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Java Programming : Compilation and Execution: Multiple Choice


Answer the following questions about Java syntax and mistakes which can cause compilation errors, as well as the output generated by sample programs.

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Multiple choice

Your Performance  

1.

Consider the following code:
int i = 1;
switch(c)

  code is illegal and therefore will not compile

  output will be One

  output will be One, followed by Two, and then followed by Three

  output will be One followed by Two

  Half-n-half Clue
 

2.

Which of the following command lines options generates documentation for all classes and methods?

  -public

  -protected

  -verbose

  -encoding

  -private

  Half-n-half Clue
 

3.

With javadoc, which of the following denotes a javadoc comment?

  //#

  /*

  //**

  /**

  Half-n-half Clue
 

4.

Which lines of the following will produce an error?
1. byte a1 = 2, a2 = 4, a3;
2. short s = 16;
3. a2 = s;
4. a3 = a1 * a2;
(The lines are numbered only for illustration in this question.)

  Line 3 only

  Line 4 only

  Line 1 and Line 4

  Line 1 only

  Line 3 and Line 4

  Half-n-half Clue
 

5.

The method int func(int i, int j)

  (B) & (C)

  (C) & (D)

  (A), (B), (C) & (E)

  (A), (B) & (E)

  None of these

  Half-n-half Clue
 

6.

Examine the following class definitions to detect errors, if any.
abstract class MyPanel

  1 Error. Method show() should have a return type

  1 Error. Method show() is not implemented in MyDisplay

  1 Error. MyDisplay does not contain any members

  No errors

  Half-n-half Clue
 

7.

Which error does the following code contain: class Class1

  Class1 should be declared as abstract

  There is no error

  Method func1() must be declared as static

  Class Class1 has not been declared public

  Half-n-half Clue
 


 
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