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

public class Save3Objects {

//-------------------------------------------------------------------
// main() entry point
//-------------------------------------------------------------------
public static void main (String[] args) {
Object anObject;
FileOutputStream file;
ObjectOutputStream freezer = null;

	// create serialization stream "sermech.ser"
	try {
		file	= new FileOutputStream("sermech.ser");
		freezer = new ObjectOutputStream(file);
	} catch (IOException noIO) {
		System.out.println("IO error occurred: " + noIO);
		System.exit(10);
	}

	// create first test object, type Point, and serialize it.
	anObject = new Point(10,20);
	serializeObject(anObject, freezer);

	// create second test object, of different type Date, and serialize it.
	anObject = new Date();
	serializeObject(anObject, freezer);

	// create third test object, type Point again, and serialize it.
	anObject = new Point(255,254);
	serializeObject(anObject, freezer);

	// terminate serialization stream.
	try {
		freezer.close();
	} catch (IOException notClosed) {
		System.out.println("Could not close serialization stream !");
	}
}
//-------------------------------------------------------------------
// utility function to serialize a single object (hiding try-catch)
//-------------------------------------------------------------------
protected static void serializeObject(Object x, ObjectOutputStream serStream) {
	try {
		serStream.writeObject( x );
	} catch (IOException noIO) {
		System.out.println("Serialization IO error occurred: " + noIO);
		System.exit(100);
	}
}
} // End of Class Save3Objects