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Write to a file
As we have read about the BufferedOutputStream class that store the data in an internal buffer and lets you write characters to a stream. Lets see an example that writes the text "Hello Java" to the existed file.

Write to a file

As we have read about the BufferedOutputStream class that store the data in an internal buffer and lets you write characters to a stream. Lets see an example that writes the text "Hello Java" to the existed file.

The given example uses the BufferedOutputstream class that writes the bytes to the output stream. The output stream is a file "Filterfile.txt" in which the data is written in form of a byte. The getBytes( ) method of the String class returns the bytes from the string.


import java.io.*; 



class WriteFilter

{

    public static void main(String args[])

    {

    String str="Hello Java";

        try 

        {

      FileOutputStream fos = new FileOutputStream("Filterfile.txt");

            BufferedOutputStream bos = new BufferedOutputStream(fos);

      

            // Now write to the buffered stream.

           bos.write(str.getBytes());

          
bos.flush();

                System.out.print("the data has been written");                 

        } 

        catch (Exception e) 

        {

            System.err.println("Error writing to a file: " + e);

        }

    }

}

Output of the Program:

C:\nisha>javac WriteFilter.java

C:\nisha>java WriteFilter
the data has been written
C:\nisha>

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Current Comments

1 comments so far (post your own) View All Comments Latest 10 Comments:

So this creates a Filterfile.txt and contains "Hello java". Instead of containing "Hello Java" how would we make it so the new .txt file contains contents from another file?

Thanks

Posted by backslash on Tuesday, 04.7.09 @ 12:05pm | #86594

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