Searching through a folder and checking all files for text inside.
I am new to java and I am having a problem with some code. I am trying to create a java GUI whereby users enter a piece of text to search and a folder to search. The code will then search iteratively through each file for the text and append the results in a jtextarea. My search works for just one file if I exclude the loop through the files. When looping it does not produce any errors but I receive no output. My code is:
Code:
package searchfile;
import java.io.*;
import javax.swing.*;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.text.DateFormat;
import java.util.Date;
import java.util.ArrayList;
import java.util.List;
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
//Runs the method to search through the files in a folder, this does not work yet!
DoSearchFolder();
}
/*Method to search iteratively through a folder and check all files for
text search criteria - This is not working but yet produces no errors!
*/
public void DoSearchFolder(){
try {
/*This bit appears to work as I get the message if the directory
does not exist */
File folder = new File(fileLocation.getText());
String[] directory = folder.list();
if (directory == null){
JOptionPane.showMessageDialog(null, "This is not a directory or the directory does not exist");
} else {
/*From hear is where the problems seems to be, if only I got
errors! */
for (int i=0; i<directory.length; i++){
String listFilenames = directory[i];
Pattern pattern =
Pattern.compile(searchText.getText());
Matcher matcher =
pattern.matcher(fromFile(listFilenames));
boolean found = false;
while (matcher.find()) {
String group = matcher.group();
int start = matcher.start();
int end = matcher.end();
String endMatch = Integer.toString(end);
String startMatch = Integer.toString(start);
outputScreen.append("I found the text " + group + " starting at character " + startMatch + " and ending at character " + endMatch + " " + "from file " + listFilenames);
found = true;
}
if(!found){
JOptionPane.showMessageDialog(null, "No Match Found");
}}}
} catch (IOException e) {
}}
}
I have only included the code I am having
I have only included the code I am having issues with and removed the rest. Any help would be greatly appreciated.
Re: Searching through a folder and checking all files for text inside.
Most of us will generally move on rather than try to figure out unformatted code - indentations are important. An SSCCE is also helpful in these cases.
Don't you hate code that's not properly indented? Making it [indenting] part of the syntax guarantees that all code is properly indented...
G. van Rossum(designer of the Python)
