Read file and store the file into a string
i want to read the file and copy it to a string.
i wrote this code but don't know what to do next..
please help me urgent.....
File file_to_text = new File("c:\\wtgapp.xml");
String wtgapp_string=new String();
try
BufferedInputStream stream = new BufferedInputStream(new FileInputStream(file_to_text));
catch (FileNotFoundException file_error)
JOptionPane.showMessageDialog(null, "FILE READ ERROR", "READ ERROR!",JOptionPane.INFORMATION_MESSAGE );
System.exit(1);
}
BufferedReader reader = new BufferedReader(new FileReader(file_to_text));
try
while(reader.readLine() !=)
wtgapp_string = wtgapp_string+ reader.readLine();
System.out.println(wtgapp_string);
i did this..
but reader.readLine() != null
didn't work.
what shoud i write? to go to the end of file
no it is 16.00pm in here i live in TURKIYE istanbul :)
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(Urgent help needed) how to read txt file and store the data into 2D-array?
Hi, I have a GUI which allow to choose file from the file chooser, and when "Read file" button is pressed, I want to show the array data into the textarea.
The sample data is like this followed:
-0.0007 -0.0061 0.0006
-0.0002 0.0203 0.0066
0 0.2317 0.008
0.0017 0.5957 0.0008
0.0024 1.071 0.0029
0.0439 1.4873 -0.0003
I want my program to scan through and store these data into 2D array.
However for some reason, my source code issues errors, and I don't know what's wrong with it, seems to have a problem in StringTokenizer though. Can anybody help me?
Thanks in advance.
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.StringTokenizer;
public class FileReduction1 extends JFrame implements ActionListener{
// GUI features
private BufferedReader fileInput;
private JTextArea textArea;
private JButton openButton, readButton,processButton,saveButton;
private JTextField textfield;
private JPanel pnlfile;
private JPanel buttonpnl;
private JPanel buttonbar;
// Other fields
private File fileName;
private String[][] data;
private int numLines;
public FileReduction1(String s) {
super(s);
// Content pane
Container cp = getContentPane();
cp.setLayout(new BorderLayout());
// Open button Panel
pnlfile=new JPanel(new BorderLayout());
textfield=new JTextField();
openButton = new JButton("Open File");
openButton.addActionListener(this);
pnlfile.add(openButton,BorderLayout.WEST);
pnlfile.add(textfield,BorderLayout.CENTER);
readButton = new JButton("Read File");
readButton.addActionListener(this);
readButton.setEnabled(false);
pnlfile.add(readButton,BorderLayout.EAST);
cp.add(pnlfile, BorderLayout.NORTH);
// Text area
textArea = new JTextArea(10, 100);
cp.add(new JScrollPane(textArea),BorderLayout.CENTER);
processButton = new JButton("Process");
//processButton.addActionListener(this);
saveButton=new JButton("Save into");
//saveButton.addActionListener(this);
buttonbar=new JPanel(new FlowLayout(FlowLayout.RIGHT));
buttonpnl=new JPanel(new GridLayout(1,0));
buttonpnl.add(processButton);
buttonpnl.add(saveButton);
buttonbar.add(buttonpnl);
cp.add(buttonbar,BorderLayout.SOUTH);
/* ACTION PERFORMED */
public void actionPerformed(ActionEvent event) {
if (event.getActionCommand().equals("Open File")) getFileName();
if (event.getActionCommand().equals("Read File")) readFile();
/* OPEN THE FILE */
private void getFileName() {
// Display file dialog so user can select file to open
JFileChooser fileChooser = new JFileChooser();
fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
int result = fileChooser.showOpenDialog(this);
// If cancel button selected return
if (result == JFileChooser.CANCEL_OPTION) return;
if (result == JFileChooser.APPROVE_OPTION)
fileName = fileChooser.getSelectedFile();
textfield.setText(fileName.getName());
if (checkFileName()) {
openButton.setEnabled(false);
readButton.setEnabled(true);
// Obtain selected file
/* READ FILE */
private void readFile() {
// Disable read button
readButton.setEnabled(false);
// Dimension data structure
getNumberOfLines();
data = new String[numLines][];
// Read file
readTheFile();
// Output to text area
textArea.setText(data[0][0] + "\n");
for(int index=0;index < data.length;index++)
for(int j=1;j<data[index].length;j++)
textArea.append(data[index][j] + "\n");
// Rnable open button
openButton.setEnabled(true);
/* GET NUMBER OF LINES */
/* Get number of lines in file and prepare data structure. */
private void getNumberOfLines() {
int counter = 0;
// Open the file
openFile();
// Loop through file incrementing counter
try {
String line = fileInput.readLine();
while (line != null) {
counter++;
System.out.println("(" + counter + ") " + line);
line = fileInput.readLine();
numLines = counter;
closeFile();
catch(IOException ioException) {
JOptionPane.showMessageDialog(this,"Error reading File",
"Error 5: ",JOptionPane.ERROR_MESSAGE);
closeFile();
System.exit(1);
/* READ FILE */
private void readTheFile() {
// Open the file
int row=0;
int col=0;
openFile();
System.out.println("Read the file");
// Loop through file incrementing counter
try {
String line = fileInput.readLine();
while (line != null)
StringTokenizer st=new StringTokenizer(line);
while(st.hasMoreTokens())
data[row][col]=st.nextToken();
System.out.println(data[row][col]);
col++;
row++;
closeFile();
catch(IOException ioException) {
JOptionPane.showMessageDialog(this,"Error reading File",
"Error 5: ",JOptionPane.ERROR_MESSAGE);
closeFile();
System.exit(1);
/* CHECK FILE NAME */
/* Return flase if selected file is a directory, access is denied or is
not a file name. */
private boolean checkFileName() {
if (fileName.exists()) {
if (fileName.canRead()) {
if (fileName.isFile()) return(true);
else JOptionPane.showMessageDialog(null,
"ERROR 3: File is a directory");
else JOptionPane.showMessageDialog(null,
"ERROR 2: Access denied");
else JOptionPane.showMessageDialog(null,
"ERROR 1: No such file!");
// Return
return(false);
/* FILE HANDLING UTILITIES */
/* OPEN FILE */
private void openFile() {
try {
// Open file
FileReader file = new FileReader(fileName);
fileInput = new BufferedReader(file);
catch(IOException ioException) {
JOptionPane.showMessageDialog(this,"Error Opening File",
"Error 4: ",JOptionPane.ERROR_MESSAGE);
System.out.println("File opened");
/* CLOSE FILE */
private void closeFile() {
if (fileInput != null) {
try {
fileInput.close();
catch (IOException ioException) {
JOptionPane.showMessageDialog(this,"Error Opening File",
"Error 4: ",JOptionPane.ERROR_MESSAGE);
System.out.println("File closed");
/* MAIN METHOD */
/* MAIN METHOD */
public static void main(String[] args) throws IOException {
// Create instance of class FileChooser
FileReduction1 newFile = new FileReduction1("File Reduction Program");
// Make window vissible
newFile.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
newFile.setSize(500,400);
newFile.setVisible(true);
Java.lang.NullpointException
at FileReductoin1.readTheFile <FileReduction1.java :172>
at FileReductoin1.readFile <FileReduction1.java :110>
at FileReductoin1.actionPerformed <FileReduction1.java :71>
.1) Next time use the CODE tags. this is way too much unreadable crap.
2) The problem is your String[][] data.... the only place I see you do anything approching initializing it is
data = new String[numLines][];I think you want to do this..
data = new String[numLines][3];anyway that's why it's blowing up on the line
data[row][col]=st.nextToken(); -
Export data in CSV and store the file in local drive
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Hi,
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Post code: BA1 74E
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Post code: BA1 74E
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int CustomerNo;
String Postcode;
String teleNo;
Date lastModified;
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} catch (FileNotFoundException e) {
e.printStackTrace();
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Scanner scanner2 = new Scanner(line);
scanner2.useDelimiter("\\s*:\\s*");
String description = scanner2.next();
*// here is where i am struggling. i don't know how to get the information after the : sign*
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Hi ,
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The record starts with 'ST*' and ends with 'SE*'.
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ISA*00* *00* *ZZ*043000096820 *ZZ*2156833510 *131202*0710*U*00401*000001204*0*P*>\ ignore first 2 lines
GS*RA*043000096820*2156833510*131202*0710*1204*X*003020\
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CREATE OR REPLACE package body p1 is
Function parse_spec(p_str varchar2) return t_str_nt is
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l_out_file utl_file.file_type;
l_lin varchar2(200);
field1 number(9);
field2 varchar2(10 byte);
field3 varchar2(15 byte);
field4 varchar2(15 byte);
field5 varchar2(20 byte);
field6 varchar2(20 byte);
field7 varchar2(20 byte);
field8 varchar2(9 byte);
field9 varchar2(15 byte);
field10 varchar2(5 byte);
l_item_nt t_str_nt:=t_str_nt();
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IF utl_file.is_open(l_out_file) THEN
LOOP
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end if;
end loop;
utl_file.fclose(l_out_file);
exception
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end;I would not use regular expressions for parsing as it is CPU intensive - and standard string processing suffices.
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Basic approach:
SQL> create or replace type TStrings as table of varchar2(4000);
2 /
Type created.
SQL> -- create a parser that tokenises a string
SQL> create or replace function Tokenise(
2 csvLine varchar2,
3 separator varchar2 default ',',
4 enclosedBy varchar2 default null
5 ) return TStrings is
6 strList TStrings;
7 str varchar2(32767);
8 i integer;
9 l integer;
10 enclose1 integer;
11 enclose2 integer;
12 encloseStr varchar2(4000);
13 replaceStr varchar2(4000);
14
15 procedure AddString( line varchar2 ) is
16 begin
17 strList.Extend(1);
18 strList( strList.Count ) := Replace( line, CHR(0), separator );
19 end;
20
21 begin
22 strList := new TStrings();
23
24 str := csvLine;
25 loop
26 if enclosedBy is not null then
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28 enclose1 := InStr( str, enclosedBy, 1 );
29 enclose2 := InStr( str, enclosedBy, 2 );
30
31 if (enclose1 > 0) and (enclose2 > 0) and (enclose2 > enclose1) then
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33 encloseStr := SubStr( str, enclose1, enclose2-enclose1+1 );
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36 -- and remove the enclosed quotes
37 replaceStr := Replace( replaceStr, enclosedBy );
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39 str := Replace( str, encloseStr, replaceStr );
40 end if;
41 end if;
42
43 l := Length( str );
44 i := InStr( str, separator );
45
46 if i = 0 then
47 AddString( str );
48 else
49 AddString( SubStr( str, 1, i-1 ) );
50 str := SubStr( str, i+1 );
51 end if;
52
53 -- if the separator was on the last char of the line, there is
54 -- a trailing null column which we need to add manually
55 if i = l then
56 AddString( null );
57 end if;
58
59 exit when str is NULL;
60 exit when i = 0;
61 end loop;
62
63 return( strList );
64 end;
65 /
Function created.
SQL>
SQL>
SQL> declare
2 ediDoc varchar2(32767) :=
3 'ISA*00* *00* *ZZ*043000096820 *ZZ*2156833510 *131202*0710*U*00401*000001204*0*P*>\GS*RA*043000096820*2156833510*131202*0710*1204*X*003020\ST*820*000041031\BPR*X*270*C*ACH*PPD*01*101036669***9101036669**01*031000053*DA*00000008606086714*131202\TRN*1*101036661273032\DTM*007*131202\N1*1U*BPS\N1*BE*MICHAEL DRAYTON*34*159783633\N1*PE*BPS*ZZ*183383689C2 ABC\N1*PR*ABC TREAS 310\SE*9*000041031\ST*820*000041032\BPR*X*686*C*ACH*PPD*01*101036669***9101036669**01*031000053*DA*00000008606086714*131202\TRN*1*101036661273034\DTM*007*131202\N1*1U*BPS\N1*BE*SAMIA GRAVES*34*892909238\N1*PE*BPS*ZZ*184545710C5 ABC\N1*PR*ABC TREAS 310\SE*9*000041032\';
4
5 lines TStrings;
6 tokens TStrings;
7 begin
8 -- split EDI string into lines
9 lines := Tokenise( ediDoc, '\' );
10
11 -- process line and extract fields
12 for i in 3..lines.Count loop
13 dbms_output.put_line( '***********************' ) ;
14 dbms_output.put_line( 'line=['||lines(i)||']' );
15 tokens := Tokenise( lines(i), '*' );
16
17 for j in 1..tokens.Count loop
18 dbms_output.put_line( to_char(j,'00')||'='||tokens(j) );
19 end loop;
20 end loop;
21 end;
22 /
line=[ST*820*000041031]
01=ST
02=820
03=000041031
line=[BPR*X*270*C*ACH*PPD*01*101036669***9101036669**01*031000053*DA*00000008606086714*131202]
01=BPR
02=X
03=270
04=C
05=ACH
06=PPD
07=01
08=101036669
09=
10=
11=9101036669
12=
13=01
14=031000053
15=DA
16=00000008606086714
17=131202
line=[TRN*1*101036661273032]
01=TRN
02=1
03=101036661273032
<snipped> -
How do I read from a file and store the information in an array?
Here is my problem:
I am going to have to use a bufferedReader to read a file containing information on 10 vehicles. And after I read that file I want to store the info in Vehicle [] V.
Where should I start?
Thanks
SteveThank you for the quick response.
As of right now our code is the same. Now I have to "parse" the information. What exactly do you mean?
My code is as follows:
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System.out.print(" Token: " + tokenArray);
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Is that what you mean by parsing?
I am not quite sure what e slpit(" ") is doing. Is there a better way?
And just to make sure I am understanding my own code, I am storing the information from the br in tokenArray. Followed by a series of print statements which output the info.Correct?
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Steve -
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I want to do the below task using powershell script only.
I have 2 csv files and I want to compare those two files and I want to store the comparision result to 3rd csv file. Please look at the follwingsnap:
This image is csv file only.
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By
A Path finder
JoSwa
If a post answers your question, please click "Mark As Answer" on that post and "Mark as Helpful"
Best Online JournalNot certain this is what you're after, but this :
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should do what you're looking for, or give you enough to edit it to your exact need.
I've assumed that the dbexcel.csv and liveexcel.csv files live in the root of c:\ for this, that they include the header information, and that the outputexcel.csv file will be saved to the same place (including headers). -
Stage tab delimited CSV file and load the data into a different table
Hi,
I pretty new to writing PL/SQL packages.
We are using Application express for our development. We get CSV files which is stored as a BLOB content in a table. I need to write a trigger that would get executed once the user the uploads the file and parse thru the Blob content and upload or stage the data in a different table.
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This is slightly unusual but at the same time easy to solve. You can read through a blob using the dbms_lob package, which is one of the Oracle supplied packages. This is presumably the bit you are missing, as once you know how you read a lob the rest is programming 101.
Alternatively, you could write the lob out to a file on the server using another built in package called utl_file. This file can be parsed using an appropriately defined external table. External tables are the easiest way of reading data from flat files, including csv.
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All of what I have described is documented functionality, assuming you are on 9i or greater. But you didn't provide a version so I can't provide a link to the documentation ;)
HTH
Chris -
Save data in a file and email the file
Dear all,
I have 2 vi files:
1. one vi file can store data into a file when it runs and stopped
2. another vi can send a file out through email when it is run.
Is it possible for me to run the first vi and stop after one hour (to store data into A file), then run the second vi file and stop (to send A file through email), and then run the first vi again immediately after running the second vi? This is because I need to send out my data saved hourly through email and get my 1st vi to continue running through out the day.
Due to the file path for my first vi and the second vi are the same, I keep getting error as below when either 1 vi is not stopped.
Error 5 occurred at Open/Create/Replace File in Write Spreadsheet String.vi->Write To Spreadsheet File (DBL).vi
Please advice. Thanks.
KimDear Ravens,
I tried to kill (remove) the event structure from my earlier code, but as I run it, I get the same error again- error 5.
I also tried to put time out value 200 at the timenode at the upper left of the event structure but the email part just never executed.
I searched thru the forum and found a several examples on state machine as attached. I tried the first attachment for my program but obviously I used the wrong one as you adviced. As for the other state machine examples that I downloaded, I couldn't figure out how to apply them for my case correctly. Can you advcice how can I implement state machine to get the results tat I need?... Pls gv me some clearer hints?
Attachments:
QueuedStateMachineWithEvents.vi 49 KB
StandardStateMachine_2MOD.vi 19 KB
JKI State machine.vi 75 KB -
How to use cfdocument create a PDF file and save the file in server?
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I want to use cfdocument to create a PDF file and save it in
the server for other people to download,can you give me a idea how
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MarkHi
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Give the physical path to the filename. You have write
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