/////////////////////////////////////////////////////////////////////
// (C) Michael A Smith 1997-2000 University of Brighton            //
//     http://www.cem.brighton.ac.uk/staff/mas                     //
//     From the book Java An Object-Oriented Language              //
//     Java 2 Application / Applet                                 //
//     Hence may not work with a JDK 1.0.1 / 1.1.* Compiler        //
/////////////////////////////////////////////////////////////////////
// Version automatically created  Tue 06 Dec 2011 19:52:48 GMT  //
/////////////////////////////////////////////////////////////////////

import java.io.Serializable;
import java.io.FileOutputStream;
import java.io.FileInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.DataOutputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.EOFException;
import java.io.PrintWriter;
import java.io.BufferedReader;
import java.io.BufferedInputStream;
import java.io.StringBufferInputStream;
import java.io.StringReader;
import java.io.FileNotFoundException;
import java.io.FileDescriptor;

// So if you want to implement serializable can not do it 
//  by inheriting from Account 


class Main
{
  public static void main( String argsx[] )
  {
    System.out.println("Example  1"); Main.main1();
    System.out.println("Example  2"); Main.main2();
    System.out.println("Example  3"); Main.main3();
    System.out.println("Example  4"); Main.main4();
    System.out.println("Example  5"); Main.main5();
    System.out.println("Example  5"); Main.main6();
    String args[] = { "file.dat" };
    System.out.println("Example  7"); Main.main7( args );
    System.out.println("Example  8"); Main.main8();
    System.out.println("Example  9"); Main.main9();
    System.out.println("Example 10"); Main.main10();
  }


  // Binary O OUTPUT 

  public static void main1()
  {
    try
    {
      final int NUMBER = 5;
      FileOutputStream ostream = new FileOutputStream("file.dat");
      DataOutputStream dos     = new DataOutputStream( ostream );

      dos.writeInt( NUMBER*2 );
      for ( int i=1; i<=NUMBER; i++ )
      {
        dos.writeInt( i );
      }
      dos.flush();
      ostream.close();
    }
    catch ( IOException e )
    {
      System.out.println("IOException : " + e.getMessage() );
    }
  }

  // Binary O OUTPUT append 

  public static void main2()
  {
    try
    {
      final int NUMBER = 5;
      FileOutputStream ostream = new FileOutputStream("file.dat", true);
      DataOutputStream dos     = new DataOutputStream( ostream );

      for ( int i=NUMBER+1; i<=NUMBER*2; i++ )
      {
        dos.writeInt( i );
      }
      dos.flush();
      ostream.close();
    }
    catch ( IOException e )
    {
      System.out.println("IOException : " + e.getMessage() );
    }
  }

  // Binary O INPUT 

  public static void main3()
  {
    try
    {
      FileInputStream istream = new FileInputStream("file.dat");
      DataInputStream dis     = new DataInputStream(istream);

      int items = dis.readInt();

      for( int i=1; i<=items; i++ )
      {
         int n = dis.readInt();
         System.out.print( n + " " );
      }
      System.out.println();
      istream.close();
    }
    catch ( IOException e )
    {
      System.out.println("IOException : " + e.getMessage() );
    }
  }

  // Text O OUTPUT 

  public static void main4()
  {
    try
    {
      final int NUMBER = 5;
      FileOutputStream ostream = new FileOutputStream("file.dat");
      PrintWriter pw           = new PrintWriter( ostream );

      pw.println( NUMBER*2 );
      for ( int i=1; i<=NUMBER; i++ )
      {
        pw.print( " " ); pw.print( i );
      }
      pw.flush();
      ostream.close();
    }
    catch ( IOException e )
    {
      System.out.println("IOException : " + e.getMessage() );
    }
  }

  // Text O OUTPUT Append 

  public static void main5()
  {
    try
    {
      final int NUMBER = 5;
      FileOutputStream ostream = new FileOutputStream("file.dat", true);
      PrintWriter pw           = new PrintWriter( ostream );

      for ( int i=NUMBER+1; i<=NUMBER*2; i++ )
      {
        pw.print( " " ); pw.print( i );
      }
      pw.flush();
      ostream.close();
    }
    catch ( IOException e )
    {
      System.out.println("IOException : " + e.getMessage() );
    }
  }


  // Text O INPUT 

  public static void main6()
  {
    try
    {
      FileInputStream ostream = new FileInputStream("file.dat");
      BufferedInputStream bis = new BufferedInputStream( ostream );


      int c = bis.read();
      while ( c != -1 )
      {
         System.out.print( (char) c );
         c = bis.read();
      }

      bis.close();
      System.out.println();
    }
    catch ( IOException e )
    {
      System.out.println("IOException : " + e.getMessage() );
    }
  }

/*
import java.io.IOException;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
*/
  public static void main7( String args[] )
  {
    for ( int i=0; i<args.length; i++ )
    {
      try
      {
        FileInputStream fis = new FileInputStream( args[i] );
        try
        {
          int c;
          while ( ( c = fis.read() ) != -1 )
          {
            System.out.print( (char) c );
          }
          fis.close();
          System.out.println();
        }
        catch ( IOException name )
        {
           System.err.println( "Error reading from : " + args[i] );
        }
      }
      catch ( FileNotFoundException e )
      {
        System.err.println( "Can not open : " + args[i] );
      }
    }
  }

/*
import java.io.StringInputStream;
*/


  public static void main8()
  {
    try
    {
      String data = "First line\nSecond line\nThird line";
      StringReader sr   = new StringReader( data );

      int c = sr.read();
      while ( c != -1 )
      {
         System.out.print( (char) c );
         c = sr.read();
      }

      System.out.println();
    }
    catch ( IOException e )
    {
      System.out.println("IOException : " + e.getMessage() );
    }
  }

  //Using the PrintWriter class 

  // FileDescriptor  .out .in .err 

  public static void main9()
  {
    FileOutputStream fos = new FileOutputStream( FileDescriptor.out );
    PrintWriter      pw  = new PrintWriter( fos );

    pw.print("Writing string : "); pw.println( "text" );
    pw.print("Writing int    : "); pw.println( 42 );
    pw.print("Writing float  : "); pw.println( 3.14f );
    pw.flush();                                          // Must have 

  }

  // Using the PrintWriter class with auto flush 

  public static void main10()
  {
    FileOutputStream fos = new FileOutputStream( FileDescriptor.out );
    PrintWriter      pw  = new PrintWriter( fos, true );

    pw.print("Writing string : "); pw.println( "text" );
    pw.print("Writing int    : "); pw.println( 42 );
    pw.print("Writing float  : "); pw.println( 3.14f );

  }

}