import java.io.*;
class ObjectToSave implements Serializable {
   static final long serialVersionUID = 7482918152381158178L;
   private int i;
   private String s;
   private transient double d;
   public ObjectToSave( int i, String s, double d ) {
      this.i = i;
      this.s = s;
      this.d = d;
   }
   public String toString() {
      return "i = " + i + ", s = " + s + ", d = " + d;
   }
   private void readObject( ObjectInputStream ois )
         throws ClassNotFoundException, IOException {
      System.out.println( "deserializing..." );
      ois.defaultReadObject();
      System.out.println( "deserialized" );
   }
   private void writeObject( ObjectOutputStream oos )
         throws IOException {
      System.out.println( "serializing..." );
      oos.defaultWriteObject();
      System.out.println( "serialized" );
   }
}
public class ObjectSaver {
   private static final String FILE_NAME = "objects.ser";
   public static void main( String[] args ) {
      try {
         ObjectToSave ots = new ObjectToSave( 57, "pizza", 3.14 );
         File objectFile = new File( FILE_NAME );
         if ( objectFile.exists() ) {
            objectFile.delete();
         }
         FileOutputStream fos = new FileOutputStream( objectFile );
         ObjectOutputStream oos = new ObjectOutputStream( fos );
         oos.writeObject( ots );
         oos.close();
         FileInputStream fis = new FileInputStream( objectFile );
         ObjectInputStream ois = new ObjectInputStream( fis );
         ObjectToSave retrieved = (ObjectToSave) ois.readObject();
         ois.close();
         System.out.println( retrieved );
      }
      catch ( OptionalDataException x ) {
         System.out.println( x );
         x.printStackTrace();
      }
      catch ( ClassNotFoundException x ) {
         System.out.println( x );
         x.printStackTrace();
      }
      catch ( IOException x ) {
         System.out.println( x );
         x.printStackTrace();
      }
   }
}