Name: avC70361 Date: 02/11/98



  The java.text.MessageFormat serialization/deserialization process is
incorrectly perfomed. Instances before and after serialization are not equal.

Here is the test demonstrating the bug
-------------MessageFormatTest1.java--------------
import java.text.MessageFormat;
import java.io.IOException;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class MessageFormatTest1 {

  public static void main(String args[]) {
    MessageFormat format1 = null;
    MessageFormat format2 = null;

    ObjectOutputStream ostream = null;
    ByteArrayOutputStream baos = null;
    ObjectInputStream istream = null;

    try {

      ostream = new ObjectOutputStream(
        baos = new ByteArrayOutputStream()
      );

    } catch(IOException e) {
      System.out.println("Unexpected exception : " + e);
      System.exit(1);
    }

    try {

      format1 = new MessageFormat("pattern{0}");

      ostream.writeObject(format1);
      ostream.flush();

      byte bytes[] = baos.toByteArray();

      istream = new ObjectInputStream(new ByteArrayInputStream(bytes));
      format2 = (MessageFormat)istream.readObject();

    } catch(Exception e) {
      System.out.println("Unexpected exception : " + e);
    }

    if (!format1.equals(format2)) {
      System.out.println("MessageFormats before and after serialization are not equal\nformat1 = " + format1 + "(" + format1.toPattern() + ")\nformat2 = " + format2 + "(" + format2.toPattern() + ")");
    } else {
      System.out.println("OK");
    }
  }

}
------The test output--------
> java MessageFormatTest1
MessageFormats before and after serialization are not equal
format1 = java.text.MessageFormat@d0d8eb90(pattern{0})
format2 = java.text.MessageFormat@d0d8eb90(pattern{0})

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