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Java I/O Q&A » Operation » write 2 

1. Reading and Writing Strings    coderanch.com

Hi guys. I am new to Java (real new!) and am trying to write a small I/O program. Opening and closing files is not a problem, but what I am haveing trouble with is a) reading a line and then (possibly) manipulating this line using some of the tokenizer functions, and then writing this line to a different file. I am ...

2. Data lost when writing object to a file    coderanch.com

Can you post your code here. What exactly do you mean by losing part of data? I am doing it the same was as yours and it works fine for me. import java.io.*; public class Test { public static void main(String args[]) { MyObject my = new MyObject(); my.a = 1; my.b = "One"; my.c = '1'; try{ FileOutputStream ostream = ...

3. Read from 2 files and write to the third file    coderanch.com

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 ...

4. Write File    coderanch.com

5. Reading two files and Writing into another single file    coderanch.com

Hi, I am reading two files,concatenating the complete data and inserting into new file. I have written the following code.It is working for only Text format.Could you please tell me why this is not working for other formats like doc,rtf etc.Please advice me if you know a better way to join two files. The code is as follows: class FileTest { ...

6. Does Not Write To A File    coderanch.com

I have this little program (shown below). The program gives me the expected output and I can print the output to the console System.out.println(result); I also want to write the output to a file. However, the program does not write anything to the file I specified. I got a blank file. What mistake did I make? import java.net.*; import java.util.regex.*; import ...

7. Help with writing data into a file    coderanch.com

Thanks in advance for the help, I am retreving ProvId, Role, SSN, Lname,Fname from backend. I need to write the above mentioned Strings in this order into an AscII file in one line since i will getting multiple Strings of each mentioned above. prov_id char(12) role_cd char(1) SSN_NUM char(9) last_nam char(30) fst_nam char(20) Currently since i have ...

8. Handling of back slash (\) while writing to a file.    coderanch.com

Hi All, I need to read certain fileds from database and write them to a .txt file of fixed line length. Each column of data is fit to a fixed length either by truncating or by padding accordingly. But when by chance back slash (\) is part of data I read, after writing to a file, one character decreases as back ...

9. Writing to a crontab file    coderanch.com

11. Reading and Writing to a sector on a harddrive or floppy    coderanch.com

You may be able to use RandomAccessFile or FileChannel. They have the seek-read-and-maybe change-without-recopying-everything functionality you describe. However I don't know if there's a way to specify a particular sector - can this be represented by a file name (and thus a File object)? This may be too OS-specific. You might need to use JNI to connect to a C function ...

12. Write a file to local machine    coderanch.com

13. Reading and Writing files    coderanch.com

Hi, Can anyone give me some example code that would help me achieve the following? 1.Read few pipe delimited files from one directory. 2.Write to a file that will contain data from the previous file and some hard coded zeros, space or something else in a flat file. 3.Then put these newly generated files into another directory. For example: HDR|101707|20010130|TEST|1||||||||||||||||||||||||||| to ...

14. Not able to write the whole content    coderanch.com

A friendly place for programming greenhorns! Register / Login Java Forums Java I/O and Streams Not able to write the whole content Post by: Shanmugam Muthukumarasamy, Ranch Hand on Aug 20, 2003 17:46:00 Hi All, I am trying to read one text file and I am removing some unwanted words and characters from that and then trying to write ...

15. Creating and Writing a file    coderanch.com

Hello, In my Java program, I am creating a file followed by datetime (ie, TowerDetail09-10-2003-03:28:04.doc) and writing into it. I am getting this error:- Exception in thread "main" java.io.FileNotFoundException: TowerDetail09-10-2003-03:28:04.doc (The system cannot find the file specified) at java.io.FileOutputStream.open(Native Method) at java.io.FileOutputStream.(FileOutputStream.java:176) at java.io.FileOutputStream.(FileOutputStream.java:131) at TowerDetail.main(TowerDetail.java:30) *************** The snippet of the code is: java.util.TimeZone tz = java.util.TimeZone.getTimeZone("EST"); java.util.Date now = new ...

16. Writing to System.out or a file    coderanch.com

I have a method that does reporting of statistics. I need to be able to have it write to either System.out or to a file, based upon the object passed to it. I would imagine this could be done using outputstreams, but I don't know how to do it. Thanks to anyone who can provide any assistance. Chris

17. writing to file    coderanch.com

Hi I have created a jfilechooser in my program when the user clicks on the save button. What i want to do is then let the user specify the file (or create one) and then write to it via a fileoutput stream but i am having problems with my file references - the complier doesnt like the value file as the ...

18. Writing to File    coderanch.com

can somebody finsih the code for me!!! it creates a file called temp.txt but doesnt write into it. import java.io.*; class fileAccess { public static void main(String[] args) { fileAccess fa = new fileAccess(); fa.fileReader(); } void fileReader() { try { FileReader fr = new FileReader("rule1.xml"); BufferedReader br = new BufferedReader(fr); FileWriter fw = new FileWriter("temp.txt"); BufferedWriter bw = new BufferedWriter(fw); ...

19. writing file name as date/time    coderanch.com

You want a java.util.Date to represent a particular date/time, and then a DateFormat (specifically a SimpleDateFormat) to convert that Date into a String. E.g. private static final DateFormat FILE_DATE_FORMAT = new SimpleDateFormat("MMddyyHHmmss"); ... Date now = new Date(); // by default, represents the current time String fileName = "file" + FILE_DATE_FORMAT.format(now); Pay attention to the difference between upper and lower case ...

20. Writing contents of a TextArea to a File    coderanch.com

Define what it is you want to save to a text file. You can write an object to a text file, but it's gonna be a bunch of nonsense since Java is writing the byte representation of the object into the text file. If you want to write data from the object, then you need to specify what sort of data ...

21. Writing Documents    coderanch.com

22. networked file reading and writing    coderanch.com

If you are reading and writing a file, the network file system should be transparent to your application since the appropriate layer of the operating system will handle the inner details. So in answer to your question, yes, using a FileWriter and FileReader object for network-based files should be suffice! Hope this helps!

23. Efficient way of writing to file    coderanch.com

I have a batch process that writes an output of 155 MB file to disk. When I observed the progress, it looks like it takes 10 minutes to write first 10 MB, about 20 minutes for the next 10 MB and so on. I used Writer out = new PrintWriter(new BufferedWriter(new File Writer(fileName)), true);//true for auto flush out.write(String); Is this the ...

24. read and write a file    coderanch.com

I am a newbie in Java, and have a qustion about reading and writing a file. Suppose a file in d:/test.txt (a char file), pls tell me how to read (input) and write out(output) a file. A simple example is enough. Thanks all - li (anybody tells me that this is a correct group I am in for the qustion ?) ...

25. write newline(\n) back to file    coderanch.com

26. best way to write large data to file..    coderanch.com

Hi, I have to write large volume of data fetched from database to a file. My data is initially is a two dimensional array as returned from data access classes. I need to generate a csv file. So I am going through the array and using StringBuffer to create the data that is written to file typically by FileOutputStream. (StringBuffer.getBytes()) I ...

27. writing to a file    coderanch.com

Hi I have written a program which takes the number from the user then calculate the factorial on that number and then create the file like 1.txt,2.txt and so on then write the factorial to this file but my problem is that iam able to create the file but iam not able to write it to the file iam enclosing the ...

28. What is the best approach to write result set data to flat file?    coderanch.com

Common problem. The end-of-line marker varies from platform to platform and simple-minded programs like Windows Notepad can't tell the difference. Windows uses "/n/r", Unix '/n' and Mac '/r'. Since Java is designed to be cross platform one can obtain proper marker in a couple of different ways: System.getProperties("line.separator") will return it as a String. java.io.PrintWriter.println() will append the proper separator with ...

29. Writing memory efficient file IO code.    coderanch.com

The following java app reads an entire file in using a BufferedReader(new FileReader). Why is it that reading a 5 mb file uses about 35800 K of ram? There must be a better way to do FileIO. Now I know I can use RandomAccessFiles to read chunk by chunk, but I'm just curious why java uses so much memory to read ...

30. Problem with charset while writing String to File    coderanch.com

Hi All, I am trying to write a method that writes a String into a file: -------------------------------------------------------------- private synchronized void saveTicketsToFile(String inTickets){ try{ String fullPathFilename = "D:/learn/e_ticket.dat"; BufferedWriter writer = new BufferedWriter(new FileWriter(fullPathFilename)); writer.write(inTickets); writer.flush(); writer.close(); } catch (Exception e){ System.out.println("ERROR: " + e); e.printStackTrace(); } -------------------------------------------------------------- However, everytime I run this program, I always have the following error: ERROR: java.lang.IllegalArgumentException: ...

31. Reading a UTF-8 file & Writing it to a UTF-8 file    coderanch.com

Hi guys, I'm trying to read an XML file that has Chinese characters in it & then output it to another XML file. But my output displays ??? when I open it with wordpad/IE. Using WordPad, I pasted some Chinese characters which I got from website & saved the file as an Unicode document (infile.xml). The input file displays the characters ...

32. write file dynamicly    coderanch.com

I want to make a file on the webserver then make it downable. To make the txt file I have to define the whole path like C:\tomcat\webapps\mywebapp\file.txt. Thats works fine ONLY if tomcat is installed on that location. If I move mywebapp tp an other tomcat server (colud be located F:\tomcat) it wont work Is there a dynamic solutions for this? ...

33. able to create a file but can't write??    coderanch.com

Hello, THis is a follow up from my previous post. I'm able to create a file but can't write to it. This is my code: BufferedWriter out = null; String filename = "C:\\froogle.txt"; try{ // File output = new File(filename); out = new BufferedWriter(new FileWriter(filename)); } catch(IOException e){ System.out.println("could not create file"+e.toString()); } try{ out.write("product_url" + "\t" + "name" + "\t" ...

34. File , read and write    coderanch.com

hi i m not too sure with the Java I/O with files and things . i hope anyone can help i will buy them a pint . my problem is i need to develop a java program for a module (the lecture is not very nice)- after i develop the porgram i need to turn that to JAR files. that's how ...

35. writing a temp file    coderanch.com

Can some one give a pointer as to what the best practice is when writing and renaming a file. I write a file to a directory with a file extention .csv.tmp so a cron job will not ftp my file before it has finished being written, close the writer etc.. now I take my file and rename by removing the .tmp ...

36. Best way to handle huge write operation    coderanch.com

Hi, I've around two million records in database and need to put it in a flat file. What is the best way. I've tried BufferedWriter but ended up getting java.lang.OutOfMemory exception though I use 'out.flush()' for every record. And also I invoke java with maximum heap size like, 'java -Xms1024m -Xmx1024m' Any suggestions to handle this kind of massive operation. Thanks. ...

37. read write component    coderanch.com

Hi folks, Sorry, I think I was not so clear earlier. I was asking about a "third-party tool" that is built on java.io; just call two three methods and your work is done. I want to save myself a bit code that is all. Java io is not that difficult. Actually, what I require is an api in which save() delete() ...

38. Writing to file problems    coderanch.com

Hi Thanks for any help i got with my last problem, an other small problem i have. I'm tring to use a gui to write information to a file, its compling with no errors, creates the file but won't write any thing to it. I have it inside the try and catch no luck i've tried it out side the try ...

39. Reading and Writing Chinese Characters from file    coderanch.com

Hi Guys, I need help on reading and writing of Chinese characters encoded as UTF-8(but they are not in the u\xxxx) format. If you open it in Notpad, you will be able to view the chinese writings in it. What I need to do is read thru the file(saving the data in ArrayLists and VO's) and rewrite it down to a ...

40. Write to multiple files    coderanch.com

I'm writing a program that reads a text file, line by line. The values are not in any particular order. Here is an example of the data in the file: GIUO 1KB YUTE 2KB POIFE 3KB TTEE 0Items OIOIU 1KB EWWW 3KB I want to create a file that puts values with 1KB in there own file, values with 3KB in ...

41. Writing .ico files    coderanch.com

Hi! I need to read some image file (or make one) and output to a .ico file, but I don't know how to write an .ico file. Please note: I don't need to write .ico files consisting of several images! Are there any documentation (fileformat explanation) or examples to how I might convert an image to a .ico file? Some sources ...

43. write to the beginning of a file    coderanch.com

That's just not supported by any file system I know (except maybe VM/CMS) or Java IO. You'll probably have to write a new copy of the file. Here's something I drag out for this kind of copying: while more read Original write Temp end while rename Original to Backup rename Temp to Original erase Backup

44. Writing a String    coderanch.com

Hi all, I want to write a string to a file: Below is the coding I used: import java.io.*; class FileOutputStreamEx { public static void main(String args[]) throws IOException { FileOutputStream fos = new FileOutputStream("b.txt",true); //fos.write('H'); it's working fos.write("Hello",getBytes()); // not working } } Error Message: FileOutputStreamEx.java:8: cannot resolve symbol symbol : method getBytes () location: class FileOutputStreamEx fos.write("Hello",getBytes()); ^ 1 ...

45. Unable to write .js file in the client machine    coderanch.com

All, We have a requirement wherein data retrieved from the database needs to be written to a .js file and stored in the client machine. This is to achieve optimum performance. When i try to access the site from the same machine that hosts the webserver the file gets written and I m also able to read values from the written ...

46. How to correctly use this read() write()    coderanch.com

Hi, I have a method. The problem is that it copies last few ending lines to the end of outputfile. Any solution? Method is: public static boolean readWrite2(String inputfile,String outputfile){ //long start=System.currentTimeMillis(); try{ FileOutputStream fos=new FileOutputStream(outputfile); BufferedOutputStream bos= new BufferedOutputStream(fos,100); // beware OutputStream/Writer writes to file FileInputStream fis=new FileInputStream(inputfile); BufferedInputStream bis= new BufferedInputStream(fis,100); byte [] readBytes=new byte[1024]; File file=new File(inputfile); length(); ...

47. problem with writing the file    coderanch.com

i havv to write to the file that deletes the old contents of the file and writes the new data.but the writing is performed by appending to old data in the file TransformerFactory tFactory = TransformerFactory.newInstance(); Transformer transformer = tFactory.newTransformer(); DOMSource source = new DOMSource(rootNode); FileOutputStream fos= new FileOutputStream("D:/jspp/web.xml"); fos.flush(); StreamResult result = new StreamResult(fos);

48. Reading and Writing to a File    coderanch.com

I am having a problems which i will like assistance from you guys. I am using FileInputStream and FileOutputStream to read and write from a file. They both worked but i am having problems with both the Reading and the Writing. Reading with FileInputStream: I noticed that i can't specify the read of the file i want to read and that ...

49. problem in writing object    coderanch.com

class Car implements Serializable{ .......... } import java.io.*; class Carwrite{ public static void main(String[]){ Car c1=new Car(--); Car c2=new Car(--); Car c3=new Car(--); FileOutputStream fo=new FileOutputStream(); ObjectOutputStream oo=new ObjectOutputStream(fo); oo.writeObject(c1); oo.writeObject(c2); oo.writeObject(c3); oo.flush(); fo.close(); } } When i write this code for writing the objects of a class Car i just read only last object.Will u tell me how can i ...

51. Override java.io.File to write to memory?    coderanch.com

OVERVIEW: I'm working on a scanning project where I scan documents and upload them to an IBM iSeries Server using a propriety mechanism IBM calls IFS (Integrated File System). The project is an applet. I'm using this to create my TIFF images: http://asprise.com/product/jtwain/javadoc/index.html NEEDED: My problem is that the createTIFFFromImages method wants to write to a file on the file system; ...

52. Reading and Writing Large Files    coderanch.com

Hi, Iam trying to read a file of size 50MB by using a RandomAccessFile and iam trying to place that whole data in a String object. But iam getting an exception. Program: RandomAccessFile raf=new RandomAccessFile("one.txt","r"); //size of one.txt is 50MB int len=(int)raf.length(); byte[] fileInData=new byte[len]; raf.read(fileInData); String fileData=new String(fileInData); Output: "Exception in thread "main" java.lang.OutOfMemoryError" Is there any option to change ...

53. How to write to a file in exact position?    coderanch.com

Hi ranchers, I intend to modify and add data in my file of *.db .For example one of my requirement may be this : change the char of 'E' in position of 57th charactor counting from the file's beginning to char 'I'.For another example I want to add a string at the end of file with a length of 64.What output ...

54. Writing in chunks    coderanch.com

I would like to copy the contents of a file (size 6 kb)to another file. This is the program that I have written and it is works fine. import java.io.*; public class FileRead { public static void main(String args[]) throws Exception { InputStream istr = new FileInputStream("C:\\myfile.txt"); OutputStream ostr = new FileOutputStream("C:\\myfileout.txt"); byte[] buffer= new byte[64000]; int len; while ((len = ...

55. Write and Read Object to File    coderanch.com

sorry for disturb.... what i want is to read and write a object... i want to put all my data in one my own class and write them together in files...because data that i want to write.. it is so many and large... i found that PrintWriter can do it by using method: write(object o); but i can't found any build-in ...

56. reading from one file, calculating, writing to another...    coderanch.com

Hey guys/gals-- I'm back for another adventure... I have to disclose that I'm, not only a Java newbie, but also a OOP newbie as well. I also have to mention that this is part of my homework for an IS class. Please don't run away when you hear that it's part of my homework. I'm really trying to learn this for ...

57. Reading and Writing a file    coderanch.com

58. Not writing to new file...    coderanch.com

Hey all! This window is part of a project I'm working on. It is supposed to take in a customer's ID number and validate it (the validation as far as I've tested it works perfectly fine). A new file, rewritten.txt, is then created. It reads from the customer information file and rewrites the customer information file to it, making any changes ...

60. PDF writing woes    coderanch.com

Hi, I'm trying to write a simple program that will read and write PDF documents - however, I'm having a few problems with the code. My program seems to read the document fine, but will not write it out again properly. Comparing the two files side by side before and after writing, it appears there's a small number of control characters ...

61. Unable to Write the file in UTF-8    coderanch.com

Hi All, I am unable to write the file in UTF-8 by using the OutputStreamWriter but when i used the "unicode" every thing working fine. Code : BufferedWriter oBufferedWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(theResultFile.toString(), true), "UTF-8")); oBufferedWriter.write(str) The String which is specified above only contains the Numeric value and English Characters like this : str = "10000000001 E01" When code is ...

62. Problem with file and writing UTF-8 information into file    coderanch.com

Hi Thank you for reading my post I have a problem with reading some UTF-8 information from a file and writing it as UTF-8 into another file. imagine , i have a file that contains some utf-8 text ,(i can read them in windows using notepad/wordpad) Now i want to write a java application to split the file into some more ...

63. Test for complete written file    coderanch.com

Hi, Would anyone be able to suggest a way that I can test if a file is done being written to? scenario: 1. server 1 writes an XML file to a DFS location. This file can potentially be large. 2. (I thought when we were 'done' writing the file) a JMS message is sent to server 2 to read that XML ...

64. read a file while it is being written    coderanch.com

If there is a file whose content is "hello world." Thread A tries to write to the file and change the content into "how are you ?", while thread A is in the middle of writing to the file, thread B tries to read this file. what will thread B get ? 1. thread B will still read "hello world" since ...

66. Write File to Harddrive    coderanch.com

68. Wait for file to be completely written    coderanch.com

69. problem with reading and writing toa files    coderanch.com

Hi guys, i m having problem with reading the large file and splitting the file inot multiple files.. the sample large file as follows: ================================ the number is the file number name is a1.txt 823 3232 232 233 3232 end number the number is the file number name is a2.txt 823 3232 232 233 3232 end number the number is the ...

70. file read and file write    coderanch.com

72. Writing Chinese Characters to a File    coderanch.com

Hi, I have these chinese characters stored in the database in NCR format eg: &# 25705;&# 26681;&# 22823;&# 36890; -->Something like this (I've purposely added the space after &#). When you view these characters in the browser - they appear as chinese. So I need to write these characters to an excel file (CSV), and in excel file they would not ...

73. Write to files that are readonly    coderanch.com

I didn't mean to imply there is no good reason ever. Just that if the file is not specific to your app and is read-only, you better have a pressing and legitimate need, else you can find yourself in a security "quagmire". Java 6 is out now, and it seemed to be a quiet release. Not as much fanfare as 1.5 ...

74. different behaviour in writing to a file    coderanch.com

Hello Ranchers! I'm trying to make a program to read from a file and for each line in the file substitute space charachters (1 or more ("\s+")) with 1 tab ("\t"). Then the line is written to a new file. The class works fine on my xp laptop with Eclipse at home, while it writes just little squares in the output ...

75. IO-read() write() methods    coderanch.com

I am doing basic programs of Java IO I read , read() ,write() methods of both ,Stream-classes & Character IO work with ints . read() returns int so must be caught in int variable. To write(),we write int. now i have 2 Questions . 1. when i try wrting char in write(),it doesnt show any error ,even when we dont have ...

76. strange problem writing UTF8    coderanch.com

77. writing UCS-2 encoded files with Java    coderanch.com

Is there any way to write a UCS-2 file from a Java application? We have a utility, written in Java, which reads and exports Oracle data as UTF-8 files which can then be imported by PostgreSQL. We would like to expand the utility to support import by Microsoft DB products which apparently do not recognize UTF-8 and instead require UCS-2. When ...

78. Writing to a file    coderanch.com

Here's what I want to do. I have a recursive method that builds combinations of things. It doesn't matter what. I'm generating data to use in some research. I want to write this data to a single file. Here's what I tried. I tried creating a very large array of this data and write it out all at once but the ...

79. Writing data into the same file.    coderanch.com

Hello, I want to write data (int) into a files, but I don't want to erase the file's contents. I mean, I want to fill the data I get into a file. How do I do that? So far in my code, the current data always overwrite the last data. Thanks in advance.

80. got stucked on executing a .sh file in java which has been written by java program    coderanch.com

package HX; import java.net.URL; public void convert() { //URL u; BufferedInputStream in; FileOutputStream out; Tidy tidy = new Tidy(); //Tell Tidy to convert HTML to XML tidy.setXmlOut(true); try { //Set file for error messages //tidy.setErrout(new PrintWriter(new FileWriter(errOutFileName), true)); //u = new URL(url); //Create input and output streams in = new BufferedInputStream(new DataInputStream(new FileInputStream ("////home//rakesh//stuff//index.html" ))); out = new FileOutputStream("////home//rakesh//stuff//mn.xml"); //Convert files ...

81. IOStreams - Writing & Reading to a File    coderanch.com

Hello, I'm new here & to Java also - I'm learning as quickly as I can. But I'm havin understanding problems with 'File Handling': I need to use a 'File'(.txt/.dat) to store records of customers. I hav just learned 2 Kind of Files: 'Sequential' & 'Random Access' 1. Firstly, can someone tell me which of the 2 files I need to ...

82. problem in reading and writing a file    coderanch.com

hi, package com.test; import java.io.BufferedInputStream; import java.io.DataInputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; /** * This program reads a text file line by line and print to the console. It uses * FileOutputStream to read the file. * */ public class FileInput { public static void main(String[] args) { File file = new File("C:\\MyFile.txt"); FileInputStream fis = null; BufferedInputStream ...

83. How to write to a file    coderanch.com

Guys, I want to write to a file using the Charset API/UTF-8 encoding format. Basically I have a StringBuffer whose contents are in html/ASCII format. I want to use the Charset API and convert this to UTF-8 format and then write the o/p to a file. Any ideas on how to do this?

84. where is this writing to ?    coderanch.com

Sample code I found on web trying to write an ftp client for my new rack. URL url = new URL("ftp://username :-P assword@ftp.whatever.com/file.zip;type=i"); URLConnection con = url.openConnection(); BufferedInputStream in = new BufferedInputStream(con.getInputStream()); FileOutputStream out = new FileOutputStream("C:\\file.zip"); int i = 0; byte[] bytesIn = new byte[1024]; while ((i = in.read(bytesIn)) >= 0) { out.write(bytesIn, 0, i); } out.close(); in.close(); I don't ...

85. write into BufferedOutputStream    coderanch.com

86. write into a file?    coderanch.com

87. diff between write and println function    coderanch.com

Please see the program below: //Demonstrate System.out.write(). class WriteDemo { public static void main(String args[]) { int b; b='A'; System.out.write(b); System.out.write('\n'); } } The output is even though b is declared as an integer) A ------------------------------------ If I change write() to println() and then try the output then it is 65. This is not clear. If I comment the last write() ...

88. Writing to file is slow    coderanch.com

I'm writing some data to a file and this writing is done by a method called write(Object obj, OutputStream os). All this method does is query the object and write certain parts of the object into the stream. write(Object obj, OutputStream os) method constructs BufferedOutputStream and uses it. I am calling this write() from two different places and it takes much ...

89. writing large amounts of data to file    coderanch.com

Hi, I'm having problems writing large data strings to a file. The scenario is like this: I have (atleast) 200 data files - each one a Gabor jet of information. Each Gabor jet is simply one line - a String of approximately 200000 characters. In order to create the training file for a Support Vector Machine, I need to read each ...

90. Writing data into file from a String variable    coderanch.com

Hi friends, In a program that i was trying, i have a string variable, which will hold the data that needs to be saved into a file. Now, the variable can contain any amount of text, with many whitespaces, new lines, OR special characters(as shown by notepad for binary data...for example the characters we see when we open image file in ...

91. writing to an existing file    coderanch.com

I have a text file named "my.txt" which has some text content.I need to open the file and append some text content to it.Please help me to do that.I am able to write a new file but have no idea how to append some content Thanks for your help in advance I would be really glad if you could explain this ...

92. Write file even program terminated    coderanch.com

while writing the large file if i terminated the program manually in between means file was only empty.. The data already written was not present. I need to save (like) the content every time i write ... is it possible ?? PrintWriter out=null; try { out = new PrintWriter(new FileWriter("result.txt")); for(long i=10000; i<10006; i++ ){ System.out.print(i+"~"); out.write(i+"~"); if(i%100==0) obj.getLo(i+""); validResponse=obj.get(""); // ...

93. writing to a file on remote solaris machine    coderanch.com

hi, in my java program i have some data which i want to write in the .txt file on remote solaris machine. first timei will create a new file and then after that i will append the data in that file. can i use solaris script to create a new file in my java program ?do you know the script?or else ...

94. File System Write    coderanch.com

Hello folks, I am writing an application in which I need to write into a file some information like: Master file Account number Name Balance 100 Alan Jones 348.17 300 Mary Smith 27.19 500 Sam Sharp 0.00 One row for each record, again when an user require to access his accounts he may enter his account number and the related records ...

95. writing to a local file    coderanch.com

96. writing in a file    coderanch.com

97. How to write a file to local machine?    coderanch.com

Short answer: you can't. This is not strictly a SErvlet or JSP thing, its a HTTP security thing. Otherwise visiting a web page could result in people writing viruses, overwriting properties, or even have Microsoft detect a Linux operating system and overwrite it with Windows One thing you can do is have someone make a request to a Servlet, then have ...

99. reading and write a HTML file    coderanch.com

Hi, I would like to know how to create a HTML file in jsp. because I'm doing program that can create e-cards for christmas. There must be image and music in the html file. I'm not sure how to do this. Can someone help me by providing me with links or sample code would be the best. Thanks..

100. Unable to write .Js file in the client machine    coderanch.com

All, We have a requirement wherein data retrieved from the database needs to be written to a .js file and stored in the client machine. This is to achieve optimum performance. When i try to access the site from the same machine that hosts the webserver the file gets written and I m also able to read values from the written ...

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