Re: Serialization of ArrayList resulting in Null Values

scifluent@gmail.com wrote:


Serialisation of ArrayLists should work...

But you haven't given enough information to know what you are doing
wrong. Start with something simple that works, and work back to find
where your problem is introduced.

Here is some working *complete* code to start from:

import java.io.*;
import java.util.*;
class Write {
     public static void main(String[] args) throws Exception {
         List<Float> data = new ArrayList<Float>(
             Arrays.asList(1.0f, 2.0f, 3.0f)
         );
         ObjectOutputStream out = new ObjectOutputStream(
             new FileOutputStream("data.ser")
         );
         out.writeObject(data);
         out.close();
     }
}

import java.io.*;
import java.util.*;
class Read {
     public static void main(String[] args) throws Exception {
         ObjectInputStream in = new ObjectInputStream(
             new FileInputStream("data.ser")
         );
         List<Float> data = (List<Float>)in.readObject();
         System.out.println(data);
     }
}

Tom Hawtin