Reading data from a serialized file(Data is in special characters &symbols)

Please help me.... I struck up at reading data in a serialized file. It is a text file with some special characters. My question is - Is it a real serialized file or some bad file? If it a real good one please tell me which method i have to use to read? Actually i have to read records with time stamps from this file and have to do some calculations on them.
FILE CONTENTS :
¬í sr java.util.ArrayListxÒ^TM^Ça I sizexp w sr *com.progress.recruitment.test.email.Record¨&fnof;ù~&lsaquo;6 I aI bI cI dI idI timexp sq ~ ¥¤sq ~
Ûsq ~ gÒsq ~ 5ásq ~ E.x

It looks like it might contain serialized Java objects, since it contains Java class names. Have you tried reading it as such to see what happens?
Or are you asking how to do that? In which case why not just start with the code in the Java serialization tutorial and go from there?
Or did you not know there was such a tutorial? Google keywords: "java serialization tutorial".

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Reading integers from a .txt file and computing means

I have a program that uses for loops to produce ten integers (1-10) are returns the average mean, geometric mean, and harmonic mean.
Now i need to change this program to read integers from a .txt file and return the same data. Basically i need to change my for statements that are incrementing to read the text file.
Thanks guys.

You haven't asked a question. You haven't posted code. What are you expecting here?
But I guess I'll take a stab at it and say you should look at the Scanner class
http://java.sun.com/javase/6/docs/api/java/util/Scanner.html
or BufferedReader
http://java.sun.com/javase/6/docs/api/java/io/BufferedReader.html
I'll never understand what makes people come to the forums, create an account, and ask a lazy question, when they could get a great answer much quicker through Google.
http://www.google.com/search?q=java+file+input (hint: look at the second search result)

Indesign CS3-JS - Problem in reading text from a text file

Can anyone help me...
I have an problem with reading text from an txt file. By "readln" methot I can read only the first line of the text, is there any method to read the consecutive lines from the text file.
Currently I am using Indesign CS3 with Java Script (for PC).
My Java Script is as follows........
var myNewLinksFile = myFindFile("/Links/NewLinks.txt")
var myNewLinks = File(myNewLinksFile);
var a = myNewLinks.open("r", undefined, undefined);
myLine = myNewLinks.readln();
alert(myLine);
function myFindFile(myFilePath){
var myScriptFile = myGetScriptPath();
var myScriptFile = File(myScriptFile);
var myScriptFolder = myScriptFile.path;
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if(File(myFilePath).exists == false){
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catch(myError){
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Thanks,
Bharath Raja G

Hi Bharath Raja G,
If you want to use readln, you'll have to iterate. I don't see a for loop in your example, so you're not iterating. To see how it works, take a closer look at FindChangeByList.jsx--you'll see that that script iterates to read the text file line by line (until it reaches the end of the file).
Thanks,
Ole

Looking for pure Java API to read metadata from an MP4 file.

Hi, I am looking for a pure Java api that can read MP4 metadata. I have been trying to look online for one but have not found anything
suitable. If there are no good api's, can someone point me to resources on how to parse metadata from an MP4, tutorials would be great
as well. I have looked online for that as well but have not found much. Any help would be greatly appreciated.

Cross posted
http://www.java-forums.org/new-java/59652-looking-pure-java-api-read-metadata-mp4-file.html
http://www.coderanch.com/t/580833/Streams/java/Looking-pure-Java-API-read
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db

Fields in Flat File are separated by special characters

hello every one,
fIf fields in Flat File are separated by special characters
and If Flat File is given in Excel sheet , how to handle this kind of issues.
to Upload data into R/3 system, in BDC.
If u have sample program ,please send it ot me and explain ?
others give me hints...

Hi,
you can use the function module ALSM_EXCEL_TO_INTERNAL_TABLE .
Check this sample code.
hi,
use the FM ALSM_EXCEL_TO_INTERNAL_TABLE.
PARAMETERS:
P_INFL like RLGRAP-FILENAME.
DATA:
BEGIN OF T_DATA1 OCCURS 0,
RESOURCE(25) TYPE C,
DATE(10) TYPE C,
DURATION TYPE P DECIMALS 2,
ACTIVITY(25) TYPE C,
B_NBILL(1) TYPE C,
END OF T_DATA1,
T_DATA TYPE ALSMEX_TABLINE OCCURS 0 WITH HEADER LINE,
BEGIN OF T_FINAL OCCURS 0,
RESOURCE(25) TYPE C,
DATE(10) TYPE C,
DURATION(15) TYPE C,
ACTIVITY(25) TYPE C,
B_NBILL(10) TYPE C,
END OF T_FINAL.
DATA : HEADER TYPE XSTRING.
Work Variables Declaration.
CONSTANTS:
W_Y TYPE C VALUE 'Y',
W_N TYPE C VALUE 'N'.
Work area.
DATA:
WA_DATA LIKE T_FINAL.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR P_INFL.
PERFORM GET_FILENAME CHANGING P_INFL.
START-OF-SELECTION.
PERFORM UPLOAD_DATA_FROMEXCEL.
FORM UPLOAD_DATA_FROMEXCEL.
Downloading the data from presentation server
CALL FUNCTION 'ALSM_EXCEL_TO_INTERNAL_TABLE'
EXPORTING
FILENAME = p_infl
I_BEGIN_COL = 1
I_BEGIN_ROW = 2
I_END_COL = 8
I_END_ROW = 1000
TABLES
INTERN = T_DATA
EXCEPTIONS
INCONSISTENT_PARAMETERS = 1
UPLOAD_OLE = 2
OTHERS = 3.
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " upload_data_fromexcel
*& Form process_data
text
FORM PROCESS_DATA .
T_FINAL-RESOURCE = 'Resource'.
T_FINAL-DATE = 'Date'.
T_FINAL-DURATION = 'Duration'.
T_FINAL-ACTIVITY = 'Activity'.
T_FINAL-B_NBILL = 'Billable'.
APPEND T_FINAL.
SORT T_DATA BY ROW COL.
LOOP AT T_DATA.
CASE T_DATA-COL.
WHEN 3.
T_DATA1-RESOURCE = T_DATA-VALUE.
WHEN 4.
T_DATA1-DATE = T_DATA-VALUE.
WHEN 5.
T_DATA1-DURATION = T_DATA-VALUE.
WHEN 6.
t_data1-activity = t_data-value.
WHEN 7.
T_DATA1-B_NBILL = T_DATA-VALUE.
ENDCASE.
AT END OF ROW.
COLLECT T_DATA1.
ENDAT.
ENDLOOP.
LOOP AT T_DATA1.
T_FINAL-RESOURCE = T_DATA1-RESOURCE.
T_FINAL-DATE = T_DATA1-DATE.
T_FINAL-DURATION = T_DATA1-DURATION.
T_FINAL-ACTIVITY = T_DATA1-ACTIVITY.
T_FINAL-B_NBILL = T_DATA1-B_NBILL.
APPEND T_FINAL.
ENDLOOP.
ENDFORM. " process_data
*& Form get_filename
FORM GET_FILENAME CHANGING P_FILENAME.
CALL FUNCTION 'WS_FILENAME_GET'
EXPORTING
DEF_FILENAME = SPACE
DEF_PATH = P_FILENAME
MASK = ',. ,..'
MODE = 'O' " O = Open, S = Save
TITLE = BOX_TITLE
IMPORTING
FILENAME = P_FILENAME
EXCEPTIONS
INV_WINSYS = 1
NO_BATCH = 2
SELECTION_CANCEL = 3
SELECTION_ERROR = 4
OTHERS = 5.
CASE SY-SUBRC.
WHEN 1.
MESSAGE I999 WITH
'File selector not available on this windows system'(046).
WHEN 2.
MESSAGE E999 WITH
'Frontend function cannot be executed in background'(047).
WHEN 3.
MESSAGE I999 WITH 'Selection was cancelled'(048).
WHEN 4.
MESSAGE E999 WITH 'Communication error'(049).
WHEN 5.
MESSAGE E999 WITH 'Other error'(050).
ENDCASE.
ENDFORM. " get_filename
Kindly Reward points if you found the reply helpful.
Cheers,
CHAITANYA.

Reading PublicKey from a text file..

Hi,
I generated Public Key using RSA algorithm, and getEncoded() using Base64Encoder, after that I saved it as TEXT file. Here goes the code.
 KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
 keyGen.initialize(512);
KeyPair keypair = keyGen.generateKeyPair();
PublicKey publicKey = keypair.getPublic();
 PrivateKey privateKey = keypair.getPrivate();
 //Get bytes of the public and private keys
 byte[] privateKeyBytes = privateKey.getEncoded();
 byte[] publicKeyBytes = publicKey.getEncoded();
 byte[] keypb = publicKey.getEncoded();
 BASE64Encoder pubEncod = new BASE64Encoder();
 String pub64 = pubEncod.encode(publicKey.getEncoded());
 char c1[] = new char[pub64.length()];
 pub64.getChars(0, pub64.length(), c1, 0);
String fileName1 = "D:\\PublicKey\\PublicKey.txt";
 FileWriter f1 = new FileWriter(fileName1);
 f1.write(c1);
 f1.close();
After that, I tried to decoded PublicKey from this text file, using this code..
//Read public Key from txt file
//FileReader
FileReader fr = new FileReader("D:\\PublicKey\\PublicKey.txt ");
//BufferedReader - uses the FileReader
BufferedReader br = new BufferedReader(fr);
//String to contain lines from the file
String s;
//StringBuffer used store the file contents
StringBuffer sb = new StringBuffer("");
//Final output from the operation
String output;
//Loop through lines of the file, storing the file content
while((s = br.readLine()) != null)
{ sb.append(s + " ");
//Store the file contents in the output string
output = sb.toString();
//Close the file
fr.close();
BASE64Decoder decoder = new BASE64Decoder();
byte[] decodedPublicKey = decoder.decodeBuffer(output);
// bytes can be converted back to public key
X509EncodedKeySpec pubKeySpec = new X509EncodedKeySpec(decodedPublicKey);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
PublicKey pubk = keyFactory.generatePublic(pubKeySpec);
And got InvalidKeyException and lengthTag is TOO BIG.. Any one can tell what is the problem while reading back??
Thanks
Ameri

while((s = br.readLine()) != null)
{ sb.append(s + " ");
//Store the file contents in the output string
output = sb.toString();Hi,
Ouch! Your extra data is probably coming from the s. the 'b' and 'r' are being Base-64 decoded and producing extraneous bytes. I'm not sure why you have the in there, but try removing it an see what happens. Good luck.

Read numbers from a .txt file and display them in a graph

How can I get Labview 7 to read from a txt. file containing a lot of
coloumns with different datas? There`s only two of the coloumns that are
interesting to me, the first, that contains the time of the measuring, and
one in the middle, that contains the measured temperatures. I want Labview
to read this datas and display them graphicly.
Thanks from Stale

Here's one way.
You can also use the help-> find examples and search for "text".
2006 Ultimate LabVIEW G-eek.
Attachments:
Graph.vi ‏21 KB

How to read metadata from a pdf file

hello
i have got xmp sdk for windows.
i want to read the metadata from a pdf file but i cannot
find a way to do so.
i cannot understand that which method to use to open the file whose metadata i want to read.
if someone can tell me by an little code example then it would be great help.
thanks

The sample XAPDumper read metadata in a file (PDF or not) if it is valide. If you want to keep the XAPMeta object, don't delete this object in ProcessSubstring().

Reading fields from a text file

Hi, I'm fairly new to this so bear with me.
This is for an assignment - the idea is to cretae an online system for booking seats at a cinema - haven't got past the login stage yet?
I've got an applet that needs to read in a field from a text file.
I'm using the StringTokenizer function.
I've put a test in to check that the applet can find the file, which seems to be ok.
However, it's not reading from the file.
Te file is a simple text file - fields are seperated by a comma and a space.
Any ideas?
Please help as this is quite urgent.
Prototype Code is below
public class cinema extends Applet implements ActionListener, ItemListener{
private List ActionList;
private int listIndex;
TextArea t = new TextArea(5, 30);
private Button gobutton, writebutton, login, logout;
private PrintWriter suggestfile;
TextField Userid, password, enterField;
private int count, checkuser;
private BufferedReader firstn;
File myFile = new File("e:\\Ian\\Unistuff\\2nd Year\\se2\\cinema2\\src\\cinema2\\member.txt");
//Construct the applet
public cinema() {
enterField = new TextField("Please enter user ID and Password");
enterField.setEditable(false);
add(enterField);
Userid = new TextField(3);
add(Userid);
password = new TextField(10);
password.setEchoChar('*');
add(password);
//Initialize the applet
public void init() {
BorderLayout borderLayout1 = new BorderLayout();
//some code ommitted
t.setEditable(false);
add(t);
gobutton = new Button("Go!");
add(gobutton);
gobutton.addActionListener(this);
public void actionPerformed(ActionEvent event) {
if (event.getSource() == gobutton) {
try {
firstn = new BufferedReader( new FileReader(myFile));
catch (IOException e) {
t.setText("Member database missing - please contact Chairperson");
return;
try {
String line1;
boolean found = false;
while (( ( line1 = firstn.readLine() ) != null) && (! found))
{StringTokenizer token1 = new StringTokenizer (line1, " ,");
                          String user = token1.nextToken();
                             if (Userid.getText().equals(user))
                               { found = true;
                                 t.setText("Hello");
firstn.close();
catch (IOException e) {
System.err.println("Error Reading File " + myFile + ": " + e.toString());
Here's the text file:
Ian, Dodson, 001, rubbish
Joe, Bloggs, 002, medway
Bill, Smith, 003, unique
Guest, , Guest,
To test that it is working, it should just put a message in the Text Area, but nothing happens when you press the "go" button.

1. Your applet will not work, because it is trying to
read file from local disk.
2. This task can be solved by simple CGI script
(which is much more common and universal thing than
java), so you do not need to use java if you want to
send 3 lines to a server.
3. See examples and read some books.1. Stated the obvious.
2. This is a java forum, not Perl.
3. Pathetic and patronizing.
Very helpful.

Reading text from a text file(what else!!!!!)

okay to save time here i've managed to read the text from the text file and display in the console
my question is - is there a way to read the text a character at a time, at present i read it as a string, the reason i need a character is that i have to check each character to check for brackets ({[ and [})
public void loadFile() {
 JFileChooser fLoad = new JFileChooser();
fLoad.setFileSelectionMode(JFileChooser.FILES_ONLY);
int result = fLoad.showOpenDialog(this);
File file = fLoad.getSelectedFile();
if(file == null) return;//if no file selected return
 String text = new String();
try //exception handler
BufferedReader input;
 input = new BufferedReader(
 new InputStreamReader(
 new FileInputStream(file)));
while((text = input.readLine()) != null) //print it out, line by line
 char array[] = text.toCharArray();
 checkFile(array);
 System.out.println(text);//test case
input.close();//close file
as listed i have attempted to fill a char array with the characters from the string but when i try to access the array with
public void checkFile(char array[]) {
 for(int i=0; i<array.length;i++) {
 if(array.equals("(")) System.out.println("(");//doesn't work
 System.out.println(array[i]);//works
the if loop gives me an error
C:\Documents and Settings\korbitz\Desktop\bracket\Bracket.java:168: char cannot be dereferenced
any help will be appreciated

if(array.equals("(")) System.out.println("(");//doesn't workinstead try
if(array.equals("(")) System.out.println("(");
You could also try the String methods myString.indexOf() (but you'd have to do one for each char you're looking for)
A better alternative might be using a StringTokenizer
StringTokenizer stk = new StringTokenizer(myString, "({[]})");
if(stk.countTokens()!=1)
// then you must have a bracket/brace dividing your string
}Good luck,
Radish21

Read images from external jar file (Sun's Java L&F Graphics repository)

Hi!
I don't know how to read images from an external jar file. Sun has a Java Look and Feel graphics repository that contains a lot of good images that can be used on buttons and so on. This repository is delivered as a jar file, containing only images, and I want to read the image files from that jar file directly without including them inside my application jar file. The application and image jar files will be in the same directory.
I have absolutely no clue how to solve this. Is it necessary to include the images inside my application jar file or is it possible to have them separate as I want.
Would really appreciate some help!
Best regards
Lars

Hi,
There is two ways :
1) Add your jarfile to the classpath.
Use the class loader :
URL url = ClassLoader.getSystemResource("your/package/image.gif");
Image im = (new ImageIcon(url)).getImage();
or
Image im = Toolkit.getDefaultToolkit().getImage(url);2)If you don't want to add the jar to the classpath you can use this (under jdk 1.4):
import java.util.*;
import java.util.jar.*;
import java.awt.*;
import java.io.*;
import java.awt.image.*;
import javax.imageio.*;
public class ImageUtilities {
     public static Image getImage(String jarFileName, String fileName) {
          BufferedImage image = null;
          try {
               JarFile jar = new JarFile(new File(jarFileName), false, JarFile.OPEN_READ);
               JarEntry entry = jar.getJarEntry(fileName);
               BufferedInputStream stream = new BufferedInputStream(jar.getInputStream(entry));
               image = ImageIO.read(stream) ;
          catch (Exception ex) {
               System.out.println(ex);
          return(image);
}I hope this helps,
Denis

How can I read "Keys" from a Config File that have square brackets in them?

I'm using the "Read Key (String).vi" from the config.llb and I'm having a problem because the key names in my file have square brackets in them. I'm creating an VI to read certain pieces of the TestStand �StationGlobals.ini� file and array elements appear as %[0] = "blah blah blah". It looks like they're not getting recognized at all. Is there a way to handle this?

I was just looking at the code inside the configuration VIs and the way they work under V6 is that the Open VI actually reads the contents of the configuration file, parses it (in nice-platform independent G) and stores it in a fancy LV2-style global called the "Config Data Registry.vi". The routine that does the parsing is called "String to Config Data.vi". My gut reaction is that this code is going to be the same in your version because between sometime prior to V6 of LV, NI changed the location of a couple terminals on the low-level Match String function and it looks like when this code was originally written the terminals were in the old configuration.
In any case, if your square-bracket containing strings are getting lost, this is probib
ly where it's happening at. The other place to check is in the read VI itself. The V6 VI for reading the configuration registry is called "Config Data Get Key Value.vi". It's output is then further parsed by a function called "Parse Store String.vi" if the "read raw string?" input is set to False (the default position).
Given that all the code for these functions are written in LV, you should be able to fix your VIs to read the strings you have in the ini file now. Which IMHO is actually the way they should work.
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Reading & writing from MS Excel files in Webdynpro ABAP

Dear experts,
We have a requirement to read and write from an MS excel file in a Webdynpro ABAP based application. The application would be deployed on WAS (Web Application Server) which is running as part of SAP ECC on UNIX platform.
What is not clear is
1) If we store the MS Excel template on the server which has UNIX, will the file be recognised for reading/writing programmatically in Webdynpro ABAP? If this works, we have a requirement where the end users will download the excel template and upload the same after filling data into the excel file. The data filled into the excel has to be read and updated in the SAP backend (ECC).
2) There is an article on "Modifying Excel using WD ABAP" at the following link
https://wiki.sdn.sap.com/wiki/display/WDABAP/ModifyingexistingexcelsheetusingWDABAP
But again it is not clear whether this approach will work on Unix based SAP server (ECC WAS).
Thanks
Suresh

I don't know if there is an application in Unix that can read Excel files - if that is what you are asking. However that has nothing to do with this forum. If you are uploading the file to ABAP using Web Dynpro ABAP, then it doesn't matter what Operating System the server is running on. Unix, Linux, Windows - all the processing is done in ABAP and is OS independent. The actual reading of the file in ABAP involves reading either an XML or Text Tab Delimited version of the Excel file however - if you read through the links on manipulating Excel in ABAP.

Reading objects from a binary file works but crashes LabVIEW on exit

I've been hunting for the source of some crashes on LabVIEW exit and I was finally able to track it down to this. In my application I wrap measurements into objects that I stream into a binary file during the inspection. In another application I read the file again to browse and analyze the measurements. All this seems to work just fine except that the reading part causes LabVIEW to crash once I close the IDE. Built applications don't report any crashes but I am afraid if it might still cause some instability or unexpected behaviour.
The snippet below represents the writing and reading scheme I use and with which I am able to reproduce the problem every time. I attached the project for testing it.
Parts from the internal warning report:
#OSName: Windows 8.1 Pro N
#AppName: LabVIEW
#Version: 13.0f2 32-bit
DWarn 0xEFBFD9AB: Disposing OMUDClass definition [LinkIdentity "Class 1.lvclass" [ My Computer] even though 1014 inflated data instances still reference it. This will almost certainly cause a crash next time we operate on one of them.
Possible path leak, unable to purge elements of base #0
The full log is also attached.
Notes:
Remember: the reading works without any problems, the crash after LabVIEW exit is what I'm concerned about
Seems to only happen with classes/objects—not the default LabVIEW Object, though
Prepending array size or different byte orders make no difference
The writing is time critical, the reading is not, in case you wish to suggest other options
Has anyone else run into this? Should I be concerned for the built applications or can this be simply ruled as an IDE problem?
Solved!
Go to Solution.
Attachments:
test_project.zip ‏16 KB
lvlog.txt ‏5 KB

Right off, if you say you can read and write lv objects, try casting your object as a lv object before saving it. The lv object is the ultimate parent of all classes.
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Having trouble with reading hex from an input file - please help

Hi, I have a txt file with rows of hex, and I need to read each line and add it to an int array. So far I have:
BufferedReader fileIn = new BufferedReader(new FileReader("memory.txt"));
 int count = 0 ;
 String temp = fileIn.readLine();
 int file_in = Integer.parseInt(temp) ;
 while(temp!=null) {
 data[count] = file_in;
 temp = fileIn.readLine();
 file_in = Integer.parseInt(temp,16);// Integer.parseInt() ;
 count++ ; /* increment counter */
 } memory.txt:
4004000
4008000
3FDF4018
4108200
3C104001
FFFFFFE8
4010C6C0
FFFFFFE8
94000000The above code crashes on the third input (my guess is becuase there are letters in and it can't parseInt letters.
I think I need to parse it into an array of chars instead, however I don't know how to get from the string (temp) to the char array.
can anyone help?

ok turns out it's just a null pointer exception on the data[count] line, becuase I've only initialised the first two slots of data. i didn't see it before becase it was just throwing an error and i never printed it out.
here's how I've defined data:
in the class
int[] data;just before the code to input the file data:
for ( int i = 0; i < length; i++ )
 data [ i ] = 0;thinking this shoudl go through all the array and initialise it. but it gives a NullPointerException on the data=0; line.
any ideas?
Edited by: rudeboymcc on Feb 6, 2008 10:50 PM
Edited by: rudeboymcc on Feb 6, 2008 10:51 PM

Reading data from a serialized file(Data is in special characters &symbols)

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