Exception in thread "main" java.lang.RuntimeException: Could not get JCR session
	at com.mycompany.jcr_example.JcrUtility.createSession(JcrUtility.java:52)
	at com.mycompany.jcr_example.JcrUtility.create(JcrUtility.java:62)
	at com.mycompany.jcr_example.JcrOperation.main(JcrOperation.java:17)
Caused by: javax.jcr.RepositoryException: Cannot instantiate persistence manager org.apache.jackrabbit.core.persistence.pool.MySqlPersistenceManager
	at org.apache.jackrabbit.core.RepositoryImpl.createPersistenceManager(RepositoryImpl.java:1379)
	at org.apache.jackrabbit.core.RepositoryImpl.access$200(RepositoryImpl.java:126)
	at org.apache.jackrabbit.core.RepositoryImpl$WorkspaceInfo.doInitialize(RepositoryImpl.java:2052)
	at org.apache.jackrabbit.core.RepositoryImpl$WorkspaceInfo.initialize(RepositoryImpl.java:2035)
	at org.apache.jackrabbit.core.RepositoryImpl.initStartupWorkspaces(RepositoryImpl.java:543)
	at org.apache.jackrabbit.core.RepositoryImpl.<init>(RepositoryImpl.java:326)
	at org.apache.jackrabbit.core.RepositoryImpl.create(RepositoryImpl.java:615)
	at org.apache.jackrabbit.core.TransientRepository$3.getRepository(TransientRepository.java:250)
	at org.apache.jackrabbit.core.TransientRepository.startRepository(TransientRepository.java:280)
	at org.apache.jackrabbit.core.TransientRepository.login(TransientRepository.java:376)
	at org.apache.jackrabbit.commons.AbstractRepository.login(AbstractRepository.java:144)
	at com.mycompany.jcr_example.JcrUtility.createSession(JcrUtility.java:46)
	... 2 more
Caused by: java.lang.NullPointerException
	at org.apache.jackrabbit.core.cache.ConcurrentCache.getSegment(ConcurrentCache.java:98)
	at org.apache.jackrabbit.core.cache.ConcurrentCache.get(ConcurrentCache.java:124)
	at org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.getBundle(AbstractBundlePersistenceManager.java:741)
	at org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.exists(AbstractBundlePersistenceManager.java:563)
	at org.apache.jackrabbit.core.persistence.bundle.ConsistencyCheckerImpl.internalCheckConsistency(ConsistencyCheckerImpl.java:246)
	at org.apache.jackrabbit.core.persistence.bundle.ConsistencyCheckerImpl.check(ConsistencyCheckerImpl.java:99)
	at org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.checkConsistency(AbstractBundlePersistenceManager.java:822)
	at org.apache.jackrabbit.core.persistence.pool.BundleDbPersistenceManager.init(BundleDbPersistenceManager.java:562)
	at org.apache.jackrabbit.core.persistence.pool.MySqlPersistenceManager.init(MySqlPersistenceManager.java:51)
	at org.apache.jackrabbit.core.RepositoryImpl.createPersistenceManager(RepositoryImpl.java:1375)