Answer: System.gc() and garbage collection : Questions « Thread « SCJP
Home
SCJP
1.
Java Source And Data Type
2.
Operators
3.
Modifiers
4.
Type Casting
5.
Statements
6.
Object Oriented
7.
Thread
8.
Utility Classes
9.
File
SCJP
»
Thread
»
Questions
7.11.20.Answer: System.gc() and garbage collection
B.
7.11.Questions
7.11.1.
The notify() method is defined in class java.lang.Thread(True/False)
7.11.2.
Answer: notify
7.11.3.
When a thread is waiting as a result of wait(), it releases its lock(True/False)
7.11.4.
Answer: wait() and lock
7.11.5.
The notify() method causes a thread to immediately release its lock(True/False)
7.11.6.
Answer: notify and lock(2)
7.11.7.
notifyAll() notifies all waiting threads, regardless of the object they're waiting on(True/False)
7.11.8.
Answer: notifyAll and waiting threads
7.11.9.
What is the result of this code(wait and time)?
7.11.10.
Answer: wait and time
7.11.11.
What is the result(extends Thread)?
7.11.12.
Answer: extends Thread
7.11.13.
What is the output(two threads)?
7.11.14.
Answer: two threads
7.11.15.
What is the output(joining thread)?
7.11.16.
Answer: joining thread
7.11.17.
What is the output(synchronized block and thread)?
7.11.18.
Answer: synchronized block and thread
7.11.19.
The following code will start the garbage collection mechanism(True/False)?
7.11.20.
Answer: System.gc() and garbage collection
7.11.21.
Calling Runtime.getRuntime().gc() will probably start the garbage collection mechanism, but there is no guarantee(True/False)?
7.11.22.
Answer: Runtime.getRuntime().gc() and garbage collection
7.11.23.
The garbage collection Thread has a low priority(True/False)?
7.11.24.
Answer: garbage collection and thread
7.11.25.
Which method must appear in the class to satisfy the Runnable interface requirements.
7.11.26.
Answer: Runnable interface
7.11.27.
Which statements are correct after executing the following line:
7.11.28.
Answer: thread state
7.11.29.
What could be put to XXX to prevent Thread collisions?
7.11.30.
Answers: synchronized and synchronizable
www.java2java.com
|
Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.