FileInputStreamDemo

import java.io.*;
public class FileInputStreamDemo
{
	public static void main(String args[])
	{
		if (args.length != 0)
		{
		System.err.println ("Syntax - FileInputStreamDemo file");
			return;
		}
		try
		{
                    // Membuat input stream yang membaca dr file
                    InputStream fileInput = new FileInputStream ("mytext.txt");

                    int data = fileInput.read(); // Baca byte ke 1

                    while (data != -1) // ulangi : hingga end of file (EOF) dicapai
                            {
                            System.out.write ( data ); // menampilkan byte data ke console
                            data = fileInput.read(); // baca byte berikutnya
                            }

                    fileInput.close(); // Close the file
		}
		catch (IOException ioe)
		{
			System.err.println ("I/O error - " + ioe);
		}
	}}



###Copy Lines
import java.io.FileReader;
import java.io.FileWriter;
import java.io.BufferedReader;
import java.io.PrintWriter;
import java.io.IOException;
public class CopyLines {
    public static void main(String[] args) throws IOException {
        BufferedReader inputStream = null;
        PrintWriter outputStream = null;
        try {
            inputStream = new BufferedReader(new
            FileReader("charStreamsText.txt"));
            outputStream = new PrintWriter(new
            FileWriter("characteroutput.txt"));
            String l;
            int cu = 0;
            while ((l = inputStream.readLine()) != null) {
                outputStream.println(l);
                System.out.println(cu);
                cu += 1;
            }
        } finally {
        if (inputStream != null) {
            inputStream.close();
            }
        if (outputStream != null) {
            outputStream.close();
            }
        }
    }
}



###CopyBytes

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class CopyBytes {
    public static void main(String[] args) throws IOException {
        FileInputStream in = null;
        FileOutputStream out = null;
        try {
            in = new FileInputStream("byteStreamsText.txt");
            out = new FileOutputStream("outagain.txt");
            int c;
            while ((c = in.read()) != -1) {
                out.write(c);
            }
        }
        finally {
            if (in != null) {
            in.close();
            }
            if (out != null) {
            out.close();
            }
        }
    }
}



####CopyCharacters

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
public class CopyCharacters {
    public static void main(String[] args) throws IOException {
        FileReader inputStream = null;
        FileWriter outputStream = null;
        try {
            inputStream = new FileReader("charStreamsText.txt");
            outputStream = new FileWriter("characteroutput.txt");
            int c;
            int cu = 0;
            while ((c = inputStream.read()) != -1) {
            outputStream.write(c);
            System.out.println(cu);
            cu += 1;
            }
            }
        finally {
            if (inputStream != null) {
                 inputStream.close();
            }
            if (outputStream != null) {
                outputStream.close();
            }
        }
    }
}

###ScanSum

import java.io.FileReader;
import java.io.BufferedReader;
import java.io.IOException;
import java.util.Scanner;
import java.util.Locale;

public class ScanSum {
    public static void main(String[] args) throws IOException {

        Scanner s = null;
        double sum = 0;

        try {
            s = new Scanner(new BufferedReader(new FileReader("usnumbers.txt")));
            s.useLocale(Locale.US);

            while (s.hasNext()) {
                if (s.hasNextDouble()) {
                    sum += s.nextDouble();
                } else {
                    s.next();
                }
            }
        } finally {
            s.close();
        }

        System.out.println(sum);
    }
}



####FileOutputStreamDemo

import java.io.*;
public class FileOutputStreamDemo
{
    public static void main(String args[])
    {
        if (args.length != 0)
        {
            System.err.println ("Syntax - FileOutputStreamDemo src dest");
            return;
        }
        String source = "mytext.txt";
        String destination = "myout.txt";
        try
        {
            // Open source file for input
            InputStream input = new FileInputStream(source);
            System.out.println ("Opened " + source + " for reading.");
            OutputStream output = new FileOutputStream (destination); 	// Ouput output file for output
            PrintStream pout = new PrintStream(output);
            System.out.println ("Opened " + destination + " for writing.");
            int data = input.read();
            while ( data != -1)
            {
                // Write byte of data to our file
                output.write (data);
                // Read next byte
                data=input.read();
            }
            // Close both streams
            pout.println("aku disini");
            input.close();
            output.close();
            System.out.println ("I/O streams closed");
        }
        catch (IOException ioe)
        {
            System.err.println ("I/O error - " + ioe);
        }
    }
}