Summary

KeyStoreException is not thrown by KeyStoreSpi::engineGetAttributes but the specification claims it could. The @throws line should be removed.

Problem

The method specification is wrong that a KeyStoreException could be thrown, but it shouldn't. The line was copied from KeyStore::getAttributes but the check is already done inside that method and thus the keystore is guaranteed to have been initialized in this method.

Solution

Remove the @throws line.

Specification

In src/java.base/share/classes/java/security/KeyStore.java:

     /*
      ....
-     * @throws KeyStoreException if the keystore has not been initialized
-     * (loaded).
-     *
      * @since 18
      */
     public Set<Entry.Attribute> engineGetAttributes(String alias);