Trouble accessing fields of a serialized object in Java
- by typoknig
I have instantized a class that implements Serializable and I am trying to stream that object like this:
try{
Socket socket = new Socket("localhost", 8000);
ObjectOutputStream toServer = new ObjectOutputStream(socket.getOutputStream());
toServer.writeObject(myObject);
} catch (IOException ex) {
System.err.println(ex);
}
All good so far right? Then I am trying to read the fields of that object like this:
//This is an inner class
class HandleClient implements Runnable{
private ObjectInputStream fromClient;
private Socket socket; // This socket was established earlier
try {
fromClient = new ObjectInputStream(socket.getInputStream());
GetField inputObjectFields = fromClient.readFields();
double myFristVariable = inputObjectFields.get("myFirstVariable", 0);
int mySecondVariable = inputObjectFields.get("mySecondVariable", 0);
//do stuff
} catch (IOException ex) {
System.err.println(ex);
} catch (ClassNotFoundException ex) {
System.err.println(ex);
} finally {
try {
fromClient.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
But I always get the error:
java.io.NotActiveException: not in call to readObject
This is my first time streaming objects instead of primitive data types, what am I doing wrong?
BONUS
When I do get this working correctly, is the ENTIRE CLASS passed with the serialized object (i.e. will I have access to the methods of the object's class)? My reading suggests that the entire class is passed with the object, but I have been unable to use the objects methods thus far. How exactly do I call on the object's methods?
In addition to my code above I also experimented with the readObject method, but I was probably using it wrong too because I couldn't get it to work. Please enlighten me.
