Open a file using Java

Write a java program to open a text file. Check if the file already exists. If the file already exists then append data to it. Otherwise program should write 10 lines of text data in the file.

i was told that all i need to do is
BufferedReader in = new BufferedReader(new FileReader(filename));
in.readLine()
then just write to it
but i am not sure on how to do that.
If anyony can help me i would appreciate it..
thanks

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http://java.sun.com/docs/books/tutorial/essential/io/index.html

Error trying to open a file using java.io.* in an Applet

I have a file called wordlist.txt and I am using java.io.* to open it. When I try it
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String inWord = new String("zzz");
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Applets are generally prevented from reading as well as writing files, but appletviewer can load files from the hard drive, so, that is the cause of the behaviour you have observed. To know more about enabling applets load files, you have to sign your applets,
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Open a file using java......... how?

hi all
I have a prob with my code
the problem is by using the FileChooser like
file = fileChooser.getSelectedFile();
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plz help me
Thanx
Regards
Satinderjit

veer ji, try this code on your pc if you can. Click the print button and see that happens. thanx yuvraj:
import java.awt.*;
import java.awt.event.*;
import java.awt.print.*;
//import com.sun.java.swing.*;
import javax.swing.*;
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extends JFrame
implements Printable {
public static void main(String[] args) {
ComponentPrinterFrame cpf = new ComponentPrinterFrame();
cpf.setVisible(true);
public ComponentPrinterFrame() {
super("ComponentPrinterFrame v1.0");
createUI();
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JButton printButton = new JButton("Print");
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How can we open any file using JAVA...

Hi all
i trying to make code in that code i choose a file using a filechooser then put that file name in FILE object like (File file = fileChooser.getSelectedFile();)
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is there any suggestions
Thanx
Regards
Satinderjit

start is a windows command-line utility.
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Path not found
Regards,
Mohamed

Hi Mohamed,
I tried above code after importing JQuery Library through script Tag. It worked for me . Pls check.
Note : You can place Jquery1.xx.xx.js file in the same folder where you saved this IRPT/HTML file.
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<TITLE>Your Title Here</TITLE>
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Want To create Zip file using java,And Unzip without Java Program

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Here is one answer But I want to open that file normal way(
For Exp. using winzip we can create a zip file and also open simply)
http://forum.java.sun.com/thread.jspa?threadID=5182691&tstart=0

Thanks for your Reply,
I m creating a zip file using this program, Zip file Created successfully But when im trying to open .zip file i m getting error like "Canot open a zip file, it does not appear to be valid Archive"
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Can i open a file using applet?

Hi,
I try to open a file using applet.. but an error said "access denied(java.io.FilePermission tempecg.out, read) ...."
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thanks!
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Hi pjustin1,
you must use the policytool.exe given with JDK 1.2.x (or more).
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Christophe.

Open a file using Java

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