Tag: programming languages

Questions Related to programming languages

class A2{ static void doprint(){ System.out.println("A2"); } } class B2 extends A2{ static void doprint(){ System.out.println("B2"); } } public class StaticTest { public static void main(String[] args) { A2 a = new B2(); a.doprint(); } }

technology programming languages

  1. A2

  2. B2

  3. Compilation fails

  4. runtime error

Show answer
Correct Option: A

public class SwitchTest { public static void main(String[] args) { Boolean b = Boolean.TRUE; switch(b) { case(true): System.out.println("A"); case(false): System.out.println("B"); case(3): System.out.println("C"); } } } output?
technology programming languages

  1. A

  2. ABC

  3. comilation fails

  4. AB

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Correct Option: C

Which one of the following is not a JSP Action?
technology programming languages

  1. jsp:forward

  2. jsp:getBean

  3. jsp:param

  4. jsp:getProperty

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Correct Option: B
  1. Which of the following can be used/efficient to store items(name/value pairs) in which the number of items can be less or more(not known)?
technology programming languages

  1. Hashtable.

  2. ListDictionary.

  3. Hybrid Dictionary

  4. ArrayList.

  5. StringDictionary.

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Correct Option: C

Which of the following can be used to store items(name/value pairs) implemented as strongly typed strings?
technology programming languages

  1. Hashtable.

  2. ListDictionary.

  3. Hybrid Dictionary.

  4. NameValueCollection.

  5. StringDictionary.

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Correct Option: E

Valuetypes cannot be assigned with NULL Value?
technology programming languages

  1. TRUE.

  2. FALSE

  3. Cant say.

  4. Depends on the valuetype used.

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Correct Option: B

Constants cannot be marked with which of the below keywords
technology programming languages

  1. Public.

  2. Private.

  3. Protected.

  4. static.

  5. Internal.

  6. ProtectedInternal.

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Correct Option: D

A delegate is

technology programming languages

  1. A method without code

  2. A method which is called when an event is triggered.

  3. A method which doesnot contain code.

  4. A reference to a method which itself doesnot contain code.

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Correct Option: D

which of the following classes require the Serializable attribute to be defined to serialize and deserialize objects?
technology programming languages

  1. BinaryFormatter and SOAPFormatter

  2. BinaryFormatter and XmlSerializer

  3. XmlSerializer.

  4. BinaryFormatter , SOAP Formatter, XmlSerializer

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Correct Option: A

IDeserializationCallback.OnDeserialization() , an interface method implemented is called automatically by runtime
technology programming languages

  1. After serialization is complete

  2. Before deserialization

  3. After Deserialization is complete

  4. To be called explicitly after serialization

  5. To be called explicitly after Deserialization.

Show answer
Correct Option: C