Serialization Puzzle

SerializationPuzzle

import org.springframework.util.SerializationUtils;

import java.io.Serializable;

public class SerializationPuzzle {
    public static void main(String[] args) {
        B deserialized = (B) SerializationUtils.deserialize(
                SerializationUtils.serialize(new B("alma")));
        System.out.println(deserialized.getText());
    }

    public static class A {
        private final String text;

        public A(String text) {
            this.text = text;
        }

        public String getText() {
            return text;
        }
    }

    public static class B extends A implements Serializable {
        public B(String text) {
            super(text);
        }
    }
}