1. Write problem - lossing the original data stackoverflow.comEvery time I write to the text file I will lose the original data, how can I read the file and enter the data in the empty line or the next ... |
2. Can apache FileUtils.writeLines() be made to append to a file if it exists stackoverflow.comThe commons FileUtils look pretty cool, and I can't believe that they cannot be made to append to a file. |
3. How to read data from file(.dat) in append mode stackoverflow.comWe have an application which requires us to read data from a file (.dat) dynamically using deserialization. We are actually getting first object and it throws null pointer exception and "java.io.StreamCorruptedException:invalid ... |
4. how to use append function in file stackoverflow.comI want to write in a file but in a way that it should not delete existing data in that file rather it should append that file. Can anybody please help ... |
5. Append data into a file using Apache Commons I/O stackoverflow.comThe |
6. append data into xlsx file through java stackoverflow.comI am using apache poi for writing into .xlsx file.I can write into .xlsx file but I am unable to append new content.How can I append new content in the .xlsx ... |
7. append one file to another stackoverflow.comI want to append the content of fileA to fileB. As fileA is large, I would like to do this in a memory-efficient way, i.e. without reading the entire content of ... |
8. How to append data to a file? stackoverflow.comI trying to write into the txt file. |
9. Unable To append stackoverflow.comThis is the code : |
10. Java Properties Class appending date stackoverflow.comI am using the java properties class to append a value to my config file with this code.(I stripped out error handling and whatnot) |
11. How to add content to files using Java stackoverflow.comI have a result being entered into a file. This result is being done on a loop. So, every time a new result comes, it has to be appended into a ... |
12. how to append data in docx file using docx4j stackoverflow.comPlease tell me how to append data in docx file using java and docx4j. What I'm doing is, I am using a template in docx format in which some field are dilled ... |
13. how do you append to a file in java? stackoverflow.comappendFile: This method should take as input a String filename as first argument and a String extraData as second argument. It should return a boolean. The method should search for the ... |
14. Appending to a file coderanch.com |
15. How to append data to the Logfile with out duplicate values coderanch.comHI, Basically i need to appand data to the logfile.If there is Duplicate data it should not tbe appended.. Here is the piece of code that i have written to append... Any one could help me how to restrict the Duplicate values not to append to the LogFile.. FileWriter frw = null; File logFile = new File (logPath); if(logFile.exists() == true) ... |
16. comparing the file before i append it to the other coderanch.comI have two files that need to be made into one file. The thing is file 1 has records A,B,C,D E and File 2 has records C,D,E,F,G,H. So now my program writes the final record as A,B,C,D,E,C,D,E,F,G,H.(some duplicate records) How can I get the file to just write the built file as ABCDEFGH.(each record is a line long) here is the ... |
17. saving data and appending to it in a file coderanch.comHi, thanks jim.I got the solution,but now i have another problem,i want to save a employee's records in thst file.but here when i add second record first one is getting deleted and the new one is replaced. can anyone help me in code..so that i can save the records and append to the same file here ie the code public class ... |
18. ReadObject(), not Working in Appended File Properly coderanch.comHi pplz I have got the following error when reading records ( appended records ) from a binary file (Object Serialized file) . it read old records perfectly , but when it reaches to recently added record it gives the following error. java.lang.reflect.InvocationTargetException: java.io.StreamCorruptedException: T ype code out of range, is -84 Any Idea, Regards, Kamran |
19. How to append data to a file coderanch.comHmm, you know, I just tried it out, and it works! Here's all I did: import java.io.* ; public class TestWriter { public static void main( String[] args ) throws IOException { PrintWriter writer = new PrintWriter( new FileOutputStream( "test.dat" , true ) ); writer.println( "This is the first test" ); writer.println( "This is another test" ); writer.flush(); writer.close(); } } ... |
20. How to write a file in append mode? coderanch.comHi, I am creating a file and writing into it using FileWriter. I want to append to the file every time I write.So I create fileWriter using FileWriter(filename,true). But still it overwrites the previous contents. Does any one know the solution. Or an alternate way to wirte a file in append mode.This is JDK 1.2 Thanks, |
21. Trouble appending new data to an existing file coderanch.comThanks in advance for any help you all might be able to extend. I'm having a prouble appending new data to a file. Its a character file and I can't get it to not overwrite my old file // lotsa code making a String called output File outputFile = new File("outputPath"); // supposed to set file writing to append mode? FileWriter ... |
22. How do i open a file in append mode for writing? coderanch.comHi all, Can someone tell me how to open a text file in append mode for writing to it? I've used buffered writer to write to the file. But I'm used two such streams in different classes to write to the same file. So it appears that the file is being overwritten by the second. is it possible to open in ... |
23. Appending an object to a file coderanch.comSince there isn't an "append" method in the ObjectOutputStream class, for example, do you first have to read in all the objects from the file into say, a Vector, add the new one, and then write them all back out? Yes, that's one good way. Except I'd say ArrayList rather than Vector. Or you might put separate objects in separate files ... |
24. Appending coderanch.com |
25. Appending file problem coderanch.comHi all I'm have a perplexing problem I hope you can help me with. Here is my problem. I read a line from a text file using BufferedReader: dataFile = new BufferedReader(new FileReader(fileName)); String line = dataFile.readLine(); I write the line as an object to a file using FileOutputStream and ObjectOutputStream: FileOutputStream fos = new FileOutputStream ("file"); ObjectOutputStream oos = new ... |
26. Opening files in append mode coderanch.com |
27. appending to a file coderanch.com |
28. Cannot append data to a file coderanch.comHi Friends, I have 4 java classes: Main class :mrgreen: isplays menu Add class : Adds a new record to the file Here to open the file i use this: oos = new ObjectOutputStream(new FileOutputStream( "file.ser") ); Print class : Prints the record in the file ois = new ObjectInputStream(new FileInputStream( "file.ser" ) ); Bean : Defines the Record. But for ... |
29. Append in File with JDK 1.3 coderanch.comhi, I am in a situation where I have to read a file with chunks andwrite each chunk in another file.If other file file does not exist then create it else append data tothe end of file. Now the problem is how to achieve this append functionality in JDK1.3. I mean i would like to open a file and append some ... |
30. How to append the data into exsisting file ? coderanch.comHi, I am new to java IO API, I hope you guys can help me out here. I have a file that contains the data from runtime Java Application. I am currently using a BufferedWriter to rewrite data to a file each time. All data will be rewrite from the beginning of the file. Indeed, I just want to append the ... |
31. Memory concerns in writting / appending a file coderanch.comHello, We have an application where I need to put huge amount of records in a flat file. The records are text and binary (images) and the size of the file will probably run int0 700 MB to 800 MB. I would be firing various queries/SPs and plan to append the data to the output file (The output file will be ... |
32. Appending data to existing data in a file coderanch.comHi All, I have a req where we read a flat file which contains records line by line and append some additional info to each line when we read it and write the new lines with additional info to a different file. Could somebody pl tell me how do i do this. Thanks! |
33. File append coderanch.com |
34. Appending to an existing file coderanch.comI have a file that I am using as a log file. I want to be able to write to it from within different parts of my program. I don't want to clear the file everytime I open it. I created a method that takes two strings as arguments, one is the filename and the other is the string to write ... |
35. Appending to a file coderanch.comHello all, I'm currently writing a java program that allows a user to input a name that is then saved to a .txt file. It works fine if I run the program once but when I run the program again it adds the data to the same line. Is there a way I can make the program add the names to ... |
36. can we append a new Page to Existing PDF document coderanch.com |
37. how to append data coderanch.com |
38. saving data and appending to file coderanch.com |
39. appending data to file coderanch.com |
40. Appending an object to a file does not work coderanch.comThis is the file which performs the logic public class ReadWriteDataTest { private static void storeuserData(File f, UserDetails userDetails) { try { ObjectOutput out = new ObjectOutputStream(new FileOutputStream(f,true)); //ObjectOutput out = new ObjectOutputStream(new FileOutputStream(f)); out.writeObject(userDetails); out.close(); } catch (Exception e) { System.out.println("Unable to store users, exception : " + e.getMessage()); } } public static void main(String[] args) { UserDetails user = ... |
41. Appending to a file coderanch.comHello all, I'm currently writing a java program that allows a user to input a name that is then saved to a .txt file. It works fine if I run the program once but when I run the program again it adds the data to the same line. Is there a way I can make the program add the names to ... |
42. problem in appending contents of file. coderanch.com |
43. How to append in excel sheet using Java coderanch.compublic class Write2 { private static String lOutputFileName = "C:\\Documents and Settings\\Eclipse\\OnlineAssessment\\WebContent\\Report3.xls"; public void writeExcel(String lOutputFileName,List aOutputLines) { File lFile = new File(lOutputFileName); FileInputStream lFin = null; HSSFWorkbook lWorkBook = null; HSSFSheet lWorkSheet = null; FileOutputStream lFout = null; POIFSFileSystem lPOIfs = null; if (lFile.exists()) { try { lFout = new FileOutputStream(lOutputFileName, true); lFin = new FileInputStream(lOutputFileName); lPOIfs = new POIFSFileSystem(lFin); ... |
44. how can I append two files coderanch.comhai any one tell me how can i append two files in java. but these are the steps to be done: note: directory1 & directory2 contains same files mostly 1- read the file1 from the directory1 // it is fine for me 2- read the file2 from the directory2 // it is fine for me 3- later i need to append ... |
45. Append a message to a file coderanch.comHi all, I'm trying to insert a message into a log file on a Solaris 10 machine via a Java program. Basically I need to run an echo command and append the output into the file: echo "Test message" >> /my/output/file Here's my effort so far: public class Test{ public static void main(String args[]){ try{ Process p = Runtime.getRuntime().exec(" echo \"TeSt ... |
46. How to append to the start of file? coderanch.com |
47. how to append in a file from beginning. coderanch.comhello all, i am doing some file related work at some point i want to append the file from the beginning but i don't know how to do this, please help. i m using File Writer constructor with second argument true for appending in the file but it appends from the end of the file but i want to insert something ... |
48. How to Append in file ? java-forums.org |
49. How to append data to an already existing file? java-forums.orghi, I am trying to write a server program that will handle multiple clients and receives a file from each client. I need to save data from all the clients in a single file on the server. I had written a program, but server each time rewrites the content of the file. Instead of rewriting i need the server to append ... |
50. Appending to a file to write to java-forums.org |
51. Appending string to the start of a file problem forums.oracle.com |
52. Appending data to file forums.oracle.com1) Yes the code is executing 2) The is an SQLException , at this point im calling the errorLog method to write the error to the file 3) In the calling program i set the path for the file, i am looking at the correct file. Edited by: Bekha on Feb 13, 2008 3:19 AM |
53. how to append in file forums.oracle.com |
54. Reading, comparing and appending two files is taking lot of time forums.oracle.com |
55. Reading, comparing and appending two files is taking lot of time forums.oracle.com1) Just compare the byte content - no need to convert to Strings. 2) Compare a block (say 256K bytes) at a time - no need to read the whole file into memory. 3) Compare the file lengths first - if they are different then the content cannot be the same. 4) When appending one file to the other, set the ... |
56. How to append to a file? forums.oracle.com |
57. Writing to end of file Append stuff forums.oracle.com |
58. how to append values to a file? forums.oracle.com...furthermore, unless i was mistaken, i thought this was a new to java forum...excuse me for not knowing all of the details of how to correctly implement some of these methods but the obvious thing to do when you are confused on how to correctly implement something and get errors as a result is to ask questions...i didn't post on here ... |
59. Append to file forums.oracle.com |
60. how can i append string to file forums.oracle.com |
61. Problem while appending data to an already existing file forums.oracle.com |
62. Append to a file in java forums.oracle.com |
63. appending two files forums.oracle.com |
64. java io: why in append mode a new char is added? forums.oracle.comI think the question should really be "Why when I use UTF-16 as my encoding is an extra byte added at the end of the file?" You haven't correctly identified the differences between the two code fragments. Anyway, the answer to the real question is that UTF-16 encodes each character as two bytes. Your default encoding, whatever it is, encodes each ... |
65. ZipOutputStream appending forums.oracle.com |
66. Appending a file using i/o forums.oracle.com |
67. java/html: append information to html file at top, tag forums.oracle.com |
68. Files appended but not loaded forums.oracle.com |
69. File not appended forums.oracle.com |
70. Appending to an existing file forums.oracle.comu mean when i asked about the while loop? I got that portion of the method to work...but now i need to write the temps inputted to the temperature data file, i read that if you pass true to the FileWriter it will append to and existing file, but it isnt writing anything to the file. |
71. File append forums.oracle.com |
72. Appending data to a file forums.oracle.com |
73. shell script executed from java swallows part of files in append - reason? forums.oracle.com |
74. Help - Appending Index Count to Same File Name forums.oracle.comA file is then created for each personalized letter to files.txt. For example: John.txt, Sally.txt, and Megan.txt, and so on. If two people have same name, create a new file by appending an index for the new file. For example, if there was another John in people.txt file, you will create John-1.txt for the new personalized letter. I was told to ... |
75. shell script executed from java swallows part of files in append - reason? forums.oracle.com |
76. Appending data to the beginning of a file forums.oracle.comYou might be able to write the file into one of the Collection Lists that maintain order (like LinkedList, but there are others), add the first line, and then rewrite the file from the list. You might also find the Collections methods reverse and rotate could be useful if you add the data at the end of the list. You could ... |
77. why cant i append objects to a file forums.oracle.com |
78. How to append a flv file contents to another flv file. forums.oracle.com |
79. Appending data to already existing file. forums.oracle.comI have to read a input java file and search for a particular word in that file. As soon as i find the word i have to add a comment to the end of the particular line in the input java file. anyone please tell me how to do this? I have tried with append option but it is appending only ... |
80. bufferedWriter/fileWriter overwrites instead of appending forums.oracle.comFileWriter writer = new FileWriter( fileName, true ); writer.write(savedData); writer.close(); ... i've tried this method as well: BufferedWriter writer = new BufferedWriter(new FileWriter("C:/Documents and Settings/user/Desktop/myproject/bdata.txt")); writer.write(savedData); writer.newLine(); writer.flush(); writer.close(); and this (this one does append but the appended data looks like this "t h i s i s t h e d a t a a p p e n d ... |
81. how to append the data in a file forums.oracle.com |
82. Appending to a file forums.oracle.comIf you want to add more data to them, then you need libraries that know how to do that. I believe the POI project (google for it) provides tools to do it. If you don't want to use POI...then stop using Word and Excel; they're **** anyway. Message was edited by: paulcw |
83. Cant append a file, says "null pointer", how do i stop the file header? forums.oracle.com1) Don't catch NullPointerException - it means you are doing something wrong and is not a standard error. The stack trace it prints out will tell you where you went wrong. I'm only guessing here, but I bet its here: Output.writeObject(record); 2) You can certainly append to a File containing a serialized object graph, but you will not be able to ... |