Download Oracle.1z0-813.ActualTests.2018-09-28.28q.tqb
| Vendor: | Oracle |
| Exam Code: | 1z0-813 |
| Exam Name: | Upgrade to Java SE 8 OCP |
| Date: | Sep 28, 2018 |
| File Size: | 2 MB |
Demo Questions
Question 1
Given the code fragment:
What is the result?
- [x, x][x, x, x, x]
- [x, x]
- [x][x, x][x, x, x]
- [x][x, x][x, x, x][x, x, x, x]
Correct answer: D
Explanation:
CyclicBarrier is a synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point. CyclicBarriers are useful in programs involving a fixed sized party of threads that must occasionally wait for each other. The barrier is called cyclic because it can be re-used after the waiting threads are released. Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CyclicBarrier.html CyclicBarrier is a synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point. CyclicBarriers are useful in programs involving a fixed sized party of threads that must occasionally wait for each other. The barrier is called cyclic because it can be re-used after the waiting threads are released.
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CyclicBarrier.html
Question 2
In 2015. daylight saving time in New York, USA, begins on March 8th at 2:00 AM. As a result, 2:00 AM becomes 3:00 AM.
Given the code fragment:
Which is the result?
- 2:00 – difference: 1
- 3:00 – difference: 2
- 4:00 – difference: 3
- 4:00 – difference: 2
Correct answer: D
Explanation:
Reference: http://docs.oracle.com/javase/8/docs/api/java/time/ZoneId.html Reference: http://docs.oracle.com/javase/8/docs/api/java/time/ZoneId.html
Question 3
Which is true the regarding the java.nio.file.Path interface?
- Implementations of this interface are not safe for use by multiple concurrent threads.
- The interface extends the WatchService interface.
- Implementations of this interface are immutable.
- Paths associated with the default provider are not interoperable with the java.io.File class.
Correct answer: B
Explanation:
This interface extends Watchable interface so that a directory located by a path can be registered with a WatchService and entries in the directory watched. Reference: https://docs.oracle.com/javase/7/docs/api/java/nio/file/Path.html This interface extends Watchable interface so that a directory located by a path can be registered with a WatchService and entries in the directory watched.
Reference: https://docs.oracle.com/javase/7/docs/api/java/nio/file/Path.html
