changing the file content

changing the file content

I have requirement like this, a file contain maximum 1000 lines. I want to cahnage the 501 line content. I know this logic , reading the file content and changeing the 501 line content and crating one more file and storing this changeing information

String line=null;
String fileContent=""

while((line.bufferedReader.readLine())!=null) {
         fileContent+="";
         // code for to chang the 501 line content.
}

// heare we are creating one more file

BuffredWriter br=new BufferedReader(new FileWriter("newfile.txt")); br.write(fileContent);

i know this logic . I want only one word in 501 line but it take lot of time to read all content of old file and storing in new file.

Please help me ,Is there any better logic to chang content in the file without creating new file?

View Answers









Related Tutorials/Questions & Answers:
changing the file content
changing the file content  I have requirement like this, a file... , reading the file content and changeing the 501 line content and crating one... in 501 line but it take lot of time to read all content of old file and storing
Changing Executable Jar File Icon
Changing Executable Jar File Icon  I have created an executable jar file for my java program and the icon that appears is the java icon. I will like...;Hi, You may use JSmooth to create executable java file and also associate icon
Advertisements
Changing loacation for file object - JSP-Servlet
Changing loacation for file object  Hai, For uploading a file i used the FileOutputStream() method. And uploading works perfectly. This method allows parameter as file name or the full path(that is from the drive
how to modify content of XML file
to xml file to replace "XYZ".Every time with the content of text box the file should...how to modify content of XML file  hi, I want to modify content of a xml file.There are two tags of similar name say <ContentName>C:\Myinfo
Java File content type
Java File content type In this section, you will learn how to get the content type of the specified file. Description of code: This is essential part of the file. In various applications, there is a use of content type. Here we
ModuleNotFoundError: No module named 'prometheus-file-content-exporter'
ModuleNotFoundError: No module named 'prometheus-file-content-exporter' ...: ModuleNotFoundError: No module named 'prometheus-file-content-exporter' How to remove the ModuleNotFoundError: No module named 'prometheus-file-content-exporter'
how to display the excel file content in the jsp
how to display the excel file content in the jsp  How to present the content of the newly created excel file in the following jsp to the web browser: print("code sample"); <%@ page import="java.io.InputStream" %>
Storing content from file path to an array
Storing content from file path to an array  Hi, I have a path... would like to access the "Animation.txt" file from this path and store the contents in this text file to an array. I am using jsp. I can access my path but how
changing of data...
data changing in 10 second  hi.... i have created a servlet page using a response.setheader(); method.in the parameter i have given 10 second.but... is not changing in 10 second...what should i do..?? reply fast
changing of data...
changing of data...  hi.... i have created a servlet page using a response.setheader(); method.in the parameter i have given 10 second.but once... is not changing in 10 second...what should i do..?? reply fast
changing of data...
servlet.database is not changing in 10 second  hi.... i have created a servlet page using a response.setheader(); method.in the parameter i have... this servlet.database is not changing in 10 second...what should i do..?? reply fast
iterate through map and write the content in a separate file
iterate through map and write the content in a separate file  I am trying to save the data from file to a map, then iterate through map and write... through the above file and save it in maps depending on if it is a concept
iterate through map and write the content in a separate file
iterate through map and write the content in a separate file  I am trying to save the data from file to a map, then iterate through map and write... through the above file and save it in maps depending on if it is a concept
iterate through map and write the content in a separate file
iterate through map and write the content in a separate file  I am trying to save the data from file to a map, then iterate through map and write... through the above file and save it in maps depending on if it is a concept
How to write content of one file to another file.
; In this example we will open a file and then write the content in new file... is : 1836825431 Content of one file successfully written in other file... of the data being written in the second file. About CheckedOutputStream class
Write a program in Java to append content at the end of an already existing file.
Write a program in Java to append content at the end of an already existing file.  Write a program in Java to append content at the end of an already existing file
Program to read a dynamic file content - Java Beginners
Program to read a dynamic file content  Hi, In a single folder daily date wise the datas will be stored automatically in the .txt format...", "020209.txt", "030209.txt","040209.txt". In a single file I'll get the datas
Java display file content in hexadecimal format
Java display file content in hexadecimal format In this section, you will learn how to read the file content and display it in hexadecimal format. Reading a file is a common task but here we are going to display the file data
Read content for JPEG image File in Java - Java Beginners
Read content for JPEG image File in Java  How to Read content for JPEG image File in Java? or Extract text from JPEG image File in Java
How to delete content of a log file from linux terminal?
How to delete content of a log file from linux terminal?  Hi, My... running queries. But first I want to delete the content of the /var/log/slow-queries.log file. Can anyone tell me how to do this? Thanks   Hi, Its
How to write content of one file to another file and calculate checksum for accuracy.
on the output stream.  In this Example, we will write the content of a file to another file. And calculate the value of checksum at writing time with the help of CheckedOutputStream class. After it we will read the content of new file
Changing pictures - Java Beginners
Changing pictures  I found some html code that allows pictures to be changed on a web page. I copied the code and saved it as an html file. when I... Explorer that have pictures changing on them and they do not get blocked? 
changing uiview background color
changing uiview background color  changing UIView background color in ios   self.view.backgroundColor = [UIColor colorWithRed:244.0f/255.0f green:230.0f/255.0f blue:183.0f/255.0f alpha:1.0f
Changing MySQL Port Number
Changing MySQL Port Number  How to change the MySQL port no in windows.   Hi, Open the my.ini file present in the MySQL server... to the desired port number. After making change in my.ini file save the file
How to read content of JPEG file in Java?
Example of reading the content of JPEG file in Java Java JAI API helps... in the Java Program. In this article we will see how to read the JPEG image file. We will use the javax.imageio.ImageIO class for reading the image file data
Changing root Password
Changing root Password  how do i change the root password in mysql
How to copy many files into one file and how to manage the content of the final file?
How to copy many files into one file and how to manage the content of the final file?  Hi, i'm trying to code that copy the content of all txt file... is it possible to put the content of each file below the other one ? Here is my
Show content of .vm file as output using Velocity
Show content of .vm file as output using Velocity  ... content of .vm file using velocity and also shows how to use Iterator......" in StringOutput.vm file, that message will be show as output.    
how to print the content of file in 2d matrix having same dimension as given in file(n*m).
how to print the content of file in 2d matrix having same dimension as given in file(n*m).   here is code: import java.io.File; import... IOException { Scanner s = new Scanner(new File("rfg.txt")); List list = new
Changing 2D graph using slider.
Changing 2D graph using slider.  Code for changing a 2d graph with help of slider
How to read and compare content of two different text file
Description: In the given example you will see how a two text file's content... of comparison is in such a way that it takes content of a file and assign it to as a string andthen compare it with the other file's content which too assigned
changing selection color of <button>
changing selection color of   dear all, i have loaded image in border less button tag when button is selected with tab key i get brown color rectangle around image. how do i change color of that rectangle from brown to white
Change a file timestamp
C:\vinod\Math_package>javac ChangeFileDate.java C:\vinod\Math_package>java ChangeFileDate Change file timestamp example! Enter file name with extension: StrStartWith.shtml Enter last
Changing JLabel with a jcombobox - Java Beginners
Changing JLabel with a jcombobox  Hi, I have a JLabel which should change when i select an item from JCombobox.I have some calculations after i get a value from the combo,the result of which i have to display using a JLabel I
Changing the message box to a specific color
Changing the message box to a specific color  How do you change the message box color to a specific color? I can get the color to change with each input but i cant give it a specific color. Example I'm trying to change
Changing background color using JavaScript
Changing background color using JavaScript  Hi Sir Is there any way to change the background color using JavaScript ? Please mention code with your answer.   Hello Friend Pass the element & color in the given
changing Background Color
changing Background Color       In this program, we are going to tell you how you can change background color of a pdf file. You can change the background color
changing final Boolean value in SwingUtilities.invokeLater()
changing final Boolean value in SwingUtilities.invokeLater()  Hi, I have a problem with setting final Boolean value in second time. But it is necessary to me. Have You any Idea of this Scenario? Here is my code: public
changing primary key of parent table
changing primary key of parent table  I want to change one primary key from a table where primary key is auto created? How can I do that? I have tried UPDATE person SET personid=3494 WHERE personid=8483; and i get the following
How to design a changing color of the chameleon, changing color of the chameleon, color of the chameleon
How to design a changing color of the chameleon       Have you seen the chameleon to changing... window.  Save File: Now go to File menu > Save optimized.ADS
How to Changing Toolbar Color using iPhone Application ?
How to Changing Toolbar Color using iPhone Application ?  Hi, i have developing a small application to changing the toolbar color in iphone. But i have facing the problem that color is not changing. Can somebody suggest me
Copy one file into another
Copy one file into another In this section, you will learn how to copy content of one file into another file. We will perform this operation by using...;This string is copied from one file to another\n"); bf.close(); InputStream
How to copy a file in java
a content of one file to another file. In java, File API will not provide any direct way to copy a  file.  What we can do is, read a content of one... a content of one file to another file. import java.io.FileInputStream; import
FILE
the content of the file. import java.io.*; public class Appliance { public...;Java Read content of File import java.io.*; public class Appliance { public...FILE  There is a file named Name.txt that contains information
how to reverse a string without changing its place
how to reverse a string without changing its place  how to reverse a string without changing its place   Hi Friend, Another way of reversing string: import java.util.*; public class ReverseString{ public static
Showing content of a file using JSP & jQuery
Showing content of a file using JSP & jQuery In this tutorial , we.... In this example, the content of the text file is fetched and display on the browser...); } input.close(); %>  Content of the text file (rose.txt): Welcome
font changing
Changing from Struts 1.2 to Struts 2.0 in Application
Changing from Struts 1.2 to Struts 2.0 in Application  Hi All, We have a financial application which is running successfully on struts 1.2 and java 1.4. Since this are old versions and obsoleted from market. We want to use
jQuery Load Content
; In this section you will learn how to load content of a text file using jQuery... you will be able to use jQuery to Load the content from server side text file... fileADS_TO_REPLACE_5 Here is the content of the text file: Welcome
Viewing contents of a JAR File
Viewing contents of a JAR File       This section shows you how you can read the content of jar file... content, a default manifest file, META-INF/MANIFEST.MF. The default manifest file

Ads