1. Local variable files is never read forums.oracle.com |
2. How to read a .gz file. forums.oracle.com |
3. program not reading file forums.oracle.com |
4. Reading in a certain number of characters from a file. forums.oracle.comHi guys, I need some pointers on how to read in a specified number of characters from a text file.For example,how would I read in the first 100 characters to an array from a text file with an unspecfied number of characters (more than 100 rather than less!). At present I am getting code errors being thrown due to reading in ... |
5. Reading from a file forums.oracle.comI am trying to read from a text file. It has two lines, one word on each line. I want to read the first word character by character in one array and second word in a second array. I am trying this by using bufferedReader but have not yet succeeded. Kindly help |
6. File Reading forums.oracle.comIn the write case, you are probably blocking in the final keyboard.nextLine(), waiting for another ENTER. This readLine should happen straight after you read the selection number at the top and before you do anything based on the selection number. In the read case, you are reading the newline after the selection number into 'filename', which is therefore empty. The fix ... |
7. having alot of trouble in file reading in java forums.oracle.comi dont know. but i feel really bad that Java is a very good OOP language and i suck big time (not very bad but got frustrated) in reading and writing files. some of the time i have accomplish my task with the help of forums. anyways first i would like to ask 2 questions and then i will state my ... |
8. reading files using 'io' java library forums.oracle.comand put dis in any variables ... but if you want to read multi type of parameter you must use the write command... you tell you want to read String and double, and you use only "readDouble".. you can write: for(int r = 2; r < 14; r++) for(int c = 0; c < numberOfCities; c++){ rainfallTable[r][numberOfCities] = inDataStream.readDouble(); inDataStream.read();} this ... |
9. Reading integers in from a file forums.oracle.comHi, I think I posted this in the wrong forum before... anyway, my question was: Hi, I am going to go for the 'reading in from a text file' action as I haven't done this before. So I have been looking at all the examples and am trying the one out below My question is that though the structure seems pretty ... |
10. Reading from a file... forums.oracle.com |
11. Reading a File !!! forums.oracle.comYou are going to have to parse the information and create an HTML table out of it, obviously, if you wish to display a table on HTML. As you read each line split it up using either the split method from String, or a regeular expression, as befits the data structure, then assign each of these as a TD and make ... |
12. Reading a File !!! forums.oracle.com |
13. Reading a File !!! forums.oracle.com |
14. Reading a File !!! forums.oracle.com |
15. How to read a file forums.oracle.comThat doesn't make any sense. If you want to read a file as a series of bytes, then use FileInputStream. A ByteArrayInputStream is used when you already have the bytes and want to access them as a stream. If you want an InputStream, and there's a file to take the bytes from, use the FileInputStream; there's no need to involve ByteArrayInputStream. ... |
16. FILE_READING forums.oracle.comFileReader is used when u just want to read from the file, u can read character wise or string its upto u. Contrarry FileInputStream is used when u have implemented serilization i.e. if u have saved state of an object in a file through serialization and u want to read back by deserilizing the object then u create an object of ... |
17. Reading a Notepad file? forums.oracle.comHi Everbody, I am trying to read a notepad file and display it on console. Here is my code, it was compiled without any errors , but when trying to run it "NoClassDefFoundError" Exception is coming. Please help me out. CODE:- import java.io.*; import java.util.*; class IOTest { public static void main(String ar[]) { try { File f = new File( ... |
18. Read from a file(integers) forums.oracle.com2) Don't just say "cannot find symbol." There was a lot more detail in the error message--it tells you which symbol and which line. Provide that information here (and tell us which line corresponds to the line number in the message--we're not going to count your line numbers) so that people can help you more easily. |
19. reading numbers from file.... forums.oracle.com |
20. Reading a data file forums.oracle.comHi I am new to java and I need to know how to write a Java application (i.e. not an applet) that reads a data file containing an arbitrary number (x,y) pairs, one per line. I a, not sure how to do this if you could help I would be very grateful. Thanks Rob |
21. reading SINGLE characters from a file forums.oracle.comhi i am new to java and i am having problems reading a single character from a file. I know how to read whole lines using the readline function or reading single characters as bytes of integers ie. (while ((c = inputStream.read()) != -1) but i dont know how to convert them to thier equivalent characters and can only leave them ... |
22. How to Read Each String From a File forums.oracle.com |
23. cannot read JAVA file forums.oracle.comooo...ok. now i've already got the java class. the java file should be in the c drive then i can run the command so that the java file will be created in the C:\myclasses directory. but i still got an error saying that "The value for the useBean class attribute UserData is invalid." Message was edited by: likeJAVA |
24. reading info from file forums.oracle.com |
25. Read data from a sequential file to fill an arrray forums.oracle.comTry printing out the results into the console before you put them to the textarea to make sure that the results are calculated properly. Then you can concentrate on debugging the box-problem (I'd recommend that you put different things in the text area and check which of your values are displaying as boxes). Also, are you using AWT (instead of Swing) ... |
26. Help for reading a numeric file forums.oracle.com... As you can notice I'm using this TextIO.class I've read in the book Introduction to Programming Using Java, Fifth Edition that is free on the internet, but I'm not able to let Eclipse understand to read the TextIO.class I've stored in the project directory. The matrix I have to read is very big and the format of the integer number ... |
27. read file forums.oracle.com |
28. Reading in from file with jFile chooser forums.oracle.comWhat i believe i need to do is, firstly: 1. Create a method which reads in the file and creates objects with the data from the file 2. Create a jFileChooser within my GUI 3. Create an event handler for the button which uses the jfileChooser 4. call the method which reads in and create objects from within the event handler ... |
29. Reading in from file forums.oracle.comDo you know what the program should do? Sorry do you mean the application as a whole or specifically the read in data part? Do you understand what the given code already does? As far as i can make out... the code given only reads in the school name & Head of school details. Am i correct in thinking that the ... |
30. Reading in from file forums.oracle.comThe code given to you as an example demonstrates how to open the file, read a line of data from it, and split that line into parts. You are given the format of the file, and example data. So - given that you know how to read a line of data from the file and split it into parts, and given ... |
31. reading a file from web-inf forums.oracle.comI think what sabre is saying, and correct me if I am wrong, is that the OP is being silly/sloppy/stoopid. The WEB-INF directory contains information that is used by the container to start the application. Publicly accessible files should be kept in a folder higher in the directory structure. As to what the OP wants vs. what (s)he needs to do? ... |
32. Reading from a file forums.oracle.com |
33. quick quest on reading from a File forums.oracle.com |
34. reading a file of numbers? forums.oracle.comReadLine does exactly what it says (an example of a meaningful method name) - it reads in an entire line from a file (excluding the new line character), so yes it returns a string. Is there just a single number on each line, or are the numbers separated by some delimiter, like commas, spaces, etc? If you have multiple numbers on ... |
35. How to read DBF file in java forums.oracle.com |
36. Prompt java to read in a file forums.oracle.comHi I am trying to finish a program that analyzes data and in the main method of my program I need a command that allows me to prompt the user of the program for a file to read into the program so that the program can run its analysis. What would such a command be and please give me some example ... |
37. reading from a file problem forums.oracle.comgranum wrote: Is there any better way to do this. I am sure there is... Hmm... Yep, I'm pretty sure there's a better way of doing it. What you're looking for is fast access to an object (in this case a User record) based on it's identifier, right? This a very common programming problem. Common problems often have good existing solutions, ... |
38. Read from file forums.oracle.com |
39. read from file to string forums.oracle.com |
40. Reading file and parseInt - PROBLEM forums.oracle.composition++; result = "succesful"; } in.close(); } catch (Exception e){//Catch exception if any System.err.println("Error: " + e.getMessage()); e.printStackTrace(); e.getLocalizedMessage(); } return result; } Error message is: Error: For input string: "12, 15, 19, 9, 14, 7" java.lang.NumberFormatException: For input string: "12, 15, 19, 9, 14, 7" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) at java.lang.Integer.parseInt(Integer.java:456) at java.lang.Integer.parseInt(Integer.java:497) at ca5.GameControle.loadPlayerFromTxt(GameControle.java:56) at ca5.GameControle.main(GameControle.java:112) |
41. File Reading forums.oracle.comGenerally you'd use a java.util.Scanner or a java.io.BufferedReader wrapped around a java.io.FileReader, to read the file line-by-line. Each line would go in a String variable. If the .length() of the string is zero (or, if you want to ignore whitespace) if the .trim().length() of the string is null, that would count as an empty line. |
42. Read the file and display it to an information-type message box. forums.oracle.comRead in each line of data from the file, and display it to the user using an information-type message box, indicating the manufacture name, the number, the category (spelled out as a word), the amount of glass in pounds (in case you have forgotten, there are 16 ounces in a pound), and the cost of the glass. |
43. Read file one more time. forums.oracle.comIn your first loop you read until you reach the end of the file. In the second loop you read until you reach the end of file. You don't re-open the file or otherwise re-set the position in the file. Therefore the very first read in the second loop will already return -1 (indicating the end of the input). |
44. read file and count rows and columns forums.oracle.comCan someone guide me on how can I accomplish the following a) read what supposedly is a matrix from text file b) make sure all the entries in input are integers c) if not raise error, else c) is the matrix a square matrix? d) if not raise error if its not square matrix else e) if it's a square matrix, ... |
45. Reading data from a file... getting InputMismatchException? forums.oracle.comThis is the [Pattern|http://java.sun.com/javase/6/docs/api/java/util/regex/Pattern.html] I'm talking about. It treats "|" as an OR operation when searching for a match. The escape character in regular expression is "\" and if you want to use it in Java, it must be " ". Anyway, I just download yout text file and it works for me. |
46. reading files at random forums.oracle.com |
47. Inheritance+reading external file forums.oracle.comI am new to java and I have questions regarding Inheritance . I will explain my enquiry with this example I have a class Student(String name,String Id, String courseName) I am suppose to read a file called a.txt that contains a list of student names, Ids, and course names and put them in an array(AllStudents) of type Student I am also ... |
48. Reading file and get the reading position forums.oracle.com |
49. Reading files in system root forums.oracle.comIs there any method in java with which i can refer to my systemroot (windows folder) when reading a file from it, without specifying where it actually lies? That is, if i'm writing like this new FileReader ("D:\\windows\\system32 perfci") this program cannot run in a system where windows 2000 is installed in C drive. I've tried to replace D: windows by ... |
50. Reading sequential file forums.oracle.comI do have full control over the layout of the file, they are just supposed to be read in sequential order. @jverd I figured the way I have it is very fragile and would break of the variables ever had to be changed. The assignment is for a made up company so really there wouldnt be any changes made, but I ... |
51. Unable to read a file forums.oracle.comThe basic structure of my code is like this:- The basic structure doesn't help us. We don't know which line is causing the problem or which variable is null. Learn to read the stack trace to solve your NullPointerException. Why are you extending a JPanel to read a file? A Panel has nothing to do with reading a file. Just write ... |
52. Is This possible? Read HKLM & File Date Mod forums.oracle.comI'm totally new to Java and before I dive in and learn it I'm wondering if someone could tell me if it's possible to do this with Java. My goal is to create a little online system check that users can click on to check for applications and settings without forcing them to click on more than 1 security prompt. The ... |
53. Read a file from online domain space? forums.oracle.com |
54. Help with reading file pls :) forums.oracle.comretrieveFoodDetails(args[0]); retrievePeopleDetails(args[1]); } public static String retrieveFoodDetails(String detailsFileName) { String scan; File file = new File(detailsFileName); Scanner reader = new Scanner(file); Fridge foods = new Fridge(""); // will this part store the strings foods in foods.txt in the array list fridge? or have i done it completely wrong while(reader.hasNext()) { scan = reader.nextLine(); //etc } |
55. Simple Problem, File Read forums.oracle.comI have a file that is as follows tour: North Norfolk description: A nice ride to the Cromer coast and back to Norwich waypoints: Norwich, Taverham, Sustead, Cromer, Buxton, Spixworth, Norwich what would be the best way to split up this file. I want to put tour, description, waypoints into one array String[] tourInfo but then split the waypoints into another ... |
56. Reading From File And Sum of Last 2 Integers forums.oracle.comLets say i have a text and it has 1,3,4,5,6,7,3 in it. i want the output to be 10 (which is the sum of the last two integers.) Any idea how can i do that? I know how to add all numbers by using hasNextInt() method but how can i read the last two of them? and calculate the sum.. |
57. problem reading file forums.oracle.com |
58. Problems with reading from file & objects.... forums.oracle.com |
59. Read From File forums.oracle.com |
60. program is not reading all records in the file. forums.oracle.comRTuttle778 wrote: I'm fairly new to Java and having problems. My program keeps reading the first record in my GradData.dat file. I won't move on to the other records in that file when the view records button is pushed. I am thinking I need a while loop but not sure where it needs to be put. Can anyone give me some ... |
61. how to read openproj(Projity) file i.e. ,POD file(Project Management file) forums.oracle.com |
62. File wont read, and I'm ready to tear my hair out!!! forums.oracle.com/** * Converts a List |
63. [JAVA] Reading from one file and writitng to another forums.oracle.com |
64. Read file from a remote place forums.oracle.comHow clever you are to work these ingenious errors into your code and then modestly admit, with a flourish of hand-waving, that you meant to do this all along. I hope that in the future we will have more of these programming pearls cast before us swine, so that we can squeal with delight. |
65. How do I create a file that I can't read? forums.oracle.com |
66. Reading file issues - unknown character gets inserted forums.oracle.comWhat encoding does the source file use? Probably an encoding different from whatever the default is on your platform (UTF-8 is a likely candidate). When you create a String from a byte[], it uses the default encoding for your platform, unless you specify a specific encoding. When you write the contents of the String using a Writer, it again uses the ... |
67. Read dates from a file forums.oracle.comI have the following requirement. Each country has its own holidays. I want to store it in a file and read all the dates in for a country. I have the following idea of what the format of the file looks like for US (new year, memorial day and labor day) and Switzerland (new year, swiss national day, Swiss federal fast) ... |
68. Problem Reading Newly Created Files forums.oracle.com |
69. How do I read a file header? forums.oracle.comI want to validate that a given file actually is of a specific type. For instance that a .pdf file actually is a pdf file. To achive this I want to read the header of the file and validate the header information. Exactly how do I read header info from a file?? Links to examples or tutorials would be very welcome. ... |
70. Reading HTML files in a java forums.oracle.comHi guys, In a project that I have to submit, I have to read a HTML file's text and then have to check if it contains any word or words, that are present in a List. I already have the list, But how can I read the HTML file and then how can I compare it's text... any idea please...any kind ... |
71. File Reading forums.oracle.com |
72. Pick a random string from a file that is read forums.oracle.comHow can you be confused by my little bit of pseudocode above? First thing GET RID of the Iterator, you do not need it. Then simply follow the pseudocode. I assume you have the loop working so all you need to do is add 2 lines of code after the loop. I hate to be blunt here but if you cannot ... |
73. Problem in reading from the File forums.oracle.com |
74. Problem in reading from the File forums.oracle.com |
75. read from file and compute forums.oracle.comjust a few suggestions about the code you posted too 1. instead of pasing the input strings to ints and Doubles and then writing them, just write them to the file as strings 2. If you do this instead of repeating your write to file line eachtime, you can make a writeToFile method. 3. I would probably make a Product object ... |
76. Read a file's certain part forums.oracle.com |
77. Java I/O -file read problem (3.38MB) forums.oracle.comwhile ((strLine = br.readLine()) != null) targetString=strLine; //Close the input stream in.close(); }catch (Exception e){//Catch exception if any System.err.println("Error: " + e.getMessage()); } System.out.println(targetString); " The output of this program is the last part of the file, and a warning: "....line is too long, please switch to wrapped mode to see whole line...." |
78. Read content of file which is ZIPed forums.oracle.comReading an input stream into an array of bytes and then calling toString() on that byte array isn't going to give you the contents of the input stream meaningfully. For one thing it might not even be textual data. And secondly that's not how you get textual data. A better approach would probably be to get the number of bytes of ... |
79. I can't read back what I wrote (to a file) forums.oracle.comThis is what I suspected. Thanks for the reply, but there is NO WAY I am I putting that into my program. I'd rather just rewrite everything in C (where I'm pretty sure the language can read back in whatever it writes out). Feel free to disagree, but I feel this is a fairly serious design flaw: Java cannot parse a ... |
80. Read last kilobyte from file? forums.oracle.comIs there a way to read the last few bytes of a file without reading the entire file? The files are audio files, so they will be several MB's in size. If I read the entire file it takes a few seconds, where if I only have to read the last 128B-4Kb then it will significantly reduce the required time to ... |
81. Reading in a delimited file with fields marked by double quote forums.oracle.comHey folks, I have a file I am trying to read in which has text in the format below: "A", "B C", "D" Each field is delimited by a comma and the field marker is a double quote. I tried using String Tokenizer but when I output my tokens, I get each field with a Double_quote around it and what I ... |
82. File read permision forums.oracle.comI have created simple method to check file have read permission or not its code of line of sample this file have no read and write permission File file = new File("A.xml"); try{if (file.canRead()) { String filestr = FileUtils.readFileToString(file); } else { System.out.println("File do not have read permission"); } }catch(Exception ex){ System.out.println("Exception:"ex.toString()); } but file.canRead() method return true and Access denied ... |
83. How do I read custom file properties in Java? forums.oracle.comIn visual basic I can use dsofile.dll to read custom properties (name value pairs that provide information about the document, such as the date and time at which the document was last saved, the last user to modify the document, and so on) of a word, powerpoint, or excel file. Is there a similar capability in Java? |
84. Fastest way to read file. forums.oracle.comI'm reading about 3GB data, which contains text files. I'm creating servlet-based search engine to get results in concordance each time user searches a word I need to read those files and show results like this: 001. but I'll, I'll have a word with her Yeah, have a WORD with her and perhaps she'll like to listen to 002. good and ... |
85. Reading title of File forums.oracle.comThanks for your information. I can understand that sun supplied class are not enough to fetch title and author ( right click properties -> summary -> title/author). Java 1.7 has this feature. But with JNI we can retrieve the information but i dont know which dll needs to be loaded which functions to be call. Please help in that. I hope ... |
86. Unable to read 2 GB file?? forums.oracle.com//// Now this read line method is used to reading one line at a time. Now i had made a class which is using instance of this class. when it run after few minutes give out memory exception ! The other class which is using it is as follows : import java.io.FileNotFoundException; import java.io.IOException; import java.util.HashMap; import java.util.Map; class FileURLSearch { ... |
87. UTF-8 file reading: the first character issue forums.oracle.comAnyway, your code seems to be correct. I wouldn't be surprised if Notepad put some extra character there itself (although only UTF-16 should have the BOM in front). Open the file with a hex editor and see what the first byte is. Or even better, save the file with something else than Notepad. I wouldn't trust that thing at all. Edited ... |
88. Reading file with special characters into a String forums.oracle.com |
89. problem in reading file forums.oracle.compublic void actionPerformed(ActionEvent e) { int returnValue = fileChooser.showOpenDialog(FileChooserTest.this); if (returnValue == JFileChooser.APPROVE_OPTION) { file = fileChooser.getSelectedFile(); try { fileInputStream = new FileInputStream(file); bufferedInputStream = new BufferedReader(new InputStreamReader(fileInputStream)); StringBuilder builder = new StringBuilder(); String text = null; try { while ((text = bufferedInputStream.readLine()) != null ){ builder.append(text); } area.setText(builder.toString()); } catch (IOException ex) { ex.printStackTrace(); } } catch (FileNotFoundException ex) { ... |
90. How to locate a phrase in a file and read the file after that location forums.oracle.comWrite a method that reads a file into a String. Write a method that figures out where in a String a substring occurs (hey, that one might be done for you already...). Write a method that returns a substring of a String, based on a start index and a length (something tells me this one might exist already too). Write a ... |
91. Reading Non standard characters from a file (UTF-8) forums.oracle.comLet me try to explain better. Look at the first line. The string is "" as one character. When I print out the string, it prins out with no issues ( result on last line). When I have the same character in a file and try to read it, the outcome is a "?" insted of "". How can I read ... |
92. Problem reading UTF-8 file forums.oracle.comThe problem is not with reading the files (you're doing that correctly), but with printing them to the console. The console has a default encoding that dictates how characters are written to it and which characters it can represent. The win32 console (a.k.a "the DOS window" or "the command prompt") is notoriously bad at having a sensible character set and therefore ... |
93. Read file until EOF from offset each time forums.oracle.comBut, I do not know the len (length of characters) to be read each time. Remember, I need to read till EOF everytime. Someone suggested me to use the ready() method of BufferedReader, but I'm lost and do not know how to use it. Can someone put up a prototype example depicting this situation? One other suggestion was not to use ... |
94. reading html file forums.oracle.com |
95. Read IMG file forums.oracle.com |
96. Reading values in file and setting checkboxes to true forums.oracle.comI can't see why that code would print out all zeroes and ones at all, when it's actually printing the value of a loop index running from zero to who knows what. And it should either print out all the loop indexes or none of them, depending on whether the hard-coded if-condition is true or false. In other words: that isn't ... |
97. Problem Reading Data from .dat File forums.oracle.com |
98. Best way to read a file forums.oracle.comHi All, I'm curious to know what is the best (fast) way to read a binary file. In particular, I'm thinking if using a BufferedInputStream I can obtain better results. In my opinion the FileInputStream class should be already optimized to read bytes from the underlying OS so that using BufferedInputStream I should not have benefits. If this is true, FileInputStream.read() ... |
99. Multiple File Reading forums.oracle.comHello to all, I am having memory/processing issues with my program. So you can understand it a little better, here's the flow: -The program is supposed to plot some data (up to 86400 points) using the JFreeChart tool -The user chooses the day he wishes to see the data, via a calendar -By choosing the day, the event is triggered and ... |
100. Reading from a file forums.oracle.comI have a series of files with long lists of data. They are seperated out into individual lines and my goal is to go through the files line by line and I want to read a line and stop and store that text into a string. Then I want to use that string as part of a form that the program ... |