Transaction-isolation.java

Transaction Isolation levels:
Voilations:

Dirty Reads - A updates,B reads, A rollbacks
Non-Repeatable Reads - A reads, B Updates, A reads found 2 records for same.
Phantom Reads - A reads with where critaria, B insert new record which falls in that where critaria, A reads records with same.

TRANSACTION_READ_UNCOMMITTED
TRANSACTION_READ_COMMITTED
TRANSACTION_REPEATABLE_READ
TRANSACTION_SERIALIZABLE