Two phase commit for distributed transactions in Java

This is a demonstration of the two-phase commit concept.

[hopegolestany]

Dude this is not the 2pc, the commit may still fail for whatever reason, you still need to lock the resource somehow even after the commit to handle this condition.

[firatkucuk]

Let's say the first statement works fine and your TwoPhaseCommitService committed the first transaction but the second one failed. How are you gonna rollback the first commit? It will cause an inconsistent state.