Foo.java

// Serializable subclass of nonserializable stateful class - Pages 293-294
package org.effectivejava.examples.chapter11.item74;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

public class Foo extends AbstractFoo implements Serializable {
	private void readObject(ObjectInputStream s) throws IOException,
			ClassNotFoundException {
		s.defaultReadObject();

		// Manually deserialize and initialize superclass state
		int x = s.readInt();
		int y = s.readInt();
		initialize(x, y);
	}

	private void writeObject(ObjectOutputStream s) throws IOException {
		s.defaultWriteObject();

		// Manually serialize superclass state
		s.writeInt(getX());
		s.writeInt(getY());
	}

	// Constructor does not use the fancy mechanism
	public Foo(int x, int y) {
		super(x, y);
	}

	private static final long serialVersionUID = 1856835860954L;
}