JAVA EE: Java Tutorial : Java IO (FileOutputStream-append)

Friday, 15 July 2016

Java Tutorial : Java IO (FileOutputStream-append)

Click here to watch in Youtube :
https://www.youtube.com/watch?v=PQBT52o81pI&list=UUhwKlOVR041tngjerWxVccw

myfile.txt

Peter is coming to India.

FileOutputStreamDemo.java

import java.io.FileOutputStream;
import java.io.IOException;
/*
 * public FileOutputStream(String name, boolean append)
 *                              throws FileNotFoundException 
 *  
 * Parameters:
 * ----------- 
 * 
 * name - the system-dependent file name
 * 
 * append - if true, then bytes will be written to the
 * end of the file rather than the beginning
 */
public class FileOutputStreamDemo
{

    public static void main(String[] args) throws IOException
    {
        FileOutputStreamDemo fileOutputStreamDemo = new FileOutputStreamDemo();
        fileOutputStreamDemo.writeFile();
    }

    private void writeFile() throws IOException
    {
        FileOutputStream fileOutputStream = null;

        try
        {
            /*
             * Creates a file output stream to write to the
             * file with the specified name. If the second
             * argument is true, then bytes will be written
             * to the end of the file rather than the
             * beginning.
             */
            fileOutputStream = new FileOutputStream("myfile.txt",
                    true);
            String str = "\nPeter is coming to India. ";

            /*
             * Converting string into byte array
             */
            byte[] byteArray = str.getBytes();

            /*
             * Writes b.length bytes from the specified byte
             * array to this file output stream.
             */
            fileOutputStream.write(byteArray);
            System.out.println("Successfully written to the file.");
        }
        finally
        {
            if (fileOutputStream != null)
            {
                /*
                 * Closes this file output stream and
                 * releases any system resources associated
                 * with this stream.
                 */
                fileOutputStream.close();
            }
        }
    }

}