[
https://issues.apache.org/jira/browse/OPENNLP-742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Joern Kottmann closed OPENNLP-742.
----------------------------------
Resolution: Won't Fix
As of 1.7.0 models can be serialized.
> Adding serialVersionUID to POSModel Class
> -----------------------------------------
>
> Key: OPENNLP-742
> URL: https://issues.apache.org/jira/browse/OPENNLP-742
> Project: OpenNLP
> Issue Type: Improvement
> Components: POS Tagger
> Affects Versions: 1.6.0
> Environment: Mac OS X 10.9.5
> Reporter: Nishant Kelkar
>
> I had a custom POSModel that I serialized and store as a .bin file using Java
> 1.7. Now, I want to deserialize and use it in a POSTaggerME using Java 1.6.
> However, I get the following error at the point that I read in the binary
> file:
> java.lang.UnsupportedClassVersionError: opennlp/tools/postag/POSModel :
> Unsupported major.minor version 51.0
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
> at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> According to the following StackOverflow post, it should be possible to
> resolve this by manually assigning a serialVersionUID to the POSModel class
> (which is what I call the serialize() method on):
> http://stackoverflow.com/questions/893433/does-using-compilers-from-different-jdk-versions-on-the-same-source-file-break
> I'm using the following dependency:
> <dependency>
> <groupId>org.apache.opennlp</groupId>
> <artifactId>opennlp-tools</artifactId>
> <version>1.6.0-SNAPSHOT</version>
> </dependency>
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
