Read a file store in a Blob field

hi friends
has anyone read a file in a table field like using blob
fieldtype in Oracle.anybody got the java code to do it. please
help.
thanks,
aruni.

See item #2 in my reply #11 at your original post (see link shown below):
http://forum.java.sun.com/thread.jsp?thread=425174&forum=48&message=1893475
and my reply #13 which contains a link to more info on how to read/write Oracle LOB.
;o)
V.V.

Similar Messages

To store Reports in Blob fields

Hi,
I need to generate report(PDF) and to keep it in a Blob field.
Somebody has some idea? Thanks

HuaMin Chen wrote:
Try it like
CREATE TABLE po_xml_tab(
poid NUMBER(10),
poDoc XMLTYPE
XMLType COLUMN poDoc
STORE AS CLOB (
TABLESPACE lob_seg_ts
STORAGE (INITIAL 4096 NEXT 4096)
CHUNK 4096 NOCACHE LOGGING
);No.
CLOB storage is deprecated.
Binary XML should be used now, and it's the default starting with 11.2.0.2 (so it applies for XE).

How to store images in BLOB field in MySql database using java

Hi....
Currently am able to store character string into BLOB using byte array....in MySql.
but i cannot store images or pictures.......
to do this.........please help me out...............
Thanx..........:)Bye...........

Hello,
I have done this for Oracle but it should be similar in MySQL also. Try reading thru these links below. Mail us if you have succeeded or not.
http://forum.java.sun.com/thread.jspa?forumID=48&threadID=654086
http://forum.java.sun.com/thread.jspa?forumID=48&threadID=384768
http://forum.java.sun.com/thread.jspa?forumID=48&threadID=549705
Thanks and regards,
Pazhanikanthan. P

How can i store image into blob field in oracle express ??

Hi
am using oracle express *(2.1)* , i am devloping a small system , we have to store an image in blob filed in a table, we have to create a form which allow the user to store the image in the table and to generate a report contains the image
any note's please
tahnk's in advance
sam
Edited by: user485341 on Dec 22, 2008 1:28 AM

hi Andy
this is the code for download
create or replace PROCEDURE download_my_file(p_file in number) AS
v_mime VARCHAR2(48);
v_length NUMBER;
v_file_name VARCHAR2(2000);
Lob_loc BLOB;
BEGIN
SELECT MIME_TYPE, BLOB_CONTENT, FILE_NAME,DBMS_LOB.GETLENGTH(BLOB_CONTENT)
INTO v_mime,lob_loc,v_file_name,v_length
FROM A_IMAGES
WHERE IMAGE_ID = p_file;
owa_util.mime_header( nvl(v_mime,'application/octet'),FALSE );
-- set the size so the browser knows how much to download
htp.p('Content-length: ' || v_length);
-- the filename will be used by the browser if the users does a save as
htp.p('Content-Disposition: attachment;
filename="'||replace(replace(substr(v_file_name,instr(v_file_name,'/')+1)
,chr(10),null),chr(13),null)|| '"');
-- close the headers
owa_util.http_header_close;
-- download the BLOB
wpg_docload.download_file( Lob_loc );
end download_my_file;
thank's

How to store file content in BLOB field MySql database using java

Hi!
i want to store the file content in a BLOB field in MySql database using java.
Please help me out..........
thanx in advance...
bye

i stored images in db, and retrieved them. like that cant i store pdf file in db, and retrieve it back using oracle db?
Plz help me out how to put a file in db. i need complete code. thanks in advance.

BLOB fields again...

Hello,
I'm developing an application which has a database table with blob fields. I've had many problems recently with this type of field, the most undesired being that LOV fields doesn't work in pages with BLOB fields.
As a workaround, I've done a second page just to upload the files to the two blob fields. It worked, but now I needed to handle errors with different kind of files and their mime-types. I was happy to see that JHeadstart provided three auxiliary fields to store the filename, size and mime-type. It worked too, it saved all that information correctly, but:
1. When "downloading" the file, apparently the mime-type is not set.
2. Just after the file is uploaded, I can see in the main table that the attributes were saved correctly, but as soon as I close the browser and open a new session, I have errors. I have two blob columns; in the first, it doesn't shows the filename, but the file size, in the second blob column, it doesn't shows the file name, but the blob mime-type!
Does anybody has any similiar problem?
Thanks,
Eduardo

Hello Peter,
Thanks for the confirmation that the BLOB / LOV issue is a bug.
About my another problem with HTTP headers while downloading files from blob fields, you are right, I need to be more specific. In my first try, this "second page" just to upload the files was a simple UIX page, not generated by JHeadstart. I saw this could be a little difficult to handle, so I discarded it.
Now, I created a second VO with the two blob fields and all other attributes read-only, and put it as a group in JHeadstart configuration file to generate the page automatically. I __disabled all multi-row operations__ so the blob fields are rendered in the main table as hyperlinks to be downloaded with their respective filenames set, as it was saved in the database field in the upload.
But in my tests, if I save other files than images, the browser doesn't open it correctly. So I opened the UIX JHeadstart generated page, where I see something like this:
<link destination="DownloadFile.do?pageTimeStamp=ignore&model=TsacContratoUIModel&binding=TsacContratoDocumentoContrato&rowKeyStr=${uix.current.rowKeyStr}&attachment=${TsacContratoDocumentoContratoTamarq}" text="${ui:cond(uix.current.TsacContratoDocumentoContratoTamarq!=null,uix.current.TsacContratoDocumentoContratoTamarq,'DocumentoContrato')}" rendered="${uix.current.TsacContratoDocumentoContrato!=null}"/>
Clearly I can see two things:
1. attachment=${TsacContratoDocumentoContratoTamarq}. I put uix.current inside, as we are in a table, and it worked fine after that.
2. The hyperlink doesn't have the mimeType parameter set, but the respective DownloadFile.do class uses it to set the correct mimeType header. I put it by hand: &mimeType=${uix.current.TsacContratoImagensViewDocumentoContratoMimetype}"
I verified that all the three attributes used to save file information are correct and exists in the VO, in the entity object and in the table, and I've also tested it in the Application Module and also, they save all the information correctly, so I don't think the problem is here, but in the page generation.
Thanks for your help. JHeadstart is a great and very interesting project despite some minor bugs that still exists.
Eduardo

APEX- How to open world document (and other files) stored in a blob column?

Hi,
I have an application developed in Oracle Apex 3.2.1 and RDBMS Oracle 9.2.0.8 (SUN SOLARIS SPARC 64 BITS).
I have a table called BAC_ARQUIVO, with the following structure:
CREATE TABLE BAC_ARQUIVO
(NAME VARCHAR2(4000), /* Name of the file stored in BLOB column */
SUBJECT VARCHAR2(4000), /* A brief description about this file stored */
ID NUMBER, /* An identification of this file - It´s a PK column of this table*/
BLOB_CONTENT BLOB, /* Blob field that store diferent kind of files - XLS, DOC, PPT, PDF, EXE, ZIP, etc);
MIME_TYPE VARCHAR2(4000) /* Identification about which kind of file is stored on BLOB field */
The field BLOB_CONTENT of this table can store:
- Executable files;
- MS-World Documents (DOC);
- Zip Files (ZIP);
- Ms-Excel Files (XLS);
- Ms-Powerpoint files (PPT);
- Adobe documents (PDF);
Actually, in this APEX application, i have developed a interactive Report in which the user can download these files to desktop without problems.
But now, my user would like to know if it´s possible that APEX application can OPEN some of these files stored on this BLOB column WITHOUT download it.
My user would like to see a hiperlink (or button) that, if pressed/acessed, can open a new page (or a page inside application) with the document. He doesn´t need to edit this oppened file. He only wants to see it.
For example, if the file stored in the blob column is ms-word type , so the application will open a MS-WINDOWS application with these file.
Is it possible?
I saw in this forum that it´s possible to open a file stored on "/i/" directory, but i need to open the file stored in BLOB column. I don´t want to store the file in operational system of the server.
Could any one demonstrate to me how it could be done?
Best regards,
Sergio Coutinho

Hi Sergio,
This link might be helpful:
http://www.oracle.com/webfolder/technetwork/tutorials/obe/db/apex/r31/apex31nf/apex31blob.htm
Also refer the BLOB Download Format Mask :
{message:id=9716335}
Here I have given the format mask for APEX 4.0, which will slightly differ for 3.2.1 and proposed changes
in the format mask are:
1) Format Mask: DOWNLOAD
2) Content Disposition: Inline
This will be achieved with it:
>
But now, my user would like to know if it´s possible that APEX application can OPEN some of these files stored on this BLOB column WITHOUT download it.
My user would like to see a hiperlink (or button) that, if pressed/acessed, can open a new page (or a page inside application) with the document. He doesn´t need to edit this oppened file. He only wants to see it.
>
Hope it helps!
Regards,
Kiran

Unable to read multiple files in BODS

hi all,
i am unable to read multiple files [with same format of fields] using wild card characters in file name.
scenario:
i have 2 files: test1.xlsx & test2.xlsx
in the excel file format, for the file name column, i have given test*.xlsx.
and done the direct mapping to target column.
but when i run the job i am getting below error.
at com.acta.adapter.msexceladapter.MSExcelAdapterReadTable.ReadAllRows(MSExcelAdapterReadTable.java:1242)
at com.acta.adapter.msexceladapter.MSExcelAdapterReadTable.readNext(MSExcelAdapterReadTable.java:1285)
at com.acta.adapter.sdk.StreamListener.handleBrokerMessage(StreamListener.java:151)
at com.acta.brokerclient.BrokerClient.handleMessage(BrokerClient.java:448)
at com.acta.brokerclient.BrokerClient.access$100(BrokerClient.java:53)
at com.acta.brokerclient.BrokerClient$MessageHandler.run(BrokerClient.java:1600)
at com.acta.brokerclient.ThreadPool$PoolThread.run(ThreadPool.java:100)
please let me know if there is any solution to this.
regards,
Swetha

Hi,
i just copied a xlsx file with 3 different names (Test_Data.xlsx, Test_1.xlsx, Test_2.xlsx) and tried with below options and it worked for me.
Note: I tried on the same OS and DS 4.1 SP2(14.1.2.378)versions. In Linux File names are case sensitive.

Error while trying to store PDF in Oracle's BLOB field

Hi folks!
I'm having problems while trying to store PDF file in a BLOB field of an Oracle table
This is the message code:
Exception in thread "main" java.sql.SQLException: Data size bigger than max size for this type: 169894
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.ttc7.TTCItem.setArrayData(TTCItem.java:95)
at oracle.jdbc.dbaccess.DBDataSetImpl.setBytesBindItem(DBDataSetImpl.java:2414)
at oracle.jdbc.driver.OraclePreparedStatement.setItem(OraclePreparedStatement.java:1134)
at oracle.jdbc.driver.OraclePreparedStatement.setBytes(OraclePreparedStatement.java:2170)
at vgoactualizacion.Main.main(Main.java:84)
This is the piece of code i'm using:
Assuming conn = conection to Oracle 10g Database ( it's working )
String miProcedimientoAlmacenado = "{ call package_name.update_client(?,?, ?) }";
CallableStatement miComando = conn.prepareCall(miProcedimientoAlmacenado);
miComando.setString(1,miClienteID ); //first parameter : IN
               //second parameter : IN
File miPDF = new File(pathPDF + "//" + miClienteID + ".pdf");
byte[] bodyIn = readFully(miPDF); //readFully procedure is shown below
miComando.setBytes(2, bodyIn); //THIS IS THE LINE WHERE THE ERROR IS PRODUCED
          //3rd parameter: OUT
miComando.registerOutParameter(3, java.sql.Types.VARCHAR);
miComando.execute();
private static byte[] readFully(File miPDF) throws FileNotFoundException, IOException {
FileInputStream fis = new FileInputStream(miPDF);
byte[] tmp = new byte[1024];
byte[] data = null;
int sz, len = 0;
while ((sz = fis.read(tmp)) != -1) {
if (data == null) {
len = sz;
data = tmp;
} else {
byte[] narr;
int nlen;
nlen = len + sz;
narr = new byte[nlen];
System.arraycopy(data, 0, narr, 0, len);
System.arraycopy(tmp, 0, narr, len, sz);
data = narr;
len = nlen;
if (len != data.length) {
byte[] narr = new byte[len];
System.arraycopy(data, 0, narr, 0, len);
data = narr;
return data;
}//fin readFully
This approach indicates that the PDF file is converted into an array of bytes, then is stored as binary in the BLOB field.
Thanx in advance, and looking forward for your comments.

You will probably need to use the setBinaryStream() method instead of setBytes().

Downloading a file from Database [Blob field]

I am trying to write an application which can upload and download files [Excel, Word etc.] to/from an Oracle 9i database Blob field. I am using Java/JSP for the same.
The upload part works just fine. However, when I try to download the file that I uploaded, I get an error.
A dialog box comes up asking me to Open/Save the file. However, when I try to save it, it says
�Internet Explorer cannot download �..tion=download&planId= testplan from localhost
Internet Explorer was not able to open this Internet Site. The requested site is either unavailable or cannot be found. Please try again later.�
I am using IE 6.0. I tested the same with Firefox browser and was able to download the file.
Can anyone help?
Code:
Following is the code I am using for the same.
/* Code to retrieve from Blob field */
String sqlString = "SELECT PLAN_DOCUMENT_NAME,PLAN_DOCUMENT FROM BRS_PLAN_DESCRIPTION WHERE PLAN_ID = ?";
ps = con.prepareStatement(sqlString);
ps.setString (1,planId);
rs = ps.executeQuery();
while (rs.next()) {
     fileBytes = rs.getBytes("PLAN_DOCUMENT");
     fileName = rs.getString("PLAN_DOCUMENT_NAME");
brsPlanDocument.setPlanId(planId);
brsPlanDocument.setFileName(fileName);
brsPlanDocument.setFileBytes(fileBytes);
/* Code for download */
String fileName = brsPlanDocument.getFileName();
String fileType = fileName.substring(fileName.indexOf(".")+1,fileName.length());
if (fileType.trim().equalsIgnoreCase("txt"))
     response.setContentType( "text/plain" );
else if (fileType.trim().equalsIgnoreCase("doc"))
     response.setContentType( "application/msword" );
else if (fileType.trim().equalsIgnoreCase("xls"))
     response.setContentType( "application/vnd.ms-excel" );
else if (fileType.trim().equalsIgnoreCase("pdf"))
     response.setContentType( "application/pdf" );
else if (fileType.trim().equalsIgnoreCase("ppt"))
     response.setContentType( "application/ppt" );
else
     response.setContentType( "application/octet-stream" );
response.setHeader("Content-Disposition","attachment; filename=\""+fileName+"\"");
response.setHeader("cache-control", "no-cache");
byte[] fileBytes=brsPlanDocument.getFileBytes();
ServletOutputStream outs = response.getOutputStream();
outs.write(fileBytes);
outs.flush();
outs.close();

Hi,
is this problem solved for you, I am also writing the java code to store different files in blob fields in database(db2udb) and allow users to open them through jsp pages. Upload seems to be working fine.....My big problem is only excel files are opened properly in both IE and Firefox. Word files, image files are not getting opened. Any suggestion as what I could be doing wrong....my jsp is kind of similar to the above one...
thanks in advace, please guide me
long pmsId = new Long(request.getParameter("pmsId")).longValue();
String fileName = request.getParameter("fileName");
int fileSeq = new Integer(request.getParameter("fileSeq")).intValue();
if(fileName.endsWith("txt")) {
response.setContentType("text/plain");
log.debug(" this is a text file");
} else if(fileName.endsWith("xls")) {
response.setContentType("application/vnd.ms-excel");
log.debug(" this is a excel file");
} else if(fileName.endsWith("gif")) {
response.setContentType("image/gif");
log.debug(" this is a image file");
} else if(fileName.endsWith("doc")) {
response.setContentType("application/msword");
log.debug(" this is a doc file");
} else if(fileName.endsWith("pdf")) {
response.setContentType("application/pdf");
log.debug(" this is a pdf file");
} else if(fileName.endsWith("ppt")) {
response.setContentType("application/ppt");
log.debug(" this is a ppt file");
} else {
response.setContentType("application/everythingelse");
log.debug(" this is a unknown ile");
response.setHeader("Content-Disposition", "attachment;filename="+fileName);
OutputStream out1 = response.getOutputStream();
Class.forName("com.ibm.db2.jcc.DB2Driver");
db2Conn = DriverManager.getConnection("jdbc:db2:TESTDB","db2admin","db2fv1000");
//log.debug("connection obtained");
pstmt = db2Conn.prepareStatement(" SELECT * FROM UPLOADDOCS WHERE PMSID = ? AND DOCSEQ = ? ");
//log.debug("statemenmt prepared");
pstmt.setLong(1, pmsId);
pstmt.setInt(2, fileSeq);
rs = pstmt.executeQuery();
int count = 0;
if(rs.next()){
InputStream is = rs.getBinaryStream("DOCUMENT"); //"is" is
//now the binary data
//of the file
byte[] buf = new byte[4096];
int len;
while ((len = is.read(buf)) > 0)
     out1.write(buf, 0, len);
out1.close();
out1.flush();

Loading class file stored in BLOB field

- I am able to store and retrieve Java files and XML files in and from a BLOB field, but when I store a class file and try and load it using Class Loader, it us unable to load the class. The size of the class file increases by 1 byte when I retrieve it from the database. Is this some security feature by the JVM? Is it not possible to store, retrieve and load a class file from a database table?
Thanks
Harini

Hi,
First, I would suggest you use fiddler (http://www.telerik.com/fiddler) to compare these two different client requests, second, please try to use Azure Storage Explorer (http://azurestorageexplorer.codeplex.com/) to do
this instead of the Azure Web Storage Explorer.
Best Regards,
Jambor
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How to read *.pdf files and store them in a database?

Dear programmers,
I have problem with reading *.pdf files and store them in a database.
can any one help me, please!
Is it possible to read more than one file from the local system and store them in a database.
thnaks in advance.
bye

What "problem" are you encountering?
Depending on your choice of database software, it may or may not support the storage of binary large objects (BLOBs).

Error displaying a jpg file loaded into a table with blob field

This may not be the correct forum for this question, but if it isn't could someone direct me to the correct one.
I have created a table with a blob field in which I have loaded a jpg image. This appeared to work correctly, but when I try to display the image in internet explorer it comes back and tells me that it doesn't recognize the file type. Enclosed is the table create, load, and display pl/sql code. Can anyone tell me what I am doing wrong. Thanks. For the mime/header I used owa_util.mime_header('images/jpg') because my image is a jpg file.
The database is 10g
-- Create table
create table PHOTOS
IMAGEID NUMBER(10),
IMAGE BLOB,
IMAGE_NAME VARCHAR2(50)
load image
CREATE OR REPLACE PROCEDURE load_file ( p_id number, p_photo_name in varchar2) IS
src_file BFILE;
dst_file BLOB;
lgh_file BINARY_INTEGER;
BEGIN
src_file := bfilename('SNAPUNCH', p_photo_name);
-- insert a NULL record to lock
INSERT INTO photos (imageid, image_name, image)
VALUES (p_id , p_photo_name, EMPTY_BLOB())
RETURNING image INTO dst_file;
-- lock record
SELECT image
INTO dst_file
FROM photos
WHERE imageid = p_id AND image_name = p_photo_name
FOR UPDATE;
-- open the file
dbms_lob.fileopen(src_file, dbms_lob.file_readonly);
-- determine length
lgh_file := dbms_lob.getlength(src_file);
-- read the file
dbms_lob.loadfromfile(dst_file, src_file, lgh_file);
-- update the blob field
UPDATE photos
SET image = dst_file
WHERE imageid = p_id
AND image_name = p_photo_name;
-- close file
dbms_lob.fileclose(src_file);
END load_file;
display image
PROCEDURE display_image(p_id NUMBER) IS
Photo BLOB;
v_amt NUMBER DEFAULT 4096;
v_off NUMBER DEFAULT 1;
v_raw RAW(4096);
BEGIN
-- Get the blob image
SELECT image
INTO Photo
FROM PHOTOS
WHERE IMAGEID = p_id;
owa_util.mime_header('images/jpg');
BEGIN
LOOP
-- Read the BLOB
dbms_lob.READ(Photo, v_amt, v_off, v_raw);
-- Display image
htp.prn(utl_raw.cast_to_varchar2(v_raw));
v_off := v_off + v_amt;
v_amt := 4096;
END LOOP;
dbms_lob.CLOSE(Photo);
EXCEPTION
WHEN NO_DATA_FOUND THEN
NULL;
END;
END;
The url I enter is: http://webdev:7777/tisinfo/tis.tiss0011.Display_Image?p_id=1

Just a little more information. When I enter owa_util.mime_header('image/jpeg') I can't display the file. It just shows up with a red x for the file.
When I enter owa_util.mime_header('image/jpg') it displays the file, but in the format
¿¿¿¿JFIF¿¿-Intel(R) JPEG Library, version [2.0.16.48]¿¿C
This is the way I would expect it to look if I opened it with Notepad, or an application that doesn't recognize jpg files. Can anyone tell me what I am doing wrong?? Thanks.

Can we use BLOB fields (that store images) in Crystal Report ?

I'm developing with ASP.NET, VS.NET 2003.
Using Crystal Report for VS.NET
DataBase: Oracle 10g
I store a BLOB field in a table. This field store images, like jpg files.
The Stored Procedure that I use to fill the report is:
OPEN MyCursor FOR
SELECT MyId , MyImg
FROM MyTable
MyImg is BLOB field
However, when I try to use the stored procedure in Crystal Report at design mode, any field can be displayed and then drag and drop to the report, but MyImg is not possible.
There is an error message:
Details: ADO Error Code: 0x80004005
Source: Microsoft OLE DB Provider for Oracle
Description: Data type is not supported
I'm afraid that is not so easy for me to change DB connector drivers.
My question is:
- Is it possible to use BLOB fields in Cyrstal Reports?
- Or should I convert them previously to something, so they can be displayed in Crystal Report at desing mode ?
- If I should change DB connector drivers, which one should I use and from where should I download it and then install it in my Web Server?
Thank you very much!

Hi,
I dont know much at all about CR, but I do know Microsoft's OLEDB Provider for Oracle doesnt support Blob datatype.. http://support.microsoft.com/kb/q244661/
Oracle's OLEDB provider does though, you can get it as part of the ODAC download on OTN.
Hope that helps,
Greg

(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();

Read a file store in a Blob field

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