Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
Threads created by user are always non-daemon threads?
|
they can be made daemon by setDaemon(true)
|
|
|
If you call setDaemon after thread start..
|
IllegalThreadStateException
|
|
|
What is the value of the basic Thread priority?
|
The priority of the newly created thread is set equal to the priority of the thread creating it
|
|
|
describe yeild() method of Thread class
|
Static method. Give hint to current thread to give up CPU to same priority threads
|
|
|
Object.wait() method exceptions
|
InterruptedException, IllegalMonitorStateException
|
|
|
in what circumstances InterruptedException is thrown?
|
waiting, sleeping, joining (or otherwise occupied) thread
|
|
|
interrupted and isInterrupted methods
|
interrupted - clear status, isInterrupted - don't cleat status
|
|
|
What methods cannot be synchronized
|
Abstract methods
|
|
|
What Thread.interupt() method do?
|
if wait/sleep/join - InterruptedException; otherwise - just set status
|
|
|
Some methods acquire locks, some not
|
acquiring a monitor will not prevent any other method which does not use monitors, from accessing the shared resource
|
|
|
Wait and notify order
|
If notify will run before wait the program will get stuck
|
|
|
Two threads try increment the value simultaneously
|
it can be incremented only by one as operation is not atomic
|
|
|
Whait is return type of call() method in Callable class?
|
type V - the result type of method call
|
|
|
Does Thread class implement Runnable interface?
|
Yes, it does.
|
|
|
Explain differences between RecursiveTask and RecursiveAction classes
|
RecursiveTask: task2.fork;return task2.join+task1.compute; RecursiveAction - no return.
|
|
|
List the main methods of Executor class
|
Executor is not a class but an interface. It contains just execute (Runnable command) method.
|
|
|
List main AtomicInteger methods
|
Add, increment, decrement and get
Get and add, increment, decrement get, set XXXvalue compareAndSet |
