programming languages Online Quiz - 250

Description: programming languages Online Quiz - 250
Number of Questions: 20
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Tags: programming languages
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class P { public void doIt() {} } class C extends P { private void doIt() {}} It is not legal.

  1. True

  2. False

Correct Option: A
  1. Iterpreted Language

  2. Compiled Language

  3. Byte Code Language

  4. None of these

Correct Option: D

The main method has to be "public static" because of the following reasons. (Two options)

  1. static because it has to be constant and cannot be changed.

  2. static because it has to be loaded by the JVM without instantiating it

  3. public because other classes may also call the main method of a class

  4. public because JVM has to have access to the main method in order to call it.

Correct Option: B,D

Which of the following are valid main method declarations?

  1. static public void main(String []args)

  2. public static void main(String heyhey[])

  3. public static int main(String[] args)

  4. public static void main(String ...args)

  5. public static void main (String [], int argv)

Correct Option: A,B,D
  1. all sub-classes of Throwable

  2. not the sub classes of RuntimeException

  3. all sub-classes of Error

  4. None of these

Correct Option: B

int i=5; int a = + --i/2.0;

  1. Does not compile saying binary operator has invalid use

  2. 2.0

  3. 2.5

  4. exception will be thrown

Correct Option: B

What gets printed here... System.out.println("Sum of 5 and 3 is:"+5+3);

  1. Sum of 5 and 3 is:8

  2. error during compilation

  3. Sum of 5 and 3 is:53

  4. None of these

Correct Option: C

Based on the description above, we could say that the variable name "lAccountNum" follows the Systems Hungarian Notation.

  1. True

  2. False

Correct Option: A
  1. a byte

  2. a word

  3. a boolean

  4. a null-terminated string

Correct Option: B

Given the above scenario, the variable name "aulColors" represents:

  1. an array of unsigned long

  2. an array of floating-point values

  3. an array of unary

  4. an array of zero-terminated strings

Correct Option: A

All variables in an Interface are by default __________.

  1. public

  2. final

  3. static

  4. all the above

  5. there should not be any variable in an interface

Correct Option: D
  1. a class implements one or more interfaces

  2. a class extends one or more interfaces

  3. an interface extends one of more interfaces

  4. Serializable is a marker Interface

Correct Option: B
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