In Java, it is legal to have multiple variables with the same name at different scope levels. When this happens, what is the order in which Java chooses which of the variables to use?

Class or object attributes

Answer $1$ Question $5$

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Local variables

Answer $2$ Question $5$

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Method parameters

Answer $3$ Question $5$

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Question $6$

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Assume a class, OOFClass, defines a constructor with no arguments. You are editing OOFClass, and you want to create a new constructor that reuses the existing constructor to do some of the work. How would you call that constructor?

Question $6$Answer

a$.$

super$(),$ called as the first command in the old constructor

b$.$

this$(),$ called anywhere in the old constructor

c$.$

super$(),$ called anywhere in the new constructor

d$.$

this$(),$ called anywhere in the new constructor

e$.$

this$(),$ called as the first command in the old constructor

f$.$

super$(),$ called anywhere in the old constructor

g$.$

this$(),$ called as the first command in the new constructor

h$.$

super$(),$ called as the first command in the new constructor

Question $7$

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DESCRIPTION

Scanner keyboard $=$ new Scanner$($System$.$in$)$;

int number $=0$;

number $=$ keyboard.nextInt$()$;

while $($number $>0)$

$\{$

System.out.println$("$Hi there" $)$;

number $=$ number $*$ number;

$\}$

QUESTION

How many times will the line containing $"$Hi there" be output to screen when the above piece of code executes if the user inputs

$5?$

Question $7$Select one:

None of the other options

$1$

$0$

$10$

$5$

Question $8$

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if $($ testMark $>=8)$

$\{$

System.out.print$("$I usually remember to work through the skills test bank!"$)$;

$\}$

else if $($ testMark $>=5)$

$\{$

System.out.print$("$I usually remember some of last week's lectures!"$)$;

$\}$

else if $($ testMark $>=2)$

$\{$

System.out.print$("$I usually remember to turn up to my lab!"$)$;

$\}$

else

$\{$

System.out.print$("$I usually remember my password!"$)$;

$\}$

Which of the following statements is output to screen if the value of the variable testMark is $6?$

Question $8$Select one:

I usually remember some of last week's lectures!

I usually remember to work through the skills test bank!

I usually remember my password!

I usually remember to turn up to my lab!

Question $9$

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Select the true statement.

Question $9$Select one:

a$.$

'this' refers to the current method.

b$.$

'this' can be used inside static $($class$)$ methods.

c$.$

'this' can be used inside instance methods.

Question $10$

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Overloaded methods in a class have:

Question $10$Answer

a$.$

Same name and different signature

b$.$

Same name but different return type

c$.$

Different name but same signature

d$.$

Same name and same signature

Question $11$

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Given the following Java code, what would be the result if $3\mathrm{.}14$ was entered at the prompt? import java.util.$*$; public class EchoInteger $\{$ public static void main$($String$[]$ args$)\{$ Scanner keyboard $=$ new Scanner$($System$.$in$)$; System.out.println$("$Enter an integer: $")$; int input $=$ keyboard.nextInt$()$; System.out.println$("$The integer was $"+$ input $+".")$; $\}\}$

Question $11$Select one:

a$.$

InputMismatchException

b$.$

Print out "The integer was $3\mathrm{.}14."$

c$.$

Print out "The integer was $3."$

Question $12$

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What is the output of this program?

public class Thing

$\{$

public int a;

public static void main$($String$[]$ args$)$

$\{$

Thing thing$1=$ new Thing$()$;

thing$1.$a $=8$;

Thing thing$2=$ new Thing$()$;

thing$2.$a $=2$;

Thing thing$3=$ thing$2$;

thing$3.$a $=$ thing$1.$a $-$ thing$2.$a;

System.out.print$($thing$2.$a$)$;

$\}$

$\}$

Answer:Question $12$

Question $13$

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Assume a is declared as int$[]$ a $=\{1,2,3,4,5\}$;$.$ What is the value of a$[$a$.$length$]?$

Question $13$Answer

a$.$

$5$

b$.$

$0$

c$.$

$4$

d$.$

$6$

e$.$

Nothing; an exception is thrown

Question $14$

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If the base type of an array is an object type, each element of the array holds $\_\_\_\_\_.$

Question $14$Answer

a$.$

the actual value of that element

b$.$

a reference to an object of that type

c$.$

$0$

d$.$

null

Question $15$

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A $\_\_\_\_\_\_\_\_\_$ access modifier means that the attribute$/$method is accessible to all subclasses of the class.

Question $15$Answer

a$.$

Protected

b$.$

Package

c$.$

Public

d$.$

Private

Question $16$

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Assume we have two variables declared as int$[]$ a $=\{1,2,3,4,5\}$; and int$[]$ b $=\{1,2,3,4,5\}$;$.$ What is the value of a $==$ b$?$

Question $16$Answer

a$.$

true

b$.$

false