Ocp: Oracle Certified Professional Java Se 8 Pr... -

: Working with worker threads ( Runnable , Callable ), ExecutorService , and identifying threading problems like deadlocks or race conditions.

: Advanced use of inheritance, encapsulation, and polymorphism; implementing singleton and immutable classes; and overriding methods like hashCode , equals , and toString . OCP: Oracle Certified Professional Java SE 8 Pr...

: Demonstrating competence with Lambda expressions , built-in functional interfaces, and the Stream API for filtering, searching, and collecting data. : Working with worker threads ( Runnable ,