linghengqian commented on issue #30926:
URL: 
https://github.com/apache/shardingsphere/issues/30926#issuecomment-2239523414

   - 
`org.apache.shardingsphere.mode.repository.standalone.jdbc.JDBCRepositoryTest` 
also surprised me when mocking the in-memory database h2database. 
   - At the same time, Embedded Derby also creates a lot of local files. I'm 
considering delaying providing unit tests for Derby due to the immutability of 
the relevant directory paths. PR is still in preparation.
   ```bash
   java.lang.UnsupportedClassVersionError: org/apache/derby/jdbc/EmbeddedDriver 
has been compiled by a more recent version of the Java Runtime (class file 
version 63.0), this version of the Java Runtime only recognizes class file 
versions up to 61.0
   
        at java.base/java.lang.ClassLoader.defineClass1(Native Method)
        at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
        at 
java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
        at 
java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
        at 
java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
        at 
java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
        at 
java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
        at 
java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
        at 
com.zaxxer.hikari.HikariConfig.attemptFromContextLoader(HikariConfig.java:973)
        at 
com.zaxxer.hikari.HikariConfig.setDriverClassName(HikariConfig.java:483)
        at com.lingh.DatabaseTest.test(DatabaseTest.java:16)
        at java.base/java.lang.reflect.Method.invoke(Method.java:568)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
   ```


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