How to read XML file and write into another XML file

Hi all, I am new to JAVAXML.
My problem is I have to read one XML file and take some Nodes from that and write these nodes into another XML file...
I solved, how to read XML file
But I don't know how to Write nodes into another XML.
Can anyone help in this???
Thanks in advance..

This was answered a bit ago. There was a thread called "XML Mergine" that started on Sept 14th. It has a lot of information about what it takes to copy nodes from one XML Document object into another.
Dave Patterson

Similar Messages

How to read from one file and write into another file?

Hi,
I am trying to read a File and write into another file.This is the code that i am using.But what happens is last line is only getting written..How to resolve this.the code is as follows,
public String get() {
     FileReader fr;
     try {
          fr = new FileReader(f);
          String str;
          BufferedReader br = new BufferedReader(fr);
          try {
               while((str= br.readLine())!=null){
               generate=str;
          } catch (IOException e1) {
               e1.printStackTrace();
          } }catch (FileNotFoundException e) {
               e.printStackTrace();
     return generate;
where generate is a string declared globally.
how to go about it?
Thanks for your reply in advance

If you want to copy files as fast as possible, without processing them (as the DOS "copy" or the Unix "cp" command), you can try the java.nio.channels package.
import java.nio.*;
import java.nio.channels.*;
import java.io.*;
import java.util.*;
import java.text.*;
class Kopy {
     * @param args [0] = source filename
     *        args [1] = destination filename
    public static void main(String[] args) throws Exception {
        if (args.length != 2) {
            System.err.println ("Syntax: java -cp . Kopy source destination");
            System.exit(1);
        File in = new File(args[0]);
        long fileLength = in.length();
        long t = System.currentTimeMillis();
        FileInputStream fis = new FileInputStream (in);
        FileOutputStream fos = new FileOutputStream (args[1]);
        FileChannel fci = fis.getChannel();
        FileChannel fco = fos.getChannel();
        fco.transferFrom(fci, 0, fileLength);
        fis.close();
        fos.close();
        t = System.currentTimeMillis() - t;
        NumberFormat nf = new DecimalFormat("#,##0.00");
        System.out.print (nf.format(fileLength/1024.0) + "kB copied");
        if (t > 0) {
            System.out.println (" in " + t + "ms: " + nf.format(fileLength / 1.024 / t) + " kB/s");
}

How to read the data file and write into the same file without a temp table

Hi,
I have a requirement as below:
We are running lockbox process for several business, but for a few businesses we have requirement where in we receive a flat file in different format other than how the transmission format is defined.
This is a 10.7 to 11.10 migration. In 10.7 the users are using a custom table into which they are first loading the raw data and writing a pl/sql validation on that and loading it into a new flat file and then running the lockbox process.
But in 11.10 we want to restrict using temp table how can we achieve this.
Can we read the file first and then do validations accordingly and then write to the same file and process the lockbox.
Any inputs are highly appreciated.
Thanks & Regards,
Lakshmi Kalyan Vara Prasad.

Hello Gurus,
Let me tell you about my requirement clearly with an example.
Problem:
i am receiving a dat file from bank in below format
105A371273020563007 07030415509174REF3178503 001367423860020015E129045
in this detail 1 record starting from 38th character to next 15 characters is merchant reference number
REF3178503 --- REF denotes it as Sales Order
ACC denotes it as Customer No
INV denotes it as Transaction Number
based on this 15 characters......my validation comes.
If i see REF i need to pick that complete record and then fill that record with the SO details as per my system and then submit the file for lockbox processing.
In 10.7 they created a temporary table into which they are loading the data using a control file....once the data is loaded into the temporary table then they are doing a validation and updating the record exactly as required and then creating one another file and then submitting the file for lockbox processing.
Where as in 11.10 they want to bypass these temporary tables and writing it into a different file.
Can this be handled by writing a pl/sql procedure ??
My findings:
May be i am wrong.......but i think .......if we first get the data into ar_payments_interface_all table and then do the validations and then complete the lockbox process may help.
Any suggestions from Oracle GURUS is highly appreciated.
Thanks & Regards,
Lakshmi Kalyan Vara Prasad.

How to read from and write into the same file from multiple threads?

I need to read from and write into a same file multiple threads.
How can we do that without any data contamination.
Can u please provide coding for this type of task.
Thanks in advance.

Assuming you are using RandomAccessFile, you can use the locking functionality in the Java NIO library to lock sections of a file that you are reading/writing from each thread (or process).
If you can't use NIO, and all your threads are in the same application, you can create your own in-process locking mechanism that each thread uses prior to accessing the file. That would take some development, and the OS already has the capability, so using NIO is the best way to go if you can use JDK 1.4 or higher.
- K
I need to read from and write into a same file
multiple threads.
How can we do that without any data contamination.
Can u please provide coding for this type of task.
Thanks in advance.

Hi, extract data from xml file and insert into another exiting xml file

i am searching code to extract data from xml file and insert into another exiting xml file by a java program. I understood it is easy to extract data from a xml file, and how ever without creating another xml file. We want to insert the extracted data into another exiting xml file. Suggestions?
1st xml file which has two lines(text1.xml)
<?xml version="1.0" encoding="iso-8859-1"?>
<xs:PrintDataRequest xmlns:xs="http://com.unisys.com/Anid"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://com.unisys.com/Anid file:ANIDWS.xsd">
<xs:Person>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://com.unisys.com/Anid file:ANIDWS.xsd">
These two lines has to be inserted in the existing another xml(text 2.xml) file(at line 3 and 4)
Regards,
bubbly

Jadz_Core wrote:
RandomAccessFile? If you know where you want to insert it.Are you sure about this? If using this, the receiving file would have to have bytes inserted that exactly match the number of bytes replaced. I'm thinking that you'll likely have to stream through the second XML with a SAX parser and copy information (or insert new information) as you stream with an XML writer of some sort.

Extract data from xml file and insert into another exiting xml fil

hello,
i am searching extract data from xml file and insert into another exiting xml file by a java program. I understood it is easy to extract data from a xml file, and how ever without creating another xml file. We want to insert the extracted data into another exiting xml file. Suggestions?
Regards,
Zhuozhi

If the files are small, you can load the target file in a DOM document, insert the data from the source file and persist the DOM.
If the files are large, you probably want to use a StAX or SAX.

Problem in reading no. of files and writing into a single file

Hi,
Iam with Problem in reading no. of files and writing into a single file....
Iam reading no. of files stored in local directory.......
Iam able to read and print the data in files successfully....but while writing..only first file is being written...and the next files are not written in my output file...
plz tell me my mistake....I hope Iam doing some mistake while writing into file...PLz help.....
Basically my code structure is like this....
import java.io.*;
import java.util.regex.*;
import java.util.*;
import java.text.*;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
class Writing {
public static void main(String args[]) throws Exception {
          FileOutputStream fileOut = new FileOutputStream("ServerResult.xls"); //my output file
          int counter = 1;
          File dir = new File("C:/Perform/ServerLogs");
          String[] children = dir.list();
          if( children == null)
               System.out.println("The Directory mentioned does not exist");
          else {
               for (int fileNo = 0; fileNo < children.length; fileNo++ ) {        //Files iteration starts
                    String filename = children[fileNo];
          File logFile = new File(filename);
FileReader logFileReader = new FileReader(logFile);
BufferedReader logReader = new BufferedReader(logFileReader);
StringBuffer sBuf = new StringBuffer(5000);
          HSSFWorkbook wb = new HSSFWorkbook();
          HSSFSheet sheet = wb.createSheet();
          HSSFRow rowTitle;
          HSSFRow rowReq;
          HSSFRow rowRes;
String aLine = null;
boolean skip = false;
boolean readed = false;
boolean initReq = false;
          boolean flag = false;
long requestTime = 0;
long responseTime = 0;
long recdTime = 0;
long sentTime = 0;
          long hasTime = 0;
          long presentTime = 0;
          int hasCalls = 0;
Pattern startMessage = Pattern.compile("^<MESSAGE.*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
Pattern requestMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"RequestMsg.\".*ID=\".*_"+args[0]+"\".*<ActName>(.*)</ActName>.*", Pattern.DOTALL);
Pattern requestMessage1 = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"RequestMsg.\".*ID=\".*_"+args[0]+"\".*<Svc id=\"(.*)\">.*", Pattern.DOTALL);
Pattern responseMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"ResponseMsg\".*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
Pattern initMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"HostConnInit\".*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
Pattern initResMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"ResponseMsg\".*ID=\"null\".*", Pattern.DOTALL);
Pattern initResIDMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"ResponseMsg\".*ID=\"null\".*<IATA>"+args[0]+"</IATA>.*", Pattern.DOTALL);
          Pattern sentMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"DCMsgSentInfo\".*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
          Pattern rcvdMessage = Pattern.compile("^<MESSAGE.*TS=\"(.*)\" CATEGORY=\"DCMsgRcvdInfo\".*ID=\".*_"+args[0]+"\".*", Pattern.DOTALL);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
DecimalFormat dcf = new DecimalFormat("########.##");
String actName = "";
          if (fileNo ==0)
          rowTitle = sheet.createRow((short)0);
          rowTitle.createCell((short)0).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)0).setCellValue("Req/Res");
          rowTitle.createCell((short)1).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)1).setCellValue("Action");
          rowTitle.createCell((short)2).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)2).setCellValue("Server Time(in ms)");
          rowTitle.createCell((short)3).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)3).setCellValue("Request Vs Response Time in Server(in ms)");
          rowTitle.createCell((short)4).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)4).setCellValue("Time Taken By HAS/HOST(in ms)");
          rowTitle.createCell((short)5).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)5).setCellValue("No. of HAS calls");
          rowTitle.createCell((short)6).setCellType(HSSFCell.CELL_TYPE_STRING);
          rowTitle.createCell((short)6).setCellValue("Data Size");
          //wb.write(fileOut);
while((aLine=logReader.readLine()) != null) {
if(aLine.startsWith("<MESSAGE TYPE=\"EVENT\"")) {
Matcher m = startMessage.matcher(aLine);
if(m.find()) {
sBuf.setLength(0);
sBuf.append(aLine);
skip = false;
initReq = false;
m = initMessage.matcher(aLine);
if(m.find()) {
initReq = true;
} else {
if(initReq) {
m = initResMessage.matcher(aLine);
if(m.find()) {
sBuf.setLength(0);
sBuf.append(aLine);
skip = false;
} else if(aLine.startsWith("</MESSAGE>")) {
if(!skip) {
sBuf.append(aLine);
readed = true;
} else if(!skip){
sBuf.append(aLine);
if(!skip && readed) {
String tempStr = sBuf.toString();
if(tempStr.length() > 0) {
boolean reqMatched = false;
Matcher m = null;
if(initReq) {
m = initMessage.matcher(tempStr);
actName = "Intialization";
} else {
m = requestMessage.matcher(tempStr);
String time = "";
if(m.find()) {
reqMatched = true;
for (int i=1; i<=m.groupCount(); i++) {
String groupStr = m.group(i);
if(i == 1) {
time = groupStr;
} else if(i == 2) {
actName = groupStr;
} else if(!initReq){
m = requestMessage1.matcher(tempStr);
if(m.find()) {
reqMatched = true;
for (int i=1; i<=m.groupCount(); i++) {
String groupStr = m.group(i);
if(i == 1) {
time = groupStr;
} else if(i == 2) {
actName = groupStr;
if(time.length() > 0 ) {
try{
requestTime = sdf.parse(time).getTime();
}catch(Exception ex){}
System.out.println("Request,"+actName+","+time+",,,,"+dcf.format(((double)time.length()/1024.0))+"K");
                              //bw.write("Request,"+actName+","+time+",,,,"+dcf.format(((double)time.length()/1024.0))+"K");
                              String reqDataSize = dcf.format(((double)time.length()/1024.0))+"K" ;
                              rowReq = sheet.createRow((short)counter);
                                   rowReq.createCell((short)0).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)0).setCellValue("Request");
                                   rowReq.createCell((short)1).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)1).setCellValue(actName);
                                   rowReq.createCell((short)2).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)2).setCellValue(time);
                                   rowReq.createCell((short)3).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)3).setCellValue("");
                                   rowReq.createCell((short)4).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)4).setCellValue("");
                                   rowReq.createCell((short)5).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)5).setCellValue("");
                                   rowReq.createCell((short)6).setCellType(HSSFCell.CELL_TYPE_STRING);
                                   rowReq.createCell((short)6).setCellValue(reqDataSize);
                                   counter = counter +1;
                                   System.out.println("counter is "+counter);
                         Matcher l = sentMessage.matcher(tempStr);
                         Matcher k = rcvdMessage.matcher(tempStr);
               if(l.find()) {
                                        for (int i=1; i<=l.groupCount(); i++) {
     String groupStr2 = l.group(i);
try{
sentTime = sdf.parse(groupStr2).getTime();
}catch(Exception ex){}
                    if(k.find())
                                             for(int j=1;j<=k.groupCount(); j++) {
                                             String groupStr1 = k.group(j);
                                             try{
recdTime = sdf.parse(groupStr1).getTime();
}catch(Exception ex){}
                                             presentTime = (recdTime - sentTime);
                                             hasTime = hasTime + presentTime;
                                             hasCalls = hasCalls +1;
if(!reqMatched) {
if(initReq) {
m=initResIDMessage.matcher(tempStr);
} else {
m=responseMessage.matcher(tempStr);
if(m.find()) {
for (int i=1; i<=m.groupCount(); i++) {
String groupStr = m.group(i);
try{
responseTime = sdf.parse(groupStr).getTime();
}catch(Exception ex){}
                                             String resDataSize = dcf.format(((double)tempStr.length()/1024.0))+"K" ;
                                             rowRes = sheet.createRow((short)(counter));
                                             rowRes.createCell((short)0).setCellType(HSSFCell.CELL_TYPE_STRING);
                                             rowRes.createCell((short)0).setCellValue("Response");
                                             rowRes.createCell((short)1).setCellType(HSSFCell.CELL_TYPE_STRING);
                                             rowRes.createCell((short)1).setCellValue(actName);
                                             rowRes.createCell((short)2).setCellType(HSSFCell.CELL_TYPE_STRING);
                                             rowRes.createCell((short)2).setCellValue(groupStr);
                                             rowRes.createCell((short)3).setCellType(HSSFCell.CELL_TYPE_NUMERIC);
                                             rowRes.createCell((short)3).setCellValue((responseTime - requestTime));
                                             rowRes.createCell((short)4).setCellType(HSSFCell.CELL_TYPE_NUMERIC);
                                             rowRes.createCell((short)4).setCellValue(hasTime);
                                             rowRes.createCell((short)5).setCellType(HSSFCell.CELL_TYPE_NUMERIC);
                                             rowRes.createCell((short)5).setCellValue(hasCalls);
                                             rowRes.createCell((short)6).setCellType(HSSFCell.CELL_TYPE_STRING);
                                             rowRes.createCell((short)6).setCellValue(resDataSize);
                                             hasTime = 0;
                                             hasCalls = 0;
                                             counter = counter + 1 ;
sBuf.setLength(0);
readed = false;
          wb.write(fileOut);
          } // End of for (int fileNo = 0; fileNo < children.length; fileNo++ )
}     //End of else
          fileOut.close();
} //End of public static void main
} // End of Class

First of all, use [code]-tags to make your code readable, please.
I didn't do a complete inspection of your code (because it's too much and unreadable as it is) and I don't know POI, but creating a new HSSFWorkbook for each input file sounds fishy to me ... try re-using the workbook and just creating a new sheet in each iteration.

How to read the date and time information of a file by labview

how to read the date and time information of a file by labview? for example, created time and modified time.
Solved!
Go to Solution.

if you need to know the last modification date of file:-
"Functions->File I/O->Advanced File Functions->File/Directory Info.vi"
This vi returns the value of file's last modification date. This is returned as U32 number. To see it in MM/DD/YY format you must create the indicator, right-click on it and select "Format & Precision" item from drop-down menu. Then select "Time and Date" format there.
Thanks as kudos only

Reading Data from Unix file and write into an Internal table

Dear all,
                 I am having an requirement of reading data from unix file and write the same into an internal table..how to do that ...experts please help me in this regard.

Hi,
do like this
PARAMETERS: p_unix LIKE rlgrap-filename OBLIGATORY.
DATA: v_buffer(2047) TYPE c.
DATA: BEGIN OF i_buffer OCCURS 0,
        line(2047) TYPE c,
END OF i_buffer.
* Open the unix file..
OPEN DATASET p_unix FOR INPUT IN TEXT MODE.
<b>IF sy-subrc NE 0.
*** Error Message "Unable to open file.
ELSE.</b>
   DO.
     CLEAR: v_buffer.
     READ DATASET p_unix INTO v_buffer.
     IF sy-subrc NE 0.
        EXIT.
     ENDIF.
     MOVE v_buffer TO i_buffer.
     APPEND i_buffer.
ENDDO.
ENDIF.
CLOSE DATASET p_unix.
<b>Reward points if it helps,</b>
Satish

How to create new Sheet in Excel file and write into it

Hi to all, my requirement is this:
I have an excel file (.xls) with multiple sheets (three sheets for precision: sheet1, sheet2 and sheet3).
I must create in the same excel file new sheet, say sheet4, read data from sheet1, sheet2 and sheet3 and write them into sheet4.
How to realize this in SSIS?
Expecially, Is it possible to realize this in SSIS?
thanks in advance.

You need to create the sheet with the required metadata. There's no use creating blank sheet.
Also metadata has to be fixed using a sample sheet prior to start of the package for setting the mapping. You may create a excel template for this purpose to just set the mapping at design time.
At runtime pass actual excel sheet path for ExcelFilePath property of the source to point to correct file.
Also the create table statement should include the same metadata info (columns)
Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs
Hi, well it works fine! I have used a sample sheet prior to start of the package for setting the mapping.
Next at run time pass actual excel sheet path for ExcelFilePath property of the source to point to correct file.
However I have set also ValidateExternalMetadata properties of the Excel Destination to false and DelayValidation properties of the package to true.
Now my problem is the following:
I stored the three sheets name (sheet1, sheet2, sheet3) in the Object type user variable through a script task and the foreach loop loops through the three sheets stored in the variable.
Now, I want that at each iteration the CURRENT VALUE of the Object type user variable is mapped into another user variable wich in turn is given in input to the Excel Source.
Resuming:
-) I have to copy the content of three sheets (sheet1, sheet2, sheet3) of excel file into another new sheet, sheet4.
-) I stored the three sheets name (sheet1, sheet2, sheet3) in the Object type user variable.
-) With a foreach loop container I loops the three sheets stored in the Object type user variable.
-) Within a foreach loop container I have a Data Flow Task that transfer data from source sheet (sheet1, sheet2, sheet3) into destination sheet, sheet4.
-) PROBLEM: how to change dinamically at each iteration of the foreach loop the name of source sheet? In the destination excel Task the sheet is always the same at each iteration, sheet4. But in the source excel task the name of sheet musts change at each
iteration. In particular at the first iteration the name of the source sheet must be "sheet1$", at the second iteration "sheet2$", in the last iteration "sheet3$".
How to change sheet name dinamically at each iteration?
thanks.

How to read from BLOB and Write to a file in user readable format.

Hi,
     I am trying to read from a BLOB column and write the content to a file in user readable format. So far I was able to read the Blob column using dbms_lob, but not able to write to a file. Kindly let me know the method to do this.

Hi, with this Java Code from Oracle Technet it's a easy thing:
// classpath= /ORACLE/u01/app/oracle/product/10.2.0.3/jdbc/lib/ojdbc14.jar
// Java SQL classes
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
// Oracle JDBC driver class
import oracle.jdbc.OracleDriver;
// Java IO classes
import java.io.IOException;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
//Java Util classes
import java.util.Properties;
* This class demonstrates the Oracle JDBC 10g enhanced features for inserting
* and retrieving CLOB data from the database. Using the new features, large
* data of more than 32765 bytes can be inserted into the database using the
* existing PreparedStatement.setString() and PreparedStatement.getString()
* methods.
public class ClobMan {
/* Database Connection object */
private Connection conn = null;
/* Variables to hold database details */
private String url = null;
private String user = null;
private String password = null;
// Create a property object to hold the username, password and
// the new property SetBigStringTryClob.
private Properties props = new Properties();
/* String to hold file name */
private String fileName = null;
* Default Constructor to instantiate and get a handle to class methods
* and variables.
public ClobMan(String fileName) {
this.fileName = fileName;
* Main runnable class.
public static void main(String[] args) throws SQLException {
// Instantiate the main class.
ClobMan clobMan = new ClobMan(args[0]);
// Load the Oracle JDBC driver class.
DriverManager.registerDriver(new OracleDriver());
// Load the database details into the variables.
String dbUrl = "jdbc:oracle:thin:@pmol:1550:dbpmol";
clobMan.url = dbUrl;
clobMan.user = "gh10";
clobMan.password = "secret";
// Populate the property object to hold the username, password and
// the new property 'SetBigStringTryClob' which is set to true. Setting
// this property allows inserting of large data using the existing
// setString() method, to a CLOB column in the database.
clobMan.props.put("user", clobMan.user );
clobMan.props.put("password", clobMan.password);
clobMan.props.put("SetBigStringTryClob", "true");
// Check if the table 'CLOB_TAB' is present in the database.
//clobMan.checkTables();
// Call the methods to insert and select CLOB from the database.
//clobMan.insertClob();
clobMan.selectClob();
* This method will insert the data into a CLOB column in the database.
* Oracle JDBC 10g has enhanced the existing PreparedStatement.setString()
* method for setting the data more than 32765 bytes. So, using setString(),
* it is now easy to insert CLOB data into the database directly.
private void insertClob() throws SQLException {
// Create a PreparedStatement object.
PreparedStatement pstmt = null;
try {
// Create the database connection, if it is closed.
if ((conn==null)||conn.isClosed()){
// Connect to the database.
conn = DriverManager.getConnection( this.url, this.props );
// Create SQL query to insert data into the CLOB column in the database.
String sql = "INSERT INTO clob_tab VALUES(?)";
// Read a big file(larger than 32765 bytes)
String str = this.readFile();
// Create the OraclePreparedStatement object
pstmt = conn.prepareStatement(sql);
// Use the same setString() method which is enhanced to insert
// the CLOB data. The string data is automatically transformed into a
// clob and inserted into the database column. Make sure that the
// Connection property - 'SetBigStringTryClob' is set to true for
// the insert to happen.
pstmt.setString(1,str);
// Execute the PreparedStatement
pstmt.executeUpdate();
} catch (SQLException sqlex) {
// Catch Exceptions and display messages accordingly.
System.out.println("SQLException while connecting and inserting into " +
"the database table: " + sqlex.toString());
} catch (Exception ex) {
System.out.println("Exception while connecting and inserting into the" +
" database table: " + ex.toString());
} finally {
// Close the Statement and the connection objects.
if (pstmt!=null) pstmt.close();
if (conn!=null) conn.close();
* This method reads the CLOB data from the database by using getString()
* method.
private void selectClob() throws SQLException {
// Create a PreparedStatement object
PreparedStatement pstmt = null;
// Create a ResultSet to hold the records retrieved.
ResultSet rset = null;
try {
// Create the database connection, if it is closed.
if ((conn==null)||conn.isClosed()){
// Connect to the database.
conn = DriverManager.getConnection( this.url, this.props );
// Create SQL query statement to retrieve records having CLOB data from
// the database.
String sqlCall = "SELECT rownum, name, sourcetext FROM t_source";
pstmt= conn.prepareStatement(sqlCall);
// Execute the PrepareStatement
rset = pstmt.executeQuery();
String rownum = null;
String o_name =null;
String clobVal = null;
// Get the CLOB value from the resultset
//java.io.BufferedWriter out = new java.io.BufferedWriter(new java.io.FileWriter("pr_all.sql"));
while (rset.next()) {
rownum = rset.getString(1);
     o_name = rset.getString(2);
     clobVal = rset.getString(3);
System.out.println(" length: "+clobVal.length()+" "+o_name+" "+rownum);
     java.io.BufferedWriter out =
     new java.io.BufferedWriter(new java.io.FileWriter(o_name+".prc"));
     out.write(clobVal);
     out.newLine();
     out.write("/");
     out.newLine();
     out.newLine();
out.flush();
out.close();
} catch (SQLException sqlex) {
// Catch Exceptions and display messages accordingly.
System.out.println("SQLException while connecting and querying the " +
"database table: " + sqlex.toString());
} catch (Exception ex) {
System.out.println("Exception while connecting and querying the " +
"database table: " + ex.toString());
} finally {
// Close the resultset, statement and the connection objects.
if (rset !=null) rset.close();
if (pstmt!=null) pstmt.close();
if (conn!=null) conn.close();
* Method to check if the table ('CLOB_TAB') exists in the database; if not
* then it is created.
* Table Name: CLOB_TAB
* Column Name Type
* col_col CLOB
private void checkTables() {
Statement stmt = null;
ResultSet rset = null;
try {
// Create the database connection, if it is closed.
if ((conn==null)||conn.isClosed()){
// Connect to the database.
conn = DriverManager.getConnection( this.url, this.props );
// Create Statement object
stmt = conn.createStatement();
// Check if the table is present
rset = stmt.executeQuery(" SELECT table_name FROM user_tables "+
" WHERE table_name = 'CLOB_TAB' ");
// If the table is not present, then create the table.
if (!rset.next()) {
// Table does not exist, create it
stmt.executeUpdate(" CREATE TABLE clob_tab(clob_col CLOB)");
} catch (SQLException sqlEx) {
System.out.println("Could not create table clob_tab : "
+sqlEx.toString());
} finally {
try {
if( rset != null ) rset.close();
if( stmt != null ) stmt.close();
if (conn!=null) conn.close();
} catch(SQLException ex) {
System.out.println("Could not close objects in checkTables method : "
+ex.toString());
* This method reads the specified text file and, returns the content
* as a string.
private String readFile()
throws FileNotFoundException, IOException{
// Read the file whose content has to be passed as String
BufferedReader br = new BufferedReader(new FileReader(fileName));
String nextLine = "";
StringBuffer sb = new StringBuffer();
while ((nextLine = br.readLine()) != null) {
sb.append(nextLine);
// Convert the content into to a string
String clobData = sb.toString();
// Return the data.
return clobData;
}

How to Read from two file and write to another file --Please help !!

Hi all,
Please suggest me where i'm goin goin wrng.
I have 2 flat files. one of them is the main file(Ann.dat) has a about 150,000 lines (each line has unique ID from 00001 to 45000) of data and the the other(Miss.dat) has a just a list of IDs that are no longer in use & have to be deleted from the first file(NewAnn.dat). (Note that Ann.dat is a tab delimitted file and Miss.dat is just a list of all invalid IDs)
Below is my code. It doesn't do what I'm supposed to. Please suggest me or help me with a code to do it. What I'm trying to do is read each of the lines from the 2 files compare the ID in ann.dat with all the IDs in Miss.dat & if it doesn't match with the ID in Miss.dat write the whole line to NewAnn.dat. And do the rest with all the lines in Ann.dat.
It could be a real dumb question. since i'm not a software professional, I consider myself to be newbie to programming. I desperately need your help.
import java.io.*;
import java.util.*;
public class anntemp{
     public static void main(String[] args)
          String keyAnn ="";
          String keyMis="";
          String recAnn =null;
          String recMis =null;
          try{
          FileReader fr=new FileReader("C:\\Tom\\Ann.dat");
          BufferedReader br=new BufferedReader(fr);
          int couter=0;
          while ((recAnn = br.readLine())!=null)
               couter++;
               keyAnn = recAnn.substring(0, recAnn.indexOf("\t"));
          FileReader fr1=new FileReader("C:\\Tom\\Miss.dat");
          BufferedReader br1=new BufferedReader(fr1);
          while((recMis = br1.readLine())!=null){
          keyMis = recMis.substring(0, recMis.indexOf("\t"));
               if(keyAnn.equals(keyMis)){
     FileWriter fw=new FileWriter("C:\\Tom\\NewAnn.dat",true);
     BufferedWriter bw=new BufferedWriter(fw);
     PrintWriter pw=new PrintWriter(bw);
     StringBuffer writeValue = new StringBuffer();
     writeValue.append(recAnn);
                                             pw.println(writeValue.toString());
     pw.flush();
          }catch (Exception expe){
               System.out.println("In Exception ");
               expe.printStackTrace();
Thank you all in advance,
br

I think you need to close the files when you are done in the inner loop. Plus I think you'll be overwritting the file in the inner loop if more than one match. It might be easier to read the unused id file into a map at the start, and then loop up the id's from the master file in the map. You can put the unused id's in as the keys, and a Boolean.TRUE as the value (value won't matter). Then just check if the map contains the key for the id read from the master file. That should cut down on disk activity. This assumes the unused id file is smallish.

How to change the layout of an input file and write to an output file

Hi
I have a .csv file which has a layout as schoolNo. , county1,county2,county3,county4,county5
It will need to go into an output file as schoolNo. repeated and a county on each record .
ie., schoolNo.,county1
schoolNo.,county2
schoolNo.,county3
schoolNo.,county4
schoolNo.,county5
I wrote the java program as follows ..which results in this error
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
BECAUSE :--
i know bec., the first record doesnot have county3,county4,county5 . So when the if loop for county3 lenght is checked it gives this exception .
Pls help me write this program ..thanks in advance .
/Here I open the input file and read in record by record
          BufferedReader readin;
          try {
               readin = new BufferedReader(new FileReader(InFile));
               String firstLine = readin.readLine();
               String[] headers = firstLine.split(",");
               columnCount = headers.length;
               System.out.println("Columns in ZIP Master File: "+columnCount);
               for(String input ;(input = readin.readLine()) != null; ){
                    recCount++;
                    input = input.substring(1);
                    String[] column = input.split(",");
                    if(columnCount == 10){
                         eachIP++;
//                               OUTPUT FILE
                              if(column[1].length()> 0) {
                                   String mainStr = column[0] + "," + column[1] ;
                                   Count++;
                                   totalcolumns++;
                                   writeOutFile.write(mainStr);
                                   writeOutFile.newLine();
                              else{
                              bypassedCount++;
                              if(column[2].length()>0){
                                   String mainStr = column[0]+ "," + column[2];
                                   Count++;
                                   totalcolumns++;
                                   writeOutFile.write(mainStr);
                                   writeOutFile.newLine();
                              else{
                              bypassedCount++;
                              if(column[3]..length()>0){
                                   String mainStr = column[0]+ "," + column[3];
                                   Count++;
                                   totalcolumns++;
                                   writeOutFile.write(mainStr);
                                   writeOutFile.newLine();
                              else{
                              bypassedCount++;
                             }

There are two split( ... ) methods; check the other one (the one with two arguments), it allows for empty entries to be counted, i.e. split(inputString, -1) gives you the wanted results.

How to read ecel sheet and insert into oracle table

hi all,
am working on forms builder 6i. and i want , from a trigger to read from a a sheet excel file the data and insert into a table that i had aleady created.
i whrite a code that can till now open the excel file but i cant read the data to insert it into the table.
am using TEXT_IO.IS_OPEN to open the file
TEXT_IO.GET_LINE to take each line
and subst(x as variable) to read the first line , but the subsrt return nohing
any solution??

There's already a topic made on this: how to copy data from excel to oracle forms

Copying a flash file and pasting into another one...

I want to copy a .swf file I have and paste it into another one, frames and all. I have tried but nothing gets copied over correctly. Either that or my buttons are on a single frame.. and no longer act like a button with the -Over-Up-Down-Hit frames. Can this be done? please help...
Thanks Guys,
-Dedikation-

Select all of the timeline frame, right click the selection and choose Copy FRames. In the other file, Insert -> New Symbol -> MovieClip... etc... select the one keyframe in the empty movieclip's only layer, right click the selection and choose Paste Frames. All layers and frames should paste in as they were copied.

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