/** A TVScheduleWriter is an object that provides its user with an interface for writing
the data contained in TVSchedule objects into a text file. The writer writes schedule 
objects in a file sequentially as its method write is called.

In the text files created by the writer, each "program broadcasting unit" (e.g. a day) 
is represented by a number of lines. The first two lines contain the name and 
broadcasting time of the program schedule, and the following lines contain the titles 
and durations of the individual TV programs, in broadcasting order. There may be an arbitrary 
number of programs in each broadcasting unit; the end of a unit is marked in the 
file by a line consisting of three hyphenation marks. E.g. 
*/
 
 
 
import java.io.*;
 
public class TVScheduleFileWriter extends Object {
 
  public static final String SEPARATOR_LINE = "---";
  private Writer characterStream;
  private BufferedWriter bufferedStream;
 
        public TVScheduleFileWriter(String filepath)
                               throws IOException {
          try {
          Writer characterStream = new FileWriter(filepath);
          BufferedWriter bufferedStream = new BufferedWriter(characterStream);
          } catch (Exception e){
          throw new IOException("wrong");
          }
 
        }
 
 
/**
Writes (into the file) the data for one "broadcasting unit" (e.g. a day). The given data is appended after 
the data written when this method was last called.
Parameters:
schedule - the program schedule data to be stored in 
the file
Throws:
IOException - if problems arose when handling the file

*/
        public void write(TVSchedule schedule) throws IOException {
          try {
            bufferedStream.write(schedule);
            bufferedStream.newLine();
          } catch (Exception e) {
            throw new IOException("wrong");
          }
 
        }
 
 
        public void close() throws IOException {
          try {
          bufferedStream.close();
          characterStream.close();
          } catch (Exception e) {
            throw new IOException("wrong")
          }
        }
 
}
 

TVSchedule aTVSchedule = ...;
FileOutputStream fos = new FileOutputStream("tv.ser");
ObjectOutputStream ostream = new ObjectOutputStream(fos); 
ostream.writeObject(aTVSchedule);

public void write(TVSchedule schedule) throws IOException 
{
	try 
	{		
		StringBuffer buffer = new StringBuffer();
		buffer.append("Channel: ");
		buffer.append(schedule.getChannel());
		buffer.append("Programs:");
		buffer.append("\n");
		
		TVProgramInfo info[] = channel.getPrograms();
		for(int i=0; i<info.length;)
		{
			buffer.append(info[i].getName());
			buffer.append("\n");
		}
		
		//...and then, pass this String to
		// the write method...
		bufferedStream.write(buffer.toString(), 0, buffer.length());
		bufferedStream.newLine();
		
		// ...how about if we flushed?
		bufferedStream.flush();
	}
	catch (Exception e) 
	{
		throw new IOException("wrong");
	}
}