1. How to make Java read very big files using Scanner? stackoverflow.comI'm using the following basic function which I copied from the net to read a text file |
2. How to obtain position in file (byte-position) from java scanner? stackoverflow.comHow to obtain a position in file (byte-position) from the java scanner? |
3. Java Scanner won't follow file stackoverflow.comTrying to tail / parse some log files. Entries start with a date then can span many lines. This works, but does not ever see new entries to file. |
4. reading file through scanner device in java stackoverflow.comhow can i read file of any type using scanner hardware device in java |
5. Can you jump a scanner to a location in file or scan backwards? stackoverflow.comI have a very large text file and I need to gather data from somewhere near the end. Maybe Scanner isn't the best way to do this but it would ... |
6. Scanner + System.in stop condition stackoverflow.comI'm reading a file with Scanner + System.in. My command in Linux looks like: |
7. Java Scanner unable to read file stackoverflow.comI'm doing a very simple text-parsing program, using files given to me by a friend. However, when I open the file using a Scanner like so, |
8. java.util.Scanner malfunctioning while reading large files stackoverflow.comI wrote a program where I used a Scanner to read lines from log files and parse each line to find something important. It is important that I read every line ... |
9. How to get the name of a File that is in a Scanner Object in java? stackoverflow.comHello: I was given a Scanner that is a File. Something like this: |
10. Why is the variable read from the Scanner method next() or nextDouble() equal to a String or double respectively stackoverflow.comFor example, If I declare a String variable and a double variable |
11. Scanner in Java stackoverflow.comwhen I try to scan the folder Files it gives me an error saying access is denied. The folder contains txt files to scan through. |
12. how can I get end of file in java using Scanner stackoverflow.comI am getting input from Scanner and system.in and I want to get the enter from output. I have a loop as while(keyboard.hasnext()) do something. But when I hit enter it ... |
13. Java, Memory usage for "Scanner" stackoverflow.comI'm running an online automatic program evaluation platform and for one of the exercises the Java "Scanner" is using way too much memory (we are just starting to support Java so ... |
14. Basic Inquiry about Java Scanner stackoverflow.comI'm trying to get Java's scanner to keep accepting input until the user types some variation of "end," like, "END", "eNd", "eND", etc. However, due to my limited experience with Scanner, I ... |
15. Java scanner not going through entire file stackoverflow.comI'm writing a program in Java and one of the things that I need to do is to create a set of every valid location for a shortest path problem. The ... |
16. Interfacing with a Barcode scanner? coderanch.com |
17. Scanner and nextChar? coderanch.com |
18. Question: Scanner and nextLine coderanch.comI've created a file, named myfile.txt, which contains nothing in it except one linebreak (no text, and no more than one linebreak). When I run the following code, I don't get an exception: import java.util.Scanner; import static java.lang.System.out; import java.io.*; class More { public static void main(String args[]) throws IOException { Scanner scanner = Scanner.create(new File("myfile.txt")); out.printf(">>%s<<\n", scanner.nextLine()); out.printf(">>%s<<\n", scanner.nextLine()); out.printf(">>%s<<\n", ... |
19. how to read the scanner coderanch.com |
20. Using Scanner to read a single character coderanch.comUm, won't nextInt() throw an InputMismatchException if the next token isn't a text representation of a number? It's like calling Integer.parseInt("foo") - there's no way to interpret that as a number. For what Barry wants - well, I'm actually a bit surprised there's no direct method for this. Hunh. I don't really see any good answer desides the obvious: Call scanner.next() ... |
21. Scanner coderanch.com |
22. SCANNER API and Sorting coderanch.comI have a scanner reading a comma delimited file. It write three fields to a text file. I need to sort this file while looping through the file. If the first field matches the first field of subsequent lines and the second field does not match the fields if the outer if test I need to increment a counter. Any suggestions? ... |
23. Scanner and SortedSet coderanch.comI am using a scanner to scan a text file and write out three fields to another text file. I need to sort the file based on the taxID and a deeper sort based on classcode. if the taxId is the same and the classcode is different then I need to increment the counter and print the line. If taxId and ... |
24. Reading from multiple files using Scanner to extract data coderanch.comHi, I'm trying to write a programme which searches through a file directory and extracts the emails from each file (for insertion into a database for an internal login system so it never sees the actual files) and have got myself out of my depth. Separately my two scripts read the fle directory and return the list and the pattern matching ... |
25. delimiters and Scanner class coderanch.combeginner programmer having trouble with Scanner and delimiters. Here is the code that does not work: import java.util.Scanner; public class ScannerTester { public static void main(String[] args) { Scanner s = new Scanner(System.in); System.out.println("Enter a double "); double d = s.nextDouble(); System.out.println("Your double is " + d); System.out.println("enter some more text\n"); String thisString = s.nextLine(); System.out.println(thisString); } } The problem is ... |
26. how to read a Chinese character file using Scanner ? coderanch.comHi Edward, The Scanner class is used for parsing of String data using regular expressions. The locale can affect how characters are interpreted in relationship to regular expressions that you may use with the scanner. The Scanner class doesn't have anything to do with displaying of characters. I suspect that you are using additional code such as System.out.println() statements. Depending on ... |
27. Pipe Seperated file using Scanner coderanch.com |
28. Use enf of file character in Scanner coderanch.comI'm using scanner to fetch input from inputstream(System.in) The challenge is: 1) After printing the values , the connection to inputstream is not closed i.e it is ready to accept input values from System.in when it is not needed, atleast in my case. 2) So how to make the scanner find the end of file from the input stream. import java.util.Scanner; ... |
29. Reading a file using Scanner coderanch.comThank you for the reply. I have placed a 'SelfEmployedA.txt' file in the same directory from which I am running the application. It also does not seem to want to work. I really am baffled. //this is the Application program C:\Installs\Java\Workspace\NetBeans\Projects\MyProjects\src\packagetwo\TSD2.java //this is the file in the same directory C:\Installs\Java\Workspace\NetBeans\Projects\MyProjects\src\packagetwo\SelfEmployedA.txt //these are picked up in the hard coded directory in the ... |
30. scanner.hasNext() for System.in coderanch.comHi All, Why cant I end the loop and break off from my application when I use a Scanner? why scanner.hasNext() always returns me true for (System.in)? Is there any way, I can break off the while scanner.hasNext() loop ? I dont want any end of line indicator to be given by the user.. Please advice, thanks in advance! |
31. Using Scanner need help comparing two files so I can write out data I need. coderanch.comTrying to compare two files one has 3 million records the other has 250,000 I want to loop through scanner with scanner2 line by line so if there is a match I can then substring file Number and a couple other fields off the file with 3 million records. Currently I can only put in a file number and find one ... |
32. How to use Scanner and reg exp to break up string coderanch.comI am trying to use Scanner to break up a string that i read in from file. File data is: RFH ^@^@^@^B^@^@^@^@^@^A^Q^@^@^D ^@^@^@^@^@^@^D^@^@^@ |
33. Scanner - Help coderanch.com |
34. Scanner to read values from a file and Locale problems for nextDouble() coderanch.com |
35. how to read barcode code 39 type from scanner? coderanch.comMaybe this? http://www.ccdscanner.net/barcode-scanner-rs232-wisnap-wifi-rs232-serial-adapter-with-osx-and-javaterm.html It uses Java IO. Maybe you could find the program used? cc11rocks EDIT : The program they use is "JavaTerm" I believe. It is for all platforms and is made in Java. Maybe you'll figure something out with this? http://serialio.com/support/jspJavaTerm.php EDIT (2) : In this next article, I found these (Same website, different webpage) : http://serialio.com/products/serialport/packages.php "Java Source ... |
36. Using Read/Write From File Using Scanner java-forums.orgOk, I'm created a rental car service program that allows the user to input their information and receive the results in a joptionpane dialog box. Now, I have to create a text file that will show the information exactly how the user has entered it and the same exact way that it shows up in the joptionpane dialog box. I've created ... |
37. Reset a Scanner to the beginning of a file java-forums.orgimport java.io.IOException; import java.io.StringReader; import java.util.Scanner; public class ScannerEg { public static void main(String[] args) throws IOException { String data = "This is a\nthree line\nimitation file"; StringReader in = new StringReader(data); Scanner scanner = new Scanner(in); int counter = 1; //while(scanner.hasNext()) { // System.out.printf("%d: %s%n", counter++, scanner.next()); //} //System.out.printf("%d: %s%n", counter++, scanner.next()); scanner.next(); in.reset(); while(scanner.hasNext()) { System.out.printf("%d: %s%n", counter++, scanner.next()); } ... |
38. trouble with Scanner(new File("input")); java-forums.orgHello, I am having trouble with the File method, it gives the error, even though the files input1 and input2 are plain text files and located in the directory where it is executing.... "Exception in thread "main" java.lang.Error: Unresolved compilation problems: Unhandled exception type FileNotFoundException Unhandled exception type FileNotFoundException at compare.main(compare.java:9) " My code is: import java.io.*; import java.util.Scanner; public class ... |
39. Scanner to write a new file forums.oracle.com |
40. How Do I set up Scanner for .dat file forums.oracle.comCreate your file with any text editor. When saving file use "save as". Name the file with a ".dat" extension. Be sure to specify the file type as a plain text file (*.txt). Don't worry the ".dat" extension name will remain the same. You may want to change the code to call the input file as follows: Scanner inFile = new ... |
41. Need help with java file scanner and objects forums.oracle.comHi, i've got an assignment that asks me to do these, but i cant seem to get around in solving it. Any help will be much appreciated. TYVM! Create a class called TVProgram that can store some important details of a television program: - name of the show - the channel the show is on - the start time (in 24-hour ... |
42. Using Scanner to read .java files - maintain structure forums.oracle.com |
43. Which is better : read file using Scanner or defined my own TextReader forums.oracle.comHi, I want to make a java program that counts the number occurence of words in a text file. For example, i run my file then the output : You =1 are=2 ..... When i decided to read the file, however i found that rather than defined my own TextReader, i can also use the Scanner. I try to run both ... |
44. File scanner help forums.oracle.comWell it is clear as mud what you are trying to do and what your problem is. Can you post expected output as well as actual output so we can compare. For now, what is the purpose of s in your main method? You return a string from the checkFile() method and store it in s but then do nothing with ... |
45. why cant i find fine my file??? using scanner forums.oracle.comI read the API about the File class but i still didn't understand it, im really new to programming and so it sounded really confusing. My professor just put in the file name and it worked when he showed us, he was using windows, im using ubuntu. Could that be the problem? |
46. Follow Up to Scanner Input from File forums.oracle.comWhat I meant by first line, was the current line. Edit: Sorry, I didn't get your meaning. I think what you meant was what would happen if the first line was blank? The j-- fixes that problem, so that it finds the correct start location. And it works. And I figured that the username's length was directly related to the numAccounts ... |
47. Scanner Input from File forums.oracle.comI already have something else that is handling non-existent files, so I don't need to do anything there. And thank you very much, I figured out how to do it! I just needed to temporarily store the line, see if it was longer than 1 in length, and perform based on that. Thank you very much! Edited by: ManiKatti on Dec ... |
48. Opening a file with Scanner FUNNY CODE forums.oracle.com} } } } ANYTHING WRONG WITH THIS? I'M TRYING TO COMPARE THE FIRST LINE OF A TXT FILE WITH ALL THE lines from the other file. HOWEVER, When i run it, t.hasNext() STARTS READING FROM THE 4TH LINE OF THE FILE. I can't figure it out. help please thanks Edited by: lsn67a02j3 on Mar 21, 2009 7:35 PM Edited by: ... |
49. Problem Scanner when file is too big forums.oracle.comThe file contains text only... When I print that line, nothing seems to be different to another line printed before... Thanks a lot for trying to help me. I don't have a lot of time, so if I don't find the problem quickly, I think I'm gonna remove that line and continue with the following... |
50. Reading a file with "Scanner" gives NoSuchElementException forums.oracle.com |
51. Reset scanner to beginning of file forums.oracle.com |
52. how to take scanned file from scanner directly to application forums.oracle.com |
53. Working with scanner which can't find my file forums.oracle.comHi, all: I'm working with the Scanner class for the first time, and I'm trying to go through the tutorial. I'm using Eclipse. When I try to access the file called "xanadu.txt" when running the application ScanXan, I'm throwing a file not found exception. I have the file xanadu.txt in the same location as the class file, and for good measure ... |
54. reading a file with scanner forums.oracle.com |
55. Problem - Scanner.java file not found forums.oracle.comHello all, I've been having a problem with a Java installation on windows vista. I've installed both the Java 2 1.4.2_16 sdk, and the Java EE 5 update 3 sdk. However, neither install contains the Scanner.java file... On my desktop running XP, this is not the case. I've tried reinstalling but to no avail. My classpath is set correctly because my ... |
56. Scanner to read data from file forums.oracle.comi pretty sure he means he want to get the value of abc and store in a string called"a" if so, your txt file format should be Abc Bcd Cde and then after that u can read the text file using bufferedreader [code] FileReader FR=new FileReader(TheFileHere); BufferedReader BR=new BufferedReader(FR); String a=BR.readLine(); String b=BR.readLine(); String c=BR.readLine(); |
57. Scanner and reading data from file and parsing into objects HELP! forums.oracle.com |
58. Trying to read a file with Scanner forums.oracle.com |
59. Scanner Reading Files forums.oracle.com |