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Brian Maimone
Courses Plus Student 1,644 PointsWhat to do if my Treats class is not serializable?
The error message:
Problem saving Treats
java.io.NotSerializableException: com.teamtreehouse.Treat
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStr
eam.java:1184)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStrea
m.java:1378)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStr
eam.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStre
am.java:348)
at com.teamtreehouse.Treats.save(Treats.java:10)
at Example.main(Example.java:25)
My code:
package com.teamtreehouse;
import java.io.*;
public class Treats { public static void save(Treat[] treats) { try ( FileOutputStream fos = new FileOutputStream("treats.ser");//open a new file, param is file name ObjectOutputStream oos = new ObjectOutputStream(fos);//to serialize array, param is string ) { oos.writeObject(treats);//oos provides a way to take representation in memory and write out its binary representation using a method called write object } catch(IOException ioe) { System.out.println("Problem saving Treats"); ioe.printStackTrace(); } }
}
4 Answers
Ryan Ruscett
23,309 Pointsimport java.io.Serializable
in your class declaration. public class Treats implements Serializable {
That tells the compiler that your class is serializable.
Ryan Ruscett
23,309 PointsYour class must implement serialize interface. on the class you want to save. In this instance treet or else treet can't be deflated so to speak.
Brian Maimone
Courses Plus Student 1,644 PointsHow then do I make the Treat class serializable, if I understand correctly?
Brian Maimone
Courses Plus Student 1,644 PointsThanks Ryan.
amathiaitishar
13,229 Pointsamathiaitishar
13,229 PointsThere are two classes Treet and Treets in this example.
Treet is serializable by importing the interface:
import java.io.Serializable;
and
in the class declaration you add after Comparable, [Serializable].
Hope that helps, Amathia