error: local class incompatible: stream classdec serialversionUID= ...., local class serialversionUID=

Question

I have a serializable java class and when I add either of the following methods. I get this error

" local class incompatible: stream classdec serialversionUID= ...., local class serialversionUID=..."

added methods:

public HashMap<Long, BookIndex> getBookIndexMap() {
    return bookIndexMap;
}

public String getDataFileName() {
    return dataFileName;
}

what is causing this and how can I correct it?

Add `static long serialVersionUID = ..;` to the class, with the value as shown for the stream classdesc. — user207421, Aug 16 '23 at 23:57

score -1 · Answer 1 · edited Jun 06 '17 at 18:58

-1

I solved it by doing the following:

Working in Eclipse Neon.

On Tomcat Server

Clean Tomcat Work Directory...
Clean... (to do something, just in case)

then

Project

'Clean...' select your project and click 'Ok'

edited Jun 06 '17 at 18:58

Paul Roub

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answered Jun 06 '17 at 18:51

PROCSIS Consultora

1

That wouldn't take care of existing serializations, such as to files or databases. This is not the correct solution. – user207421 Aug 16 '23 at 23:56

score -1 · Accepted Answer · edited Aug 16 '23 at 22:27

-1

This article may be helpful, by changing the class's method signatures, previous serialized forms are incompatible unless the classes have the same serialVersionUID.

edited Aug 16 '23 at 22:27

Henry Ecker

34,399
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answered Dec 27 '11 at 03:28

j128

58
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The Object Serialization Specification would be a lot more helpful, as it is a normative specification, not just some arbitrary third-party Internet junk. – user207421 Aug 16 '23 at 23:55

score -1 · Answer 3 · edited May 23 '17 at 12:24

-1

Even Though the serialVersionUID is same, some changes are incompatible to sync with the previous serialized form.

link is here

edited May 23 '17 at 12:24

Community

1
1

answered Dec 27 '11 at 03:56

Rajkumar Palani

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Those incompatibilities do not cause this error. Answer is irrelevant. – user207421 Aug 16 '23 at 23:56

error: local class incompatible: stream classdec serialversionUID= ...., local class serialversionUID=

3 Answers3

On Tomcat Server

Project

Linked