9- For this code: import java.io. *; public class TestMid20 ( public static void main(String[] args) throws IOException { try (ObjectOutputStream output= new ObjectOutputStream(new...

Output??

Extracted text: 9- For this code: import java.io. *; public class TestMid20 ( public static void main(String[] args) throws IOException { try (ObjectOutputStream output= new ObjectOutputStream(new FileOutputStream("object.dat"));) { output.writeObject(new A201(); class A201 implements Serializable { Bb-new B(); class B {