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  1. JDK
  2. JDK-6240271

Deserializing an object with a new field throws java.io.StreamCorruptedException

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    • Bug
    • Status: Closed
    • P3
    • Resolution: Won't Fix
    • 6, 6u23
    • None
    • core-libs

    Description

      After serializing an object on 1.6 with the code (WriteTest.java, attached), deserializing the object with the code (ReadTest.java, also attached) on the prior releases (say 1.4.1) will throw the following exception:

      java.io.StreamCorruptedException
              at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1301)
              at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)
              at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)
              at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
              at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
              at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
              at ReadTest.<init>(ReadTest.java:13)
              at ReadTest.main(ReadTest.java:6)

      According to the serialization specification, adding a field is a compatible change:
      http://java.sun.com/j2se/1.5.0/docs/guide/serialization/spec/version.html#6519

      That the new field uses a class that's not known to an old JRE, RoundingMode in this case, shouldn't matter because deserialization should just skip over the data for the unknown field.
      ###@###.### 2005-03-14 19:14:33 GMT
      ###@###.### 2005-03-14 19:16:54 GMT

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              Unassigned Unassigned
              naoto Naoto Sato
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