How can i execute multiple database operations using multiple objects

i have data in files which i need to read/parse and insert/update the database. can someone tell me how can i read multiple statements at a time and process using multiple objects.

This doesn't seem like too much of a JDBC question or at least the answer as I see it isn't unique or specific to JDBC.
If you want to run multiple processes within your single program then you need to use Java threads. I would recommend you read up on how to properly code Java threads and if you have questions unique to your multi-threaded JDBC implementation come back and ask those questions.
You may also want tot take advantage of a transaction manager that includes a database connection pool that will handle most of the complexity for you. Depending on the flexibility of your architecture you may not have to do any thread coding at all when using a transaction manager.

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