public class Person implements Serializable { private String name; private int age; private static final long serialVersionUID = 1L; public Person(String name, int age) { this.name = name; this.age = age; } public static void main(String[] args) throws FileNotFoundException, IOException{ Person michael = new Person("Michael", 26); Person peter = new Person("Peter", 37); FileOutputStream fileOutputStream = new FileOutputStream("persons.txt"); ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream); objectOutputStream.writeObject(michael); objectOutputStream.writeObject(peter); } }