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Question ID 21943

Which two may precede the word "class" in a class declaration?

Option A

local

Option B

public

Option C

static

Option D

volatile

Option E

synchronized

Correct Answer B,C
Explanation Explanation: B: A class can be declared as public or private. C: You can declare two kinds of classes: top-level classes and inner classes. You define an inner class within a top-level class. Depending on how it is defined, an inner class can be one of the following four types: Anonymous, Local, Member and Nested top-level. A nested top-level class is a member classes with a static modifier. A nested top-level class is just like any other top-level class except that it is declared within another class or interface. Nested top-level classes are typically used as a convenient way to group related classes without creating a new package. The following is an example: public class Main { static class Killer {


Question ID 21944

Which three are bad practices?

Option A

Checking for ArrayindexoutofBoundsException when iterating through an array to determine when all
elements have been visited

Option B

Checking for Error and. If necessary, restarting the program to ensure that users are unaware problems

Option C

Checking for FileNotFoundException to inform a user that a filename entered is not valid

Option D

Checking for ArrayIndexoutofBoundsExcepcion and ensuring that the program can recover if one occur

Option E

Checking for an IOException and ensuring that the program can recover if one occurs

Correct Answer A,B,E
Explanation Explanation: A, E: Better to check if the index is within bounds. B: Restarting the program would not be a good practice. It should be done as a last possibility only. Incorrect answers: Checking for FileNotFoundException and IOException exceptions are good practices.

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