Java Memory Model basics and java model Basics

Java Memory Model basics and java model Basics

Java Memory Model: 1
Thread communication: 2
Re-sorting: Program Efficiency
Happens-before: If yes, it will not be reordered.
Memory barrier command: deprecated sorting
Data Dependency: a single thread exists and will not be rearranged.
As-if-serial: ensures that the rescheduling has no effect on the results of a single thread.
Data competition: Correct synchronization means no competition and sequential consistency
Sequence consistency: ensures visibility and consistency
Synchronization: including correct use of common synchronization primitives (lock, volatile, and final)