1) Which is a mechanism where one object acquires all the properties and behaviors of the parent object?
a. Inheritance
b. Encapsulation
c. Polymorphism
d. None of the above
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Answer
Explanation
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ANSWER: Inheritance
Explanation:
No explanation is available for this question!
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2) Java Virtual Machine is platform independent.
a. True
b. False
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Answer
Explanation
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ANSWER: False
Explanation:
No explanation is available for this question!
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3) What is the range of the int data type?
a. –2,147,483,648 to 2,147,483,647
b. -2,147,483,647 to 2,147,483,648
c. -32,768 to 32,767
d. -32,767 to 32,768
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Answer
Explanation
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ANSWER: –2,147,483,648 to 2,147,483,647
Explanation:
No explanation is available for this question!
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4) Which are subclasses of FilterInputStream and FilterOutputStream?
a. PipedInputStream
b. PipedOutputStream
c. DataInputStream
d. DataOutputStream
e. Both C & D
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Answer
Explanation
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ANSWER: Both C & D
Explanation:
No explanation is available for this question!
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5) Which method returns a reference to the currently executing thread object?
a. currentThread()
b. runningThread()
c. runnableThread()
d. None of the above
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Answer
Explanation
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ANSWER: currentThread()
Explanation:
No explanation is available for this question!
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6) If you import a package, subpackages will not be imported.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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7) Which keyword is used to make the classes and interface of another package accessible to the current package?
a. Import
b. Implements
c. Instanceof
d. None of the above
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Answer
Explanation
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ANSWER: Import
Explanation:
No explanation is available for this question!
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8) Which access specifiers can be used for a class so that it’s members can be accessed by a different class in the different package?
a. Private
b. Public
c. Protected
d. None of the above
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Answer
Explanation
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ANSWER: Public
Explanation:
No explanation is available for this question!
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9) The Object class is not a parent class of all the classes in java by default.
a. True
b. False
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Answer
Explanation
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ANSWER: False
Explanation:
No explanation is available for this question!
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10) Which is a superclass of all exception classes?
a. Throwable
b. Exception
c. RuntimeException
d. IOException
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Answer
Explanation
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ANSWER: Throwable
Explanation:
No explanation is available for this question!
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11) The performance of the application will be faster if you use PreparedStatement interface because query is compiled only once.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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12) Which method is used to send the same request and response objects to another servlet in RequestDispacher ?
a. forward()
b. sendRedirect()
c. Both A & B
d. None of the above
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Answer
Explanation
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ANSWER: forward()
Explanation:
No explanation is available for this question!
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13) Servlets handle multiple simultaneous requests by using threads.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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14) Web server is used for loading the init() method of servlet.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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15) What is used to display the intermediate result in an interceptor?
a. Params Interceptor
b. Custom Interceptor
c. ExecAndWait Interceptor
d. Prepare Interceptor
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Answer
Explanation
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ANSWER: ExecAndWait Interceptor
Explanation:
No explanation is available for this question!
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16) The workflow interceptor is used to get information about the error messages defined in the action class.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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17) EJB is like COM, Abbreviate the term COM?
a. Component Object Model
b. Component Oriented Model
c. Common Object Model
d. Common Oriented Model
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Answer
Explanation
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ANSWER: Component Object Model
Explanation:
No explanation is available for this question!
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18) EJB is a specification for J2EE server, not a product; Java beans may be a graphical component in IDE.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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19) Which package is used for Remote Method Invocation (RMI)?
a. java.lang.rmi
b. java.lang.reflect
c. java.applet
d. java.rmi
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Answer
Explanation
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ANSWER: java.rmi
Explanation:
No explanation is available for this question!
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20) RMI is a server-side component; It is not required to be deployed on the server.
a. True
b. False
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Answer
Explanation
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ANSWER: False
Explanation:
No explanation is available for this question!
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21) JavaServer Pages often serve the same purpose as programs implemented using the Common Gateway Interface (CGI)
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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22) How many jsp implicit objects are there and these objects are created by the web container that are available to all the jsp pages?
a. 8
b. 9
c. 10
d. 7
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Answer
Explanation
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ANSWER: 9
Explanation:
No explanation is available for this question!
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23) JSPs eventually are compiled into Java servlets, you can do as much with JSPs as you can do with Java servlets.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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24) The ResultSet.next method is used to move to the next row of the ResultSet, making it the current row.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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25) Drivers that are JDBC Compliant should normally support scrollable result sets, but they are not required to do so.
a. True
b. False
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Answer
Explanation
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ANSWER: True
Explanation:
No explanation is available for this question!
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