import java.io.*;
import java.util.*;

public class SerializationTest
{

	public static void main(String[] args) throws IOException
	{
		if(args.length>0)
		{
			if("read".equals(args[0]))
			{
				read();
				return;
			}
			if("write".equals(args[0]))
			{
				write();
				return;
			}
		}
		System.out.println("Use either \"read\" or \"write\" as argument.");
		System.out.println("Delete SerializationTest$Foobar.class before \"read\" to test deserialization in absence of class.");
	}
	
	public static final String FILENAME="test.ser";
	
	public static void write() throws IOException
	{
		File file=new File(FILENAME);
		System.out.println("Writing file "+file.getAbsolutePath());
		FileOutputStream fos=new FileOutputStream(file);
		ObjectOutputStream oos=new ObjectOutputStream(fos);
		
		Serializable[] objects=new Serializable[]{
			"Foo",
			new Foobar("The same string"),
			"The same string"
		};
		
		for(Serializable current:objects)
		{
			oos.writeObject(current);
		}
		oos.close();
	}
	
	public static void read() throws IOException
	{
		File file=new File(FILENAME);
		System.out.println("Reading file "+file.getAbsolutePath());
		FileInputStream fis=new FileInputStream(file);
		ObjectInputStream ois=new ObjectInputStream(fis);
		
		List read=new ArrayList();
		
		for(;;)
		{
			try
			{
				Object obj=ois.readObject();
				read.add(obj);
			}
			catch(ClassNotFoundException ex)
			{
				ex.printStackTrace();
				read.add(null);
			}
			catch(EOFException ex)
			{
				System.out.println(ex);
				break;
			}
		}
		System.out.println(read);
		ois.close();
	}

	public static class Foobar
		implements Serializable
	{
		private String string;
		
		public Foobar()
		{
			this(null);
		}
		
		public Foobar(String string)
		{
			this.string=string;
		}
		
		public String toString()
		{
			return "Foobar[string="+string+"]";
		}
	}

}