1. What is the best way to read a text file two lines at a time in Java? stackoverflow.com |
2. Java: Reading the Trailing New Line from a Text File stackoverflow.comHow can you get the contents of a text file while preserving whether or not it has a newline at the end of the file? Using this technique, it is ... |
3. Java: Quickly read the last line of a text file? stackoverflow.comWhat's the quickest and most efficient way of reading the last line of text from a [very, very large] file in Java? |
4. Read a specific line from a text file stackoverflow.comIs there any method to read a specific line from a text file ? In the API or Apache Commons. Something like : |
5. How to read a block of n lines of a very big text file in both directions, using Java stackoverflow.comI need to read a very big log file (about 400MB) and display its content in a textarea. Obviously I can't read the whole file first, because of its dimension, so I ... |
6. Reading certain lines from text files stackoverflow.comI want to read in the 1st, 4th, 7th, etc. (every 3 lines) from a text file but am not sure how to go about doing so as nextLine() reads everything ... |
7. How can I diff two different text files without considering line order? stackoverflow.comI have two properties files that contain information. I would like to diff them to see if they are the same. However, in properties files, unless you specify an order to ... |
8. read lines in txt file [java] stackoverflow.comI'll try to be as clear as possible but pardon me if my question is not perfect. I have a txt file with several lines of data. example: 123 ralph bose 20000 200 ... |
9. Start reading a text file from a particular line stackoverflow.comIs a way to pen a text file, read a few lines, close it, re-open it and start reading from the line where you left off before? Or do you always ... |
10. Is there any method to locate a line with line num in a text file with java api? stackoverflow.comI hope there do have an operation for this topic,'cause I don't want to loop the file once again,and hope to read the file from the specific location say a line ... |
11. Read special line from txt file in j2me stackoverflow.comHi i have a text file for example : file.txt, i want read a line, for example line 7, have any way to read direct line 7 without read other line ? ... |
12. Reading lines from text files in Java stackoverflow.comI am trying to read product information from some text files. In my text file I have products and their information. This is my file: Product1: ID: 1232 Name: ABC35 InStock: YesAs you see, some products ... |
13. Reading group of lines in HUGE files stackoverflow.comI have no idea how to do the following: I want to process a really huge textfile (almost 5 gigabytes). Since I cannot copy the file into temporarily memory, I thought ... |
14. Which is the best way to read the last line of a text file in Java? stackoverflow.comI was confused when I want to get the last line of a plain text file in Java. How can I do this? and which is the best way without using ... |
15. Detect last line of a simple text file stackoverflow.comHello i wanna make an app that able to detect last line of a simple text file , is anyboady know that way? |
16. How do we determine the number of lines in a text file? stackoverflow.comHi all I have a local file which looks like this: |
17. How do a get to read the next line in a text file? bytes.comcan't say ? what do you mean by executing the line after reading from the text file. by the way |
18. skip blank lines in reading from text file coderanch.comok, I did some research on the topic not beleaving I couldn't find anything, but maybe it's just an unlucky day. What I'm trying to do is simply to get my program to skip blank lines when reading from a text file. For now I'm using something like: BufferedReader in = new BufferedReader(new FileReader(filename)); String line; while ((line = in.readLine()) != ... |
19. Reference Specific Line in Text File coderanch.comI don't think this is an I/O problem You're just re-setting the same fields over-and-over in your loop. I infer that you files follows a structure where each line corresponds to a field on your form/applet/whatever. There are many ways to crack this, I think that an array of JTextField and do something like this. int index, expectedLines = 9; for ... |
20. Read lines from a text file coderanch.comDo whatever analyzing you need to do before or after your line with System.out.println(str) (or instead of, depending on whether you really want to print it to the screen). If your analysis is complicated, I would suggest putting it into a different method and then calling that method from within your while loop. Angel [ February 10, 2004: Message edited by: ... |
21. How to read lines from a text file coderanch.com |
22. How to get the total no. of Lines of a text file coderanch.com |
23. Reading the last (or last but 1) line in a text file coderanch.comIs there an easy way to skip lines in a text file? I have a text file which reads a bit like this, where %n means newline, and most Britons will recognise AB123456C as a National Insurance number:- 0 1 2 3 4 Campbell Ritchie AB123456C%n 0 12 23 34 45 Campbell Ritchie AB123456C%n 0 123 234 345 456 Campbell Ritchie ... |
24. CR[carrige return] in text file for new line coderanch.comOn Windows systems, Java will use CR-LF (\r\n) at the end of a line by default. On Unix-like systems (including the iSeries) it will just use LF, and I believe that on Mac systems it will use CR. Pretty much every text editor in the world understands that a line can be ended by any of those three combinations of characters. ... |
25. to read different lines in text files coderanch.comhi....... suppose i have a text file Note that using agent groups is probably not what you want. Strategies do ; not propagate down to the Agent system so if you want round robin, least ; recent, etc, you should list all the agents in this file individually and not ; use agent groups. ; available, but consider with penalty member ... |
26. Number of lines in the text file coderanch.com |
27. read specific line from text file coderanch.comhey all, look at my code hear; import java.io.*; import java.util.*; public class Main { public static void main(String[] args) throws Exception { BufferedReader br = new BufferedReader(new FileReader("users.txt")); String str; int start = 0; int end = 0; int count = 0; while((str = br.readLine())!= null) { StringTokenizer st = new StringTokenizer(str," "); count++; System.out.println(st.nextToken()); } end = count; int ... |
28. How to write to specific line number in a Text file? coderanch.comHello Ranchers! is there a way to write to a text file but writing only to a specific line number only? For example: I have a 10-line text file, I only want to change line number 4 and the rest will not change. Now how, can I accomplish this without using loop? (reason for optimization - if possible) thanks! Ryan Webb ... |
29. Change a line in text file coderanch.comHi all. I have tried a lot before to change a particular line in a text file. I have also posted here some of the code also long back. I got suggestions to write the contents to temp file and rename it and all that. Now have observed that, there is an option in notepad itself to replace the text. How ... |
30. Reading a line from text file coderanch.com |
31. how to read specific lines from a text file coderanch.comhi every body...thanks for the support i got from u.my code can now write to text-file without overwriting. please i will need your assistance once again.i dont need to read all the lines in my text file,i just need some specific lines which are not in order.i tried to use readLine() method but,it reads lines by line and i dont need ... |
32. duplicate lines in a text file coderanch.com |
33. Java Newbie in need of assistance, reading lines from text file and calculating averages. coderanch.comHello, JavaRanch. My name's Aaron, and as this thread's title states, a newbie to the Java world. I understand a little about Java after 9 weeks of classes/labs, even more since I have a few friends who can help. I'm here today to ask for assistance regarding a code I'm working on now. The situation is, I need to read data ... |
34. Skipping to a particular line while reading Text File coderanch.comit depends. Do you want to skip a certain number of lines? do you want to skip lines until you get to one with a certain value in it? do you want to skip 9 lines, do something on the 10th, then skip 9 more? You can do whatever you want, you just need to define what that is. |
35. Im writing to a file and i want to skip lines while writing to a text file. java-forums.orgIm writing to a file and i want to skip lines while writing to a text file. heres my class code: import java.util.Scanner; import java.io.*; public class PlayerStats { public static void FileCreation(String name) { try { File create = new File(name); create.createNewFile(); } catch(Exception error) { System.out.print("Error the file couldn't be found or made."); } } public static void Filewriting ... |
36. Writing multiple lines to text file at once java-forums.orgHey Java experts, I'm having a little bit of trouble implementing JDBC into this Java solution. The bit of code that I think matters is as follows: Java Code: while (rs.next()) { String x = rs.getString ("COLUMN1"); String s = rs.getString("COLUMN2"); String result = (x + "; " + s + "; "); System.out.println(result); FileWriter out = new FileWriter("out.txt"); BufferedWriter writer ... |
37. Stepping through a text file line by line java-forums.orgI'm attempting to write a program that steps through lines from a text file (to be used in conjunction with MaxMsp. I'd like to read a whole text file and output a single line, then trigger the output of the next line. I'm not sure if there is a way to tokenize the lines, and recall them later. Or perhaps I ... |
38. Taking a line from a text file if it contains the specified text java-forums.org |
39. Is there a way to read a specific line in a txt file (without iterating through)? java-forums.orgObviously I could just iterate through lines until I get to the line I need but that seems very inefficient, especially since I'm working with ~58,000 lines. Is there a way in the Java API to go directly to a set line? EDIT: For now I've just read all values into an ArrayList and then pulled values from there but if ... |
40. Analyzing a line of a text file java-forums.orgHi, I'm quite new to Java, but I've already completed an Android project. I now started on a Java project, but an error has been occuring for a long time. I have tried to find the reason, but couldn't succeed. As my last resource I would like to ask you if you know what might go wrong. I basically have a ... |
41. How to skip null line betwwen the text in a file forums.oracle.comSo I've been trying to troubleshoot this for a while now. My problem is that - A file containg text may also have null line and again some text line.I want to take only those line not containg null.. My code is - String line; while (true){ int data = br.read(); if(data<0){ break; } line = br.readLine(); if(line != null) { ... |
42. Want to know how to check for new line character in text file forums.oracle.com |
43. Record the last line of a text file forums.oracle.com |
44. I have 100000 lines of text file, divide that text into smaller pieces forums.oracle.com |
45. Java write/append to each line of a text file forums.oracle.comThanks for the additional help. I got it to work and I spent some time trying to make it so that instead of appending to the end of the file, each line is appended the desired string. For example, a file with lines: line1 line2 line3 would then become: line1, appended string line2, appended string line3, appended string Thanks again for ... |
46. how can i change line when i try to write something to a text file forums.oracle.comthe error is ============ D:\JCreatorV3 LE\MyProjects\AWD.java:14: cannot find symbol symbol : method writeLine(java.lang.String) =========== maybe the method is not in java.io package maybe cannot apply in this way Always read the API docs first. If you had read them you'd have found out that a FileWriter doesn't have a writeLine() method. There is no use in guessing whether or not a ... |
47. writing to new line in a txt file forums.oracle.com |
48. Skipping Blank Lines in text File forums.oracle.comI'm going to hazard a guess here and say it's failing on the last line of the file. That is, it's read in everything and got the last set of details and then calls nextLine() to skip the blank line, only there isn't a blank line at the end of the file...so you get your error. Does that help in pointing ... |
49. Read Last Line from a text file forums.oracle.com |
50. How to edit/modify a line of a text file using java io forums.oracle.comI want to randomly access the file But i cannt access it Actually i am writing the backend code initially. Actually i need to add trainee id,name,department,date of joining,address into the file. using id i have to edit/delete it based on the trainee id. i had some code for it but it was for entering book numbers,names...... I edited it but ... |
51. While loop to read lines in text file, reads one, skips one forums.oracle.com |
52. How to read a specific line from a text file. forums.oracle.comThe only way you can know where a given line number is in the file is by: 1) counting newlines 2) if all lines are the same length, going to a calculated byte value (bytes per line * line number) (note this may work differently based on file character encoding) 3) if you have built some external data structure that expresses ... |
53. How do I read specified lines in a text file? forums.oracle.com |
54. how to read text file line by line...? forums.oracle.com |
55. Writing To A Specific Text File Line forums.oracle.comIn a program I am writing I need to be able to write to the end of a specific line in a textfile. I'm not sure of any particular way to do this apart from perhaps rewriting the whole textfile which would be a pain to do. Does anyone know of a simpler way of how to do this? |
56. how to know a line of text file is ending with line feed or return? forums.oracle.comthanks for reply heri2000 yes, i'm trying to read the log file from previous position until the end of stream, line by line, i can jump to previous position by using method skip of BufferReader, but this method take number of char to skip as parameter, but file size some times is not equal to number of characters (UTF-8 encode for ... |
57. Read specified line from a text file forums.oracle.com |
58. how to read last line from a .txt file? forums.oracle.comHello I have a string: e.g. "my name is John" and i wanna verify if this string is equal with the last line from a text file for example, if in the txt file i have: asdasd sdgsdfgasd asdfgadfgadf sdgasdgsdf my name is john then it's OK. but if i have asdgsdfg dsfhsdfhsd sdgasdfg sdgsdg my name is Jdfgsdg this is ... |
59. Fastest way to read a 5MB textfile (200,000 lines)? forums.oracle.com.concat() creates a new String every time. So each time you read a line you create a completely new String containing a copy of the previous one plus the newly read line. Of course this will slow down quite a bit ... A Better solution would be to create a StringBuilder (StringBuffer, if you use anything from before Java 5) and ... |
60. reading a new line feed from .txt file forums.oracle.com |
61. read lines of a text file, From bottom to top forums.oracle.com |
62. Reading a specific line in a .txt file forums.oracle.comHi I want to make a program that reads a specific line in a .txt file, and writes to a specific line in the .txt file. I have made a program wich you can log in to. When you have typed your username and a password it looks for a file: "yourusername".txt and checks if the password is correct. The password ... |
63. Read text file two lines by two lines. forums.oracle.comAnother option (I'm not saying its the best option, but it is an option) is to use NIO, which means you get direct control over your channel buffer, and you can read the data from the channel without removing that data, so you could re-read it again if you want. - Adam |
64. Reading a specified line from a .txt file forums.oracle.com |
65. Read file txt line the line forums.oracle.com |
66. How to read the line N of a textFile forums.oracle.com |
67. how to read partcicular line from a txt file forums.oracle.com |
68. How to read long line from text file forums.oracle.comAs per my knowledge reading line not aproblem u can use this codewhile ((line = br.readLine()) != null) where br-buffered reader.....The out of memory error comes two reasons... 1.u use any IDE then increase heap size....if u mention which IDE u use iwill help u... 2.I think any complex operation u done after reading file u please mention that.....therfore i can ... |
69. unable to read thousands of lines in a text file forums.oracle.com |