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Serializayion problem please help

Rahul Shivsharan
Ranch Hand

Joined: Jun 17, 2009
Posts: 83
The code below has Student.java which is serializable, it also has Department's getter setter . Department.java is not serializable . But when i run the main method in EX01.java, i get Exception as Department.java is not serializable . So in Student.java i made the Department transient, now when i run the main method in Ex01.java, for Department is null while printing object Student . So i inserted writeObject and readObject method in student.java. But still i am getting Department null , please help


My Question is how to get the department values from Object Student.java when Student.java is serialized and Department.java is not serialized


The POJO below is of Student.java




the code below is Department.java



The code below is Ex01.java where main method



Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 38756
    
  23
The transient keyword is intended for use for fields which can be re-entered, the classic example being a password. You don't serialise the password, but enter it again when the object is reconstructed.
If you want a reference to the department the student is in, you would have to serialise the Department object too, so I think the Department class would have to implement Serializable.
Muhammad Khojaye
Ranch Hand

Joined: Apr 12, 2009
Posts: 449

Check XStream, as this library can be use for doing Java to XML serialization for any object no matter if it is Serializable or not.


http://muhammadkhojaye.blogspot.com/
Muhammad Khojaye
Ranch Hand

Joined: Apr 12, 2009
Posts: 449

Replace line 78 of student class with and i have got department values.
Rahul Shivsharan
Ranch Hand

Joined: Jun 17, 2009
Posts: 83
Thanks mohammad , it really helped
 
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subject: Serializayion problem please help