Opening/Closing text files

[chris]

I am new to java and I am not quite sure how to write/read from a text file.
Could anyone help me with this and provide and example?

Thanks,
Chris

[Ruchi Dhar]

Java has excellent io package which provides all useful method to do I/O operations.
Here is a quick file copy code. This code reads contents from one file and
writes to another file.

import java.io.*;

public class CopyFile
{

public static void main(String args[]) throws IOException
{
if(args.length != 2)
{
System.out.println("Usage java CopyFile <srcFile> <destFile>\n");
System.exit(0);
}

final File srcFile = new File(args[0]);
if(!srcFile.exists())
{
System.out.println(srcFile.getAbsolutePath() + ": Is not existing");
System.exit(0);
}

BufferedReader in = new BufferedReader(new FileReader(srcFile), 4096);
PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(args[1]),
4096), true);
String line = "";
while((line = in.readLine() != null)
out.println(line);
out.close();
in.close();
}
}


"chris" <christopher_ack@yahoo.com> wrote:
>
>I am new to java and I am not quite sure how to write/read from a text file.
> Could anyone help me with this and provide and example?
>
>Thanks,
>Chris

[Gene]

note: not to state the obvious, but file I-O is only possible in a Java application.
Not possible in an applet or recommended in an EJB. Otherwise the response
is correct and accurate.



"Ruchi Dhar" <rdhar@verticalnet.com> wrote:
>
>Java has excellent io package which provides all useful method to do I/O
operations.
>Here is a quick file copy code. This code reads contents from one file
and
>writes to another file.
>
>import java.io.*;
>
>public class CopyFile
>{
>
> public static void main(String args[]) throws IOException
> {
> if(args.length != 2)
> {
> System.out.println("Usage java CopyFile <srcFile> <destFile>\n");
> System.exit(0);
> }
>
> final File srcFile = new File(args[0]);
> if(!srcFile.exists())
> {
> System.out.println(srcFile.getAbsolutePath() + ": Is not existing");
> System.exit(0);
> }
>
> BufferedReader in = new BufferedReader(new FileReader(srcFile), 4096);
> PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(args[1]),
>4096), true);
> String line = "";
> while((line = in.readLine() != null)
> out.println(line);
> out.close();
> in.close();
> }
>}
>
>
>"chris" <christopher_ack@yahoo.com> wrote:
>>
>>I am new to java and I am not quite sure how to write/read from a text
file.
>> Could anyone help me with this and provide and example?
>>
>>Thanks,
>>Chris
>