Java Programming Language Quiz-8

PROGRAMMING IN JAVA
Assignment6
TYPE OF QUESTION: QUIZ
Number of questions: 10 Total mark: 10 × 1 = 10


QUESTION 1:
Which of the following is NOT a method of the Thread class in Java?

a. isAlive()
b. getPriority()
c. getNames()
d. sleep()

Correct Answer: c

Detailed Solution:

getName() is a method in the pre-defined Java class Thread but not getNames(). Other methods
like isAlive(), getPriority() and sleep() are defined in the Thread class.



QUESTION 2:
Which of the following method can be used to know the priority of a thread?

a. getPriority()
b. priority()
c. isRunning()
d. getThreadPriority()

Correct Answer: a

Detailed Solution:

getPriority() is the method, which is used to know the priority given to a thred.

, QUESTION 3:
Which of the following can be used to create an instance of Thread?

a. By implementing the Runnable interface.
b. By extending the Thread class.
c. By creating a new class named Thread and calling method run().
d. By importing the Thread class from package.

Correct Answer: a, b

Detailed Solution:

An application that creates an instance of Thread must provide the code that will run in that
thread. There are two ways to do this:

 Provide a Runnable object. The Runnable interface defines a single method, run, meant
to contain the code executed in the thread. The Runnable object is passed to the Thread
constructor
 Subclass Thread. The Thread class itself implements Runnable, though its run method
does nothing. An application can subclass Thread, providing its own implementation of
run

Reference:https://docs.oracle.com/javase/tutorial/essential/concurrency/runthread.html



QUESTION 4:
Which of these keywords must be used to monitor for exceptions?

a. try
b. finally
c. throw
d. catch

Correct Answer: a

Detailed Solution:

A try block must be included in a Java program to make the program robust by handling
exceptions properly.