Java Programming OOPs
Questions 81 to 90
What is the fundamental unit of information of writer
streams?
(a) Characters (b)
Bytes
(c) Files (d)
Records (e) Information.
|
|
File class is included in which package?
(a) java.io package (b) java.lang package
(c) java.awt package (d) java.net.package
(e) java.util.package.
|
|
Given the code
String s1 = “ yes” ;
String s2 = “ yes “ ;
String s3 = new String ( s1);
Which
of the following would equate to true?
(a) s1 == s2 (b)
s1 = s2 (c) s3 == s1 (d) s3=s1 (e) s1!=s2.
|
|
URL stands for
(a) Universal reader locator (b) Universal reform loader
(c) Uniform resource loader (d) Uniform resource locator
(e) Uniform reader locator.
|
|
What is the sequence of major events in the life of an
applet?
(a) init, start, stop,
destroy (b)
start, init , stop , destroy
(c) init, start , destroy, stop (d) init, start, destroy
(e) destroy, start, init, stop.
|
|
Which of the following is true in regard to applet execution?
(a) Applets loaded from
the same computer where they are executing have the same restrictions as
applets loaded from the network.
(b) Applets loaded and executing locally have
none of the restrictions faced by applets that get loaded from the network.
(c) Applets loaded and executing locally have
some restrictions faced by applets that get loaded from the network.
(d) Applets cant react to user input and change dynamically
(e) Applets can be
run independently.
|
|
What is the return type of the method getID() defined in
AWTEvent class
(a) Int (b)
long (c) Object (d) Component (e) float.
|
|
Which of the following events will cause a thread to die?
(a) The method sleep( ) is called
(b) The method wait( ) is called
(c) Execution of the start( ) method ends
(d) Execution of the run( ) method ends
(e) Execution of the run() method is called.
|
|
What will be the result of the expression 13 & 25?
(a) 38 (b)
25 (c) 9 (d) 12 (e) 21.
|
|
Which of the following statements are true regarding the
finalize( ) method?
(a) The finalize ( ) method must be declared
with protected accessibility
(b) The compiler will fail to compile the code
that explicitly tries to call the finalize( ) method
(c) The body of the finalize ( ) method can
only access other objects that are eligible for garbage collection
(d) The finalize ( ) method can be overloaded
(e) The finalize() method cant be
overloaded.
|
Answers
Answer : (a)
Reason : Writer
streams uses characters as their fundamental unit of information.
|
|
Answer : (a)Reason
:File class is included in inputoutput
|
|
Answer : (a)
Reason : == is a
comparision operator whereas = is an assignment operator.
|
|
Answer : (d)
Reason : The
abbreviation of URL uniform resource locator.
|
|
Answer : (a)
Reason : The
remaining all are incorrect because the sequence of major events are wrong.
|
|
Answer : (b)
Reason : The
remaining Choices are contradicting the properties of applets.
|
|
Answer : (a)
Reason : Int is the
return type of the method getID() in AWTEvent Class.
|
|
Answer : (d)
Reason : A thread
dies when the execution of the run( ) method ends. The call to the start
method is asynchronous, that is, it returns immediately, and it enables the
thread for running. Calling the sleep( ) or wait( ) methods will only block
the thread temporarily.
|
|
Answer : (c)
Reason : 11001&1101==9;
|
|
Answer : (d)
Reason : The
finalize( ) method like any method can be called explicitly if it is
accessible. Intended purpose of the method is to be called by the garbage
collector in order to clean up before an object is destroyed. Overloading the
finalize ( ) method is allowed, but only the method with the original
signature will be called by the garbage collector.
|
The Q.83 is wrong, the answer must be (e) s1!=s2. Because s1 = " yes" and s2 = " yes ". There are more blanks in s2 than s1.
ReplyDeletethank you.
ReplyDeletejava tutorial
java tutorial
There is no answer related to java
ReplyDelete