JAVA EE: Java Tutorial : Java IO (FileInputStream)

Monday, 11 July 2016

Java Tutorial : Java IO (FileInputStream)

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Java Tutorial : Java IO (FileInputStream)

myfile.txt

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FileInputStreamDemo.java

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

/*
 * public FileInputStream(String name) throws
 *                          FileNotFoundException
 *  
 * Parameters:
 * ----------
 *  
 * name - the system-dependent file name.
 */

public class FileInputStreamDemo
{
    
    public static void main(String[] args) throws IOException
    {
        FileInputStreamDemo fileInputStreamDemo = new FileInputStreamDemo();
        fileInputStreamDemo.readFile();
    }

    private void readFile() throws IOException
    {
        FileInputStream fileInputStream = 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.
             */
            fileInputStream = new FileInputStream("myfile.txt");
            int i;

            /*
             * Reads a byte of data from this input stream.
             */
            while ((i = fileInputStream.read()) != -1)
            {
                System.out.print((char) i);
            }
        }
        finally
        {
            if (fileInputStream != null)
            {
                /*
                 * Closes this file input stream and
                 * releases any system resources associated
                 * with the stream.
                 */
                fileInputStream.close();
            }
        }
    }

}