[jira] [Created] (TAP5-2786) Attempt to override final method in subclass when in multiple classloader mode

[Thiago Henrique De Paula Figueiredo (Jira)]

Thiago Henrique De Paula Figueiredo created TAP5-2786:
---------------------------------------------------------

             Summary: Attempt to override final method in subclass when in 
multiple classloader mode
                 Key: TAP5-2786
                 URL: https://issues.apache.org/jira/browse/TAP5-2786
             Project: Tapestry 5
          Issue Type: Bug
          Components: tapestry-core
    Affects Versions: 5.8.7
            Reporter: Thiago Henrique De Paula Figueiredo


With this code:

Select.java
{code:java}
@Cached(watch = "clientId")
protected final List<?> getList() {
    return createList();
}
protected List<?> createList() {
    return list_;
}{code}
SelectDigest.java
{code:java}
public class SelectDigest extends Select {
    @Override
    protected List<?> createList() {
        ....
    }
}{code}
This exception happens:
java.lang.IncompatibleClassChangeError
*class root_package.components.SelectDigest overrides final method 
root_package.components.Select.getList()Ljava/util/List;*
 
If I remove the {{final}} modifier from the superclass' {{getList()}} method, 
the problem doesn't work.
 



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