Name: avC70361 Date: 06/15/98



  The java.sql.Date is incorrectly deserialized in jdk1.2beta4 when has been
serialized in jdk1.1.6. The instance deserialized is not equal to the instance
created for the same date.

Here is a test demonstrating the bug.
----------SQLDateTest.java-------------
import java.sql.Date;
import java.io.*;

public class SQLDateTest {

  public static void main(String args[]) {

    Date expected = new Date(123456789L);

    if (args[0].equals("write")) {

      ObjectOutputStream stream = null;

      try {

        stream = new ObjectOutputStream(new FileOutputStream(args[1]));
        stream.writeObject(expected);
        stream.close();

      } catch(IOException e) {
        System.out.println("Couldn't write to " + args[1] + " : " + e);
        System.exit(1);
      }

      System.out.println(args[1] + " written successfully");

    } else if (args[0].equals("read")) {

      ObjectInputStream stream = null;

      try {

        stream = new ObjectInputStream(new FileInputStream(args[1]));
        Date date = (Date)stream.readObject();

        if (!expected.equals(date)) {
          System.out.println(
            "Deserialized date is not equal to expected\n" +
            "deserialized date = " + date + "\n" +
            "expected date = " + expected
          );
          System.exit(1);
        }
      } catch(InvalidClassException e) {
        System.out.println("Failed:" + e);
        System.exit(1);
      } catch(Exception e) {
        System.out.println(
          "Failed: couldn't read from " + args[1] + " : " + e
        );
        System.exit(1);
      }

      System.out.println("Passed");

    }

    System.exit(0);

  }

}
-----------The test output---------
Under jdk1.1.6:
<avv@stardust(pts/3).314> java -version
java version "1.1.6"
<avv@stardust(pts/3).315> java SQLDateTest write file.ser
file.ser written successfully
<avv@stardust(pts/3).316> java SQLDateTest read file.ser
Passed

Under jdk1.2beta4:
<avv@stardust(pts/3).320> java -version
java version "1.2beta4"
Classic VM (build JDK-1.2beta4-I, green threads, sunwjit)
<avv@stardust(pts/3).321> java SQLDateTest read file.ser
Deserialized date is not equal to expected
deserialized date = 1970-01-03
expected date = 1970-01-02

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