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December 2001

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This page contains an archived post to the Java Answers Forum made prior to February 25, 2002. If you wish to participate in discussions, please visit the new Artima Forums.

Message:

Type code out of range, is -84

Posted by Senthoor on December 08, 2001 at 10:30 PM

import java.io.*;

class test implements java.io.Serializable
{
public String x = null;
public int i = 0;

public test(String y, int x)
{
this.x = y;
this.i = x;
}
}

public class FileIO {

public FileIO() {
}
public static void main(String[] args) {

try
{
// writing to the file
FileOutputStream fo = new FileOutputStream("x.dat");
ObjectOutputStream oo = new ObjectOutputStream(fo);

test x = new test("Senthoor",5);
oo.writeObject(x);
oo.flush();
oo.close();
fo.close();


// writing again to the file
fo = new FileOutputStream("x.dat", true);
oo = new ObjectOutputStream(fo);

test y = new test("Luxman",10);
oo.writeObject(y);
oo.flush();
oo.close();
fo.close();


//reading from the file

FileInputStream fi = new FileInputStream("x.dat");
ObjectInputStream oi = new ObjectInputStream(fi);
oi.readObject();
test z = (test)oi.readObject();
System.out.println("String : " + z.x);
System.out.print("int : " + z.i);
fi.close();
}
catch(Exception e)
{
System.out.println("ERROR : " + e.toString());
}
}
}

Whats wrong with this code... I am getting Type code out of range, is -84 when I execute this code. I can write objects for the first time and close the stream and read them back. However when I open the file in append mode and add some more objects and try to read them I am getting Type code out of range, is -84... Please help me...

Senthoor



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