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Questions tagged [filewriter]

Java built-in class that allows writing character files.

Public class FileWriter extends OutputStreamWriter.

Convenience class for writing character files. The constructors of this class assume that the default character encoding and the default byte-buffer size are acceptable. To specify these values yourself, construct an OutputStreamWriter on a FileOutputStream.

Whether or not a file is available or may be created depends upon the underlying platform. Some platforms, in particular, allow a file to be opened for writing by only one FileWriter (or other file-writing object) at a time. In such situations the constructors in this class will fail if the file involved is already open.

FileWriter is meant for writing streams of characters. For writing streams of raw bytes, consider using a FileOutputStream.

Since: JDK1.1

Source: Oracle

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Opening an existing file in Java and closing it.

Is it possible to open a file a in java append data and close numerous times. For example: //---- psuedocode //class variable declaration FileWriter writer1 = new FileWriter(filename); fn1: writer.append(data -…
Siddharthan
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Do I need to implement synchronized on writing data to a same file by using BufferedWriter and FileWriter?

I am working on Webmethods Integration Server. Inside there is a java service which is in form of a static java method for writing data to a log file (server.log) by using BufferedWriter and FileWriter. The static method code is like this: public…
null
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Spring Batch FlatFileItemWriter does not write data to a file

I am new to Spring Batch application. I am trying to use FlatFileItemWriter to write the data into a file. Challenge is application is creating the file on a given path, but, now writing the actual content into it. Following are details related to…
Saurabh Deshpande
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java.io.FileWriter: Get the path of File created

I have created an CSV file using java.io.FileWriter and its creating the file in my workspace but I want to display the location (absolute path) of the path where file is created. I know we can use file.getAbsolutePath() if we have created file…
user8268874
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Android save to file.txt appending

I admittedly am still learning and would consider myself a novice (at best) regarding programming. I am having trouble with appending a file in android. Whenever I save, it will rewrite over the file, and I am having trouble understanding how to…
USER_8675309
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Writing data to text file in table format

So far I have this: File dir = new File("C:\\Users\\User\\Desktop\\dir\\dir1\\dir2); dir.mkdirs(); File file = new File(dir, "filename.txt"); FileWriter archivo = new FileWriter(file); archivo.write(String.format("%20s %20s", "column 1", "column 2…
Moko
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Warning: file_put_contents(): failed to open stream: Permission denied

Hi I am new to Mac and web development.. These days I am trying to do a simple web page with a simple form with HTML and Javascript, and the form will be processed by PHP. The PHP will be access txt file, read from and write to this txt file. The…
Mona
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Writing output data to text file gives incomplete result in text file

I have 14 lists and each list have either numeric or string data. Size of each list is 32561. I have to output a file with the format: list1_element1 list2_element1.......................list14_element1 list1_element2 …
user1982519
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FileWriter in java not writing to txt file

I am trying to get input from a JOptionPane and store what the user typed into a text file using the FileWriter class.To make sure that the input from what the user typed was being stored I wrote a system.out and what I typed in the JOptionPane…
user2540802
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FileWriter doesn't write to file even after .flush()/.close()

I am trying to write to a text file but even though the method creates the file if it does not exist, it does not write. I have been through several other posts with a similar issue and followed the advice but had no luck. Through use of the…
Nadeem
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export sqlite into csv

im trying to take data from my sqlite database and write it into csv file and email the information when done writing.i only have one Table with 3 columns in the database.i have DBAdapter and a class that have the Button that the user must press to…
zaamm
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Write file using BufferedWriter in Java

I am doing a lab where we have to read in an external file, take some statistics on the data, and then create and write a new file with the stats. Everything in my program works except for writing the file, which I cannot understand why my method…
Paidenwaffle
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Save matrix to .csv file in R without losing format

I'm trying to write a matrix to a .csv file using the write.matrix from MASS but I'm having some problems. When I print the matrix it look something like this p q s S2 R2 R2adj Cp AIC PRESS 1 0 1…
adjective_name
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FileWriter not writing to file in Android?

I am trying to write to a new file named "filename.txt" and write out "hi" when I open an app. How do I go about this? I run this code in Eclipse, press F11, open up the AVD, and click on the app. I get the "Hello World, appname!" message, but no…
Miguel Diaz
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Deleting file contents android

I need to delete the contents of a file, before I write more information into it. I've tried different ways, such as where I delete the content but the file stays the same size, and when I start writing in it after the deletion, a blank hole appears…
kassy
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