Reading text files and EOF

I am attempting to read in blocks of data from a text file separated by a blank line. When the BufferedReader hits the first blank line it ends. I retyped the test text file and still cannot get it to continue to read the entire file; just the first block.
fReader = new FileReader( textFile );
bReader = new BufferedReader( fReader );
line = bReader.readLine();
while( line ! = null ){
do stuff;
bReader.close()
The format of my textFile is:
100
some name
type 1
type 2
101
some other name
type 1
type 2
Any suggestions would be greatly appreciated.

Hi,
I saw that BigDaddyLoveHandles already helped you a lot but I wanted to add a little something to that, because from what I understood you need to keep the blocks together.
public static void main(String[] args) {
          BufferedReader theReader = null;
          try {
               theReader = new BufferedReader(new FileReader("pathToYourFile"));
               String line;
               StringBuilder theBuilder = new StringBuilder();
               while ((line = theReader.readLine()) != null){
                    if (line.isEmpty()){
                         doStuff(theBuilder.toString());
                         theBuilder = new StringBuilder();
                    }else {
                         theBuilder.append(line).append(System.getProperty("line.separator"));
               doStuff(theBuilder.toString());
          } catch (IOException e) {
               e.printStackTrace();
          } finally{
               if (theReader != null)
                    try {
                         theReader.close();
                    } catch (IOException e) {
                         e.printStackTrace();
     }This actually allows your method doStuff to get the whole block vs. line by line.
Regards

Similar Messages

  • Read text file and insert into MySQL

    Dears,
    I need to read text file and then insert the data in the correct column in the MySQL database
    example
    I have the following text file:
    field1=1234 field2=56789 field3=444555
    field1=1333 field2=2222 field3=333555
    and so on and so forth ,,note that all rows are identical and just the filed value is changed(there is a dilemeter between fields)
    how can I read field1,field2 and field3 from text file and insert them in the correct table and column in the database.....
    any help?????
    thanks for your cooperation
    Best Regars

    Sure.
    Which part don't you understand?
    1. Reading a text file
    2. Parsing the text file contents.
    3. Relational databases and SQL.
    4. How to create a database.
    5. How to connect to a database in Java.
    6. How to insert records into the database in Java.
    7. How to map Java objects to records in a database.
    This is a pretty nice list. Solve complex problems by breaking them into smaller ones.
    %

  • Reading text file and output (to stdout) a list of the unique words in the

    Hi,
    I have a main method as
    main.java
    package se.tmp;
    public class Main
    public static void main( String[] args )
    WordAnalyzer.parse( args[0] );
    and text file as
    words.txt
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the quick brown fox jumps over the lazy dog
    the requirement is like
    I need create this WordAnalyzer class, implement the parse method, and then commit the file. This method takes a single parameter, the filename of the file to parse. The method should read this file and output (to stdout) a list of the unique words in the file along with the number of times each appears in the file.
    Can anyone please help me on this?
    Thanks.

    Where are you having problems?

  • Reading text file and display in the selectOnechoice list item In ADF.

    Hi,
    I have a requirement to read the text field which have list of strings and that string display in the SelectOneChoice List item component on page load.
    I am using Jdeveloper 11.1.2.3 version.
    Any suggestion will highly appreciated..
    Thanks in advance.
    Regards

    Hi,
    Google will produce you with hints on how to read content of a file from Java (ideally the file uses some delimiter). Then in a managed bean, you read the file and save its content in a list of SelectItem. So your managed bean should have the following property and setter/getter pairs
    ArrayList<SelectItem> listFromFile = new ArrayList<SelectItem>();
    public void setListFromFile(ArrayList l){ //you don't need this }
    public ArrayList<SelectItem> getListFromFile(){
       //read file content and iterate over the file list entries
      for(i=0, i < fileContent.length, ++i){
         SelectItem si = new SelectItem();
         si.setValue(... the value to update the list of value with ...);
         si.setLabel("... the label to show in the list ...");
         listFromFile.add(si);
      return listFromFile;
    }The af:selectOneChoice component should look as follows
    <af:selectOneChoice id=".." value="...attribute to update with selection ..." ...>
       <f:selectItems value="#{managedBean.listFromFile}"/>
    </af:selectOneChoice>Frank

  • Read Text file and count occurences of certain string

    Hello,
    I have a text file with lines of data in it. I would like to read this text file and count how many lines match a certain string of text. 
    For example my text file has this data in it.
    dog,blue,big
    dog,red,small
    dog,blue,big
    cat,blue,big
    If the certain string of text is "dog,blue,big" then the count would return "2".
    Thanks for your help

    Hello,
    Thank you for your post.
    I am afraid that the issue is out of support range of VS General Question forum which mainly discusses the usage issue of Visual Studio IDE such as
    WPF & SL designer, Visual Studio Guidance Automation Toolkit, Developer Documentation and Help System
    and Visual Studio Editor.
    I am moving your question to the moderator forum ("Where is the forum for..?"). The owner of the forum will direct you to a right forum.
    In addition, if you are working with Windows Forms app. please consult on Windows Forms Forum:http://social.msdn.microsoft.com/Forums/windows/en-US/home?category=windowsforms
    If you are working with WPF app, please consult on WPF forum:
    http://social.msdn.microsoft.com/Forums/vstudio/en-US/home?forum=wpf
    If you are working with ASP.NET Web Application, I suggest that you can consult your issue on ASP.NET forum:
    http://forums.asp.net/
     for better solution and support.
    Visual Studio Language Forums:
    http://social.msdn.microsoft.com/Forums/vstudio/en-US/home?category=vslanguages
    Best regards,
    We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
    Click
    HERE to participate the survey.

  • Read text file and split up.  How???

    Can anyone tell me how to split up a string into words.
    The string is: "me and my cat both like milk and cookies"
    I need read through the file and diplay the biggest word(s) and the smallest word(s).
    I would appriciate help on this as i am really stumped
    Thanks
    ..::M::..
    p.s. I also need to be able to do this in C++ but if i know it in java i think the C++ will be simple

    String[] words = "your sentencehere".split("\\s+");
    and now you have array of strings, each containigwords from text.
    this is helpful, is there a version in C++ tooThe short answer for C++ is "no". Unless of course you install one of the regexp libraries available. But there is no native language way to do it like in Java.
    However if they words always have spaces and always will have spaces you can write your C++ code like this:
    vector <string> words;
    ifstream inFile( "file.txt" );
    string temp;
    inFile >> temp;
    words.push_back( temp );
    PS I have not tested this code in anyway but it should be simple enough

  • How to read text file and store in database

    Respected All,
    I have text file on my computer.
    I am using forms6i and oracle 9i.
    I want that when i press button then specifice world in text file is read and dispaly on form to be stored in database.
    Please provide some solution.
    Kind Regards

    Hello,
    Study the functions of the TEXT_IO() package
    http://www.oracle.com/webapps/online-help/forms/10g/state?navSetId=_&navId=3&vtTopicFile=f1_help/oraini/c_text_io.html&vtTopicId=
    Francois

  • How to read a text file and write text file

    Hello,
    I have a text file A look like this:
    0 0
    0 A B C
    1 B C D
    2 D G G
    10
    1 A R T
    2 T Y U
    3 G H J
    4 T H K
    20
    1 G H J
    2 G H J
    I want to always get rid of last letter and select only the first and last line and save it to another text file B. The output should like this
    0 A B
    2 D G
    1 A R
    4 T H
    1 G H
    2 G H
    I know how to read and write a text file, but how can I select the text when I am reading a text file. Can anyone give me an example?
    Thank you

    If the text file A look like that
    0 0
    0 3479563,41166 6756595,64723 78,31 1,#QNAN
    1 3479515,89803 6756588,20824 77,81 1,#QNAN
    2 3479502,91618 6756582,6984 77,94 1,#QNAN
    3 3479516,16334 6756507,11687 84,94 1,#QNAN
    4 3479519,14188 6756498,54413 85,67 1,#QNAN
    5 3479525,61721 6756493,89255 86,02 1,#QNAN
    6 3479649,5546 6756453,21824 89,57 1,#QNAN
    1 0
    0 3478762,36013 6755006,54907 54,8 1,#QNAN
    1 3478756,19538 6755078,16787 53,63 1,#QNAN
    2 0
    3 0
    N 0
    I want to read the line that before and after 1 0, 2 0, ...N 0 line to arraylist. I have programed the following code
    public ArrayList<String>save2;
    public BufferedWriter bufwriter;
    File writefile;
    String filepath, filecontent, read;
    String readStr = "" ;
    String[]temp = null;
    public String readfile(String path) {
    int i = 0;
    ArrayList<String> save = new ArrayList <String>();
    try {
    filepath = "D:\\thesis\\Material\\data\\CriticalNetwork\\test3.txt";
    File file = new File(filepath);
    FileReader fileread = new FileReader(file);
    BufferedReader bufread = new BufferedReader(fileread);
    this.read = null;
    // read text file and save each line content to arraylist
    while ((read = bufread.readLine()) != null ) {
    save.add(read);
    // split each arraylist[i] element by space and save it to String[]
    for(i=0; i< save.size();i++){
    this.temp = save.get(i).split(" ") ;
    // if String[] contain N 0 such as 0 0, 1 0, 2 0 then save its previous and next line from save arraylist to save2 arraylist
    if (temp.equals(i+"0")){
    this.save2.add(save.get(i));
    System.out.println(save2.get(i));
    } catch (Exception d) {
    System.out.println(d.getMessage());
    return readStr;
    My code has something wrong. It always printout null. Can anyone help me?
    Best Regards,
    Zhang

  • Urgent Help:read from text file and write to table

    Hi,
    I'm a super beginner looking for a vi to read this data from a text file and insert it into a table:
       #19
    Date: 05-01-2015
    ID= 12345678
    Sample_Rate= 01:00:00
    Total_Records= 2
    Unit: F
       1 03-23-2015 10:45:46   70.1   3.6
       2 03-23-2015 11:45:46   67.7   2.7
    Output table
    #     date                 time                 x          y        Sample rate    Total Records
    1          03-23-2015     10:45:46        76.8     2.8      01:00:00           2
    2          03-23-2015     10:45:46        48.7     2.1      01:00:00           2
    Thanks for your help in advance.
    Attachments:
    sample.txt ‏1 KB

    jcarmody wrote:
    Will there always be the same number of rows of noise header information?
    Show us how you've read the data and what you've tried to do to parse it.  Once you've got the last rows, you can loop over them using Spreadsheet String to Array (after cleaning up a few messy spaces).
    Jim,
    I didn't know you're that active on here.
    Yes, There will always be the same number of noise header information.
    I'll show you in person
    Regards,

  • Read from text file and seperate column

    hello,
    I have a problem reading my text file. This text file is downloaded from weather link. All data will be changed upon the selection of user. my problem is I can read the data column by column but i cannot retrive the right column header for each data. I also attached the test file. Can somebody help me? Thanks in advance..
    Attachments:
    download.txt ‏8 KB
    read text file.JPG ‏11 KB
    read data.JPG ‏43 KB

    Hi
    Sorry, I missed that one. The file formatting is strange though. It uses spaces to separate columns but also within columns. I attached a modified VI that tries to take care of that, but it fails at the columns "Solar Energy" and "Hi Solar Rad.". This is very difficult to read programmatically as there's one space each between "Solar", "Hi", and "Solar" again. So how do we distinguish between column separator and space within column?
    Is download.txt the original file? Or was it probably modified by an editor that would replace tabs by space characters?
    Attachments:
    test-mod-2.vi ‏11 KB

  • Powershell script - how to read a registry hive and store the value in text file and then again read the text file to write the values back in registry

    Hi All,
    powershell script Method required to read a value from registry and then taking the backup of that values in some text file.
    For example the hive is
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\Path
    and under path i need to take back up  of values in some text file and then put some value in the registry after back is taken in text file.
    Also how to read the text file values so that we can again write to registry hive  back from the back up text file.
    Your help is much appreciated.
    Umeed4u

    I think you need to read this first:
    http://social.technet.microsoft.com/Forums/scriptcenter/en-US/a0def745-4831-4de0-a040-63b63e7be7ae/posting-guidelines?forum=ITCG
    Don't retire TechNet! -
    (Don't give up yet - 12,830+ strong and growing)

  • How to read the contents of a text file and populate the data in a table ?

    Hello All,
      Can anyone advise on how to acheieve the above ? I am trying to read in a text file (CSV) and have the contents populated to the respective UI elements in a table. Any help is greatly appreciated.
    from
    Kwok Wei

    Hi,
    Let us consider you have list of names(Seperated by delimeter) in a text file and you want to display in  a table.
    1. Create Context Node "Names" and context attribute "Name"
    2. Create Table and bind to the above context.
    3.Write the following code in the "Init method.
    try{
    FileReader f =new FileReader("");
    BufferedReader r=new BufferedReader(f);
    String names=r.readLine();
    Vector Names=new Vector();
    // Use Tokenizer and store all the names i a vector//
    for(int i=0;i<Names.size();i++){
    IPrivate<<VieName>>.INameElement ele=wdContext.createNameElement();
    ele.set<<Name>>( Names.get(i).toString());
    wdContext.NodeName().addElement(ele);
    Regards, Anilkumar
    Message was edited by: Anilkumar Vippagunta

  • I need to read data from a text file and display it in a datagrid.how can this be done..please help

    hey ppl
    i have a datagrid in my form.i need to read input(fields..sort of a database) from a text file and display its contents in the datagrid.
    how can this  be done.. and also after every few seconds reading event should be re executed.. and that the contents of the datagrid will keep changing as per the changes in the file...
    please help as this is urgent and important.. if possible please provide me with an example code as i am completely new to flex... 
    thanks.....  

    It's not possible to read from a file without using classes from the core API*. You'll have to get clarification from your instructor as to which classes are and are not allowed.
    [http://java.sun.com/docs/books/tutorial/essential/io/]
    *Unless you write a bunch of JNI code to replicate what the java.io classes are doing.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

  • How can i read the text files and buffer the data in Vector?

    hi. I have been running into this problem for days, but with no luck and losing right direction.
    The problem is : I am trying to read a text file and buffer the data into a
    Queue for each user.
    the sample text file is as below:( 1st column is timestamp, 2nd is user_id, 3rd is packet_id, 4th is packet_seqno, 5th is packet_size)
    0 1 1 1 512
    1 2 1 2 512
    2 3 1 3 512
    3 4 1 4 512
    4 5 1 5 512
    5 6 1 6 512
    6 7 1 7 512
    7 8 1 8 512
    8 9 1 9 512
    9 10 1 10 512
    10 1 2 11 512
    11 2 2 12 512
    12 3 2 13 512
    13 4 2 14 512
    14 5 2 15 512
    15 6 2 16 512
    16 7 2 17 512
    17 8 2 18 512
    18 9 2 19 512
    19 10 2 20 512
    20 1 3 21 512
    21 2 3 22 512
    22 3 3 23 512
    23 4 3 24 512
    24 5 3 25 512
    25 6 3 26 512
    26 7 3 27 512
    27 8 3 28 512
    28 9 3 29 512
    29 10 3 30 512
    30 1 4 31 512
    31 2 4 32 512
    32 3 4 33 512
    33 4 4 34 512
    34 5 4 35 512
    35 6 4 36 512
    36 7 4 37 512
    37 8 4 38 512
    38 9 4 39 512
    39 10 4 40 512
    40 1 5 41 512
    41 2 5 42 512
    42 3 5 43 512
    43 4 5 44 512
    44 5 5 45 512
    45 6 5 46 512
    46 7 5 47 512
    47 8 5 48 512
    48 9 5 49 512
    49 10 5 50 512
    50 1 6 51 512
    51 2 6 52 512
    52 3 6 53 512
    53 4 6 54 512
    54 5 6 55 512
    55 6 6 56 512
    56 7 6 57 512
    57 8 6 58 512
    58 9 6 59 512
    59 10 6 60 512
    60 1 7 61 512
    61 2 7 62 512
    62 3 7 63 512
    63 4 7 64 512
    64 5 7 65 512
    65 6 7 66 512
    66 7 7 67 512
    67 8 7 68 512
    68 9 7 69 512
    69 10 7 70 512
    70 1 8 71 512
    71 2 8 72 512
    What I wanna do is to read all the data above and buffer them in a queue for each user( there are only 10 users in total).
    I already created a class called Class packet:
    public class packet {
        private int timestamp;
        private int user_id;
        private int packet_id;
        private int packet_seqno;
        private int packet_size;
        /** Creates a new instance of packet */
        public packet(int timestamp,int user_id, int packet_id,int packet_seqno, int packet_size)
            this.timestamp = timestamp;
            this.user_id=user_id;
            this.packet_id=packet_id;
            this.packet_seqno=packet_seqno;
            this.packet_size=packet_size;
    }then I wanna to create another Class called Class user which I can create a queue for each user (10 users in total) to store type packet information. the queue for each user will be in the order by timestamp.
    any idea and sample code will be appreciated.

    Doesn't sound too hard to me. Your class User (the convention says to capitalize class names) will have an ArrayList or Vector in it to represent the queue, and a method to store a Packet object into the List. An array or ArrayList or Vector will hold the 10 user objects. You will find the right user object from packet.user_id and call the method.
    Please try to write some code yourself. You won't learn anything from having someone else write it for you. Look at sample code using ArrayList and Vector, there's plenty out there. Post in the forum again if your code turns out not to behave.

  • Having trouble reading specific lines from a text file and displaying them in a listbox

    I am trying to read specific lines from all of the text files in a folder that are reports. When I run the application I get the information from the first text file and then it returns this error: "A first chance exception of type 'System.ArgumentOutOfRangeException'
    occurred in mscorlib.dll"
    Below is the code from that form. 
    Option Strict On
    Option Infer Off
    Option Explicit On
    Public Class frmInventoryReport
    Public Function ReadLine(ByVal lineNumber As Integer, ByVal lines As List(Of String)) As String
    Dim intTemp As Integer
    intTemp = lineNumber
    Return lines(lineNumber - 1)
    lineNumber = intTemp
    End Function
    Public Function FileMatches(ByVal folderPath As String, ByVal filePattern As String, ByVal phrase As String) As Boolean
    For Each fileName As String In IO.Directory.GetFiles(folderPath, filePattern)
    If fileName.ToLower().Contains(phrase.ToLower()) Then
    Return True
    End If
    Next
    Return False
    End Function
    Private Sub frmInventoryReport_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Dim intcase As Integer = 1
    Dim strTemp, strlist, strFile As String
    Dim blnCheck As Boolean = True
    strFile = "Report Q" & intcase.ToString & ".txt"
    Do While blnCheck = True
    strFile = "Report Q" & intcase.ToString & ".txt"
    Dim objReader As New System.IO.StreamReader("E:\Furry Friends Animal Shelter Solution\Furry Friends Animal Shelter\" & strFile)
    Dim allLines As List(Of String) = New List(Of String)
    Do While objReader.Peek <> -1
    allLines.Add(objReader.ReadLine())
    Loop
    objReader.Close()
    strlist = ReadLine(1, allLines) & "" & ReadLine(23, allLines)
    lstInventory.Items.Add(strlist)
    intcase += 1
    strTemp = intcase.ToString
    strFile = "Report Q" & intcase.ToString & ".txt"
    blnCheck = FileMatches("E:\Furry Friends Animal Shelter Solution\Furry Friends Animal Shelter\", "*.txt", intcase.ToString)
    Loop
    End Sub
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim intcase As Integer = 1
    Dim strTemp, strlist, strFile As String
    Dim blnCheck As Boolean = True
    strFile = "Report Q" & intcase.ToString & ".txt"
    Do While blnCheck = True
    strFile = "Report Q" & intcase.ToString & ".txt"
    Dim objReader As New System.IO.StreamReader("E:\Furry Friends Animal Shelter Solution\Furry Friends Animal Shelter\" & strFile)
    Dim allLines As List(Of String) = New List(Of String)
    Do While objReader.Peek <> -1
    allLines.Add(objReader.ReadLine())
    Loop
    objReader.Close()
    strlist = ReadLine(1, allLines) & "" & ReadLine(23, allLines)
    lstInventory.Items.Add(strlist)
    intcase += 1
    strTemp = intcase.ToString
    strFile = "Report Q" & intcase.ToString & ".txt"
    blnCheck = FileMatches("E:\Furry Friends Animal Shelter Solution\Furry Friends Animal Shelter\", "*.txt", intcase.ToString)
    Loop
    End Sub
    End Class
    Sorry I'm just beginning coding and I'm still a noob. Any help is appreciated. Thank you!

    Ok, so if I'm following this correctly you should be able to just loop through all of the files in that folder whose file name matches the pattern and then read the first 22 lines, recording only the first and the last.
    Exactly how you store the animal data probably depends on how you are going to display it and what else you are going to do with it.  Is there anything other than name and cage number that should be associated with each animal?
    You might want to make a dataset with a datatable to describe the animal, or you might write a class, or you might just use something generic like a Tuple.  Here's a simple class example:
    Public Class Animal
    Public Property Name As String
    Public Property Cage As String
    Public Overrides Function ToString() As String
    Return String.Format("{0} - {1}", Name, Cage)
    End Function
    End Class
    With that you can use a routine like the following to loop through all of the files and read each one:
    Dim animals As New List(Of Animal)
    Dim folderPath As String = "E:\Furry Friends Animal Shelter Solution\Furry Friends Animal Shelter\"
    For Each filePath As String In System.IO.Directory.GetFiles(folderPath, "Report Q?.txt")
    Using reader As New System.IO.StreamReader(filePath)
    Dim lineIndex As Integer = 0
    Dim currentAnimal As New Animal
    While Not reader.EndOfStream
    Dim line As String = reader.ReadLine
    If lineIndex = 0 Then
    currentAnimal.Name = line
    ElseIf lineIndex = 22 Then
    currentAnimal.Cage = line
    Exit While
    End If
    lineIndex += 1
    End While
    animals.Add(currentAnimal)
    End Using
    Next
    'do something to display the animals list
    Then you might bind the animals list to a ListBox, or loop through the list and populate a ListView.  If you decided to fill a datatable instead of making Animal instances, then you might bind the resulting table to a DataGridView.
    There are lots of options depending on what you want and what all you need to do.
    Reed Kimble - "When you do things right, people won't be sure you've done anything at all"

Maybe you are looking for

  • Music not playing smoothly in iTunes

    I recently updated my iTunes to the latest version and ever since then my music has been jerking and not playing smoothly. I've checked my computer's performance while iTunes and other applications have been open and all seems normal. I've run the se

  • Logout   with frank nimpus custom login provider

    i am using container managed security described in http://www.oracle.com/technology/products/jdev/howtos/1013/oc4jjaas/oc4j_jaas_login_module.htm i got no clue on how to handle logout ? any help greatly appriciated

  • Report Layout split over several pages

    Hi, I am trying to design a report which will print a three page application form. But I am unable to design the format of second and third page as in layout model we can design the format of single page. So, Plz advice me how can switch to second an

  • Regarding subtotal text in Alv

    Hi,      Can you please let me know how to achieve subtotal text for classical ALV reports. Regards, MNR.

  • Weird problem with Oracle thin driver

    I wrote a little app that uses the (Classes12.zip) thin driver to connect to an instance of Oracle 8.1. I wanted to test the app�s ability to deal with the database going offline and thought the easiest way to do this would be to yank the network cab