compile(beg + "(.*)" + end);   
        Matcher m = p.matcher(resourceline);   
        return m.find() ? resourceline.substring(m.start(1), m.end(1)) : null;   
    }   
  
    /** method to print the results of the array into a new document */  
    private void writeResults(ArrayList<String> arrayList, String filename) {   
        try {   
            PrintWriter writer = new PrintWriter(filename);   
  
            for (String resourceline : arrayList) {   
                writer.println(resourceline);   
            }   
            System.err.println("/***Your Data Has Been Written To The File Successfully***/");   
            writer.close();   
        } catch (Exception e) {   
            System.out.println("can't create output file \"" + filename + "\"");   
            e.printStackTrace();   
        }   
    }    
  
    /** main method to find the resource name calling */  
	public static void main(String[] args) throws IOException
    {   
       Find f = new Find("myDir", "<@dynamichtml", "@>", "C:\\Documents and Settings\\Kieren McDonald\\Desktop\\Nick\\Java\\Test\\filetest.txt");   
	}   
	 
	 

[David Newton]

Locking; continue in the other thread.

(And you're not "literally" brand new, because you've been posting Java questions for a couple of months.)