Java Tutorial : Java IO (FileInputStream and FileOutputStream)

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Java Tutorial : Java IO (FileInputStream and FileOutputStream) 

myinputfile.txt

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FileReadWriteDemo.java

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileReadWriteDemo
{

    public static void main(String[] args) throws IOException
    {
        FileReadWriteDemo fileReadWriteDemo = new FileReadWriteDemo();
        fileReadWriteDemo.readAndWriteFile();
    }

    private void readAndWriteFile() throws IOException
    {
        FileInputStream fileInputStream = null;
        FileOutputStream fileOutputStream = null;

        try
        {
            /*
             * Creates a FileInputStream by opening a
             * connection to an actual file, the file named
             * by the path name name in the file system.
             */
            String inputFileName = "myinputfile.txt";
            fileInputStream = new FileInputStream(inputFileName);
            /*
             * Creates a file output stream to write to the
             * file with the specified name.
             */
            String outputFileName = "myoutputfile.txt";
            fileOutputStream = new FileOutputStream(outputFileName);
            int i;

            /*
             * Reads a byte of data from this input stream.
             */
            while ((i = fileInputStream.read()) != -1)
            {
                /*
                 * Writes the specified byte to this file
                 * output stream.
                 */
                fileOutputStream.write(i);
            }

            System.out
                    .println("Successfully read and "
                            + "writen to the \'" + outputFileName
                            + "\'file.");
        }
        finally
        {
            if (fileInputStream != null)
            {
                /*
                 * Closes this file input stream and
                 * releases any system resources associated
                 * with the stream.
                 */
                fileInputStream.close();
            }
            if (fileOutputStream != null)
            {
                /*
                 * Closes this file output stream and
                 * releases any system resources associated
                 * with this stream.
                 */
                fileOutputStream.close();
            }
        }
    }

}

Output

Successfully read and writen to the 'myoutputfile.txt'file.

myoutputfile.txt

Peter is going to India

Click the below link to download the code:
https://sites.google.com/site/javaee4321/java/JavaIODemo_FileInputStream_FileOutputStream_App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/JavaIODemo_FileInputStream_FileOutputStream_App

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/8856efd41d266466f6a6531fd665f7cfc37ad73f/BasicJava/JavaIODemo_FileInputStream_FileOutputStream_App/?at=master

See also:

All JavaEE Viedos Playlist

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Java Collection Framework Tutorial

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