To determine the result of the given code, let's go through each step:
- The
CardPlayer
class extends the Player
class and implements the Serializable
interface.
- In the
main
method, a new CardPlayer
object c1
is created, which invokes the default constructor of CardPlayer
.
- The code then tries to write the
c1
object to a file named "play.txt". This is done using FileOutputStream
and ObjectOutputStream
.
- After writing the object to the file, the code tries to read the object from the file. This is done using
FileInputStream
and ObjectInputStream
.
- The object read from the file is assigned to a new
CardPlayer
object c2
.
- Finally, the code closes the input and output streams.
Now let's analyze the output:
- The
Player
class has a default constructor that prints "p" when called.
- The
CardPlayer
class has a default constructor that prints "c" when called.
Based on the code execution:
- When the
CardPlayer
object c1
is created, the output is "c".
- When the
c1
object is written to the file, the output is not printed.
- When the
c1
object is read from the file and assigned to c2
, the output is "p".
- Since the output statement is within the
Player
class constructor, it is not executed during object serialization and deserialization.
Therefore, the correct answer is option C: "pcp".