Name: skT45625 Date: 05/12/2000


java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

Problem:
Transient fields of URL are not correctly restored during readObject.

Create a URL
Serialize it
Read serialized version back.
getPath returns null.

Source code:-------------------------------------------------------------------

package urlbug;

import java.net.*;
import java.io.*;

public class Test
{
   public static void main( String[] argsest ) throws Exception
   {
      URL originalUrl = new URL( "file:/t:/line1.jpg" );
      ByteArrayOutputStream out = new ByteArrayOutputStream();
      ObjectOutputStream oos = new ObjectOutputStream( out );

      oos.writeObject( originalUrl );
      oos.close();

      ByteArrayInputStream in = new ByteArrayInputStream(
out.toByteArray() );
      ObjectInputStream ois = new ObjectInputStream( in );
      URL restoredUrl = (URL)ois.readObject();
      ois.close();

      System.out.println( originalUrl.getPath() );
      System.out.println( restoredUrl.getPath() );
   }
}
(Review ID: 104795)
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Name: skT45625 Date: 08/07/2000


java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

Deserialized file URL's return a null value for getPath (). Not sure if other
values are incorrect. Running the attached code produces incorrect output:

  initial URL getPath () = /tmp/dir1/dir2/dummy.txt
  serialized URL getPath () = null

-------------------------------------------------------------

import java.io.*;
import java.net.*;

public class UrlBug
{
  public static void main (String [] args)
  {
    try
    {
      // create a bogus file URL and serialize it
      URL url = new URL ("file:///tmp/dir1/dir2/dummy.txt");

      FileOutputStream fileOutStream = new FileOutputStream ("url.ser");
      ObjectOutputStream objectOutStream = new ObjectOutputStream
(fileOutStream);

      objectOutStream.writeObject (url);

      objectOutStream.close ();
      fileOutStream.close ();

      // deserialize URL from file and store in url2
      FileInputStream fileInStream = new FileInputStream ("url.ser");
      ObjectInputStream objectInStream = new ObjectInputStream (fileInStream);

      URL url2 = (URL)objectInStream.readObject ();

      objectInStream.close ();
      fileInStream.close ();

      // print the before and after values of getPath ()
      System.out.println ("initial URL getPath () = " + url.getPath ());
      System.out.println ("serialized URL getPath () = " + url2.getPath ());

    } catch (FileNotFoundException ex)
    {
      ex.printStackTrace ();
    } catch (IOException ex)
    {
      ex.printStackTrace ();
    } catch (ClassNotFoundException ex)
    {
      ex.printStackTrace ();
    }
  }
}
(Review ID: 108052)
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