Serializable

import java.io.*;

public class Serial implements Serializable {
        
    public Serial() {
    }
    
    public static void main(String[] args) throws Exception {
        Serial s = new Serial();
        
        //Escreve o objeto para o arquivo
        ObjectOutputStream output = 
            new ObjectOutputStream(new FileOutputStream("serial.sel"));
        output.writeObject(s);
        output.flush();
        
        // Le o objeto a partir do arquivo
        ObjectInputStream input = 
            new ObjectInputStream(new FileInputStream("serial.sel"));
        Serial sInput = (Serial)input.readObject();
    }
    
}