Test JAVA Fundamentals Midterm Exam

Test: Java Fundamentals Midterm Exam Review your answers, feedback, feedbac k, and question qu estion scores below. A An n asterisk (*) indicates a correct answer. Section 2 (Answer all questions in this section) 1n Alice, !rocedural abstraction is the conce!t of "akin# code easier to . understand and reuse. $rue or false%

&ark for Review (1) 'oints

$rue (*) alse orrect 2n Alice, if a !rocedure is declared for a clownish class, which classes . can use the !rocedure%


$he clownish class and Swi""er class lownish class (*) $he !aa"aish class, clownish class, and Swi""er class Any class with +ish+ in the class na"e orrect ro" your Alice lessons, which of the followin# is a tool to show the . lo#ic of an ani"ation%


-isual storyboard lowchart (*) 'ie chart Scene editor lass chart

ncorrect. Refer to Section 2 esson /. 0n Alice, which function is used to "ove an obect directly to the center . !oint of another obect%


#etbect #eturation #ete!th #etistance (*) ncorrect. Refer to Section 2 esson 3. /4hich of the followin# state"ents about what ha!!ens wh en the . followin# code is e5ecuted is false%


$he "essa#e +'rintin# So"e $e5t+ will be !rinted until loo!-al is no lon#er less than /. $he variable loo!-al is initiali6ed to 7. $he condition loo!-al 8 / is tested after the block is e5ecuted. (*) $he condition loo!-al 8 / returns a boolean value. 9one of the above. orrect :.f you want one "essa#e to dis!lay if a user is below the a#e of 1; and a


different "essa#e to dis!lay if the user is 1; or older, what ty!e of construct would you use% for all loo! do loo! while loo! if (*) ncorrect. Refer to Section 2 esson 10. 3. $he Alice  control structure requires the false state"ent to be !o!ulated. $rue or false%


$rue alse (*) orrect ;. n Alice, o n rder and o $o#ether<


Are "ove state"ents Are control state"ents (*) Are co"!le5 state"ents 9one of the above orrect =. n Alice, the set-ehicle !rocedure will associate one obect to another. $rue or false%


$rue (*) alse ncorrect. Refer to Section 2 esson :. 17. 4hich of the followin# actions would require a control state"ent to control ani"ation ti"in#%


(hoose all correct answers) A bi!ed obect walkin#. (*) A rock obect turnin#. A fish swi""in#. (*) A bird flyin#. (*) ncorrect. Refer to Section 2 esson : 1n 1.Alice, how is a one> shot !rocedu re differen t fro" !rocedu res in the ode editor%


ne>shot !rocedures are only available for actin# obects, while !rocedures are available for all obects. ne>shot !rocedures are available in the ode editor, while !rocedures are available in the Scene editor. A one>shot !rocedure e5ecutes only one ti"e to re>!osition the obect, while !rocedures in the ode editor e5ecute every ti"e the Run button is clicked. (*) All of the above ncorrect. Refer to Section 2 esson 2.

12. ro" your Alice lessons, variables are fi5ed and cannot be chan#ed. $rue or false%


$rue alse (*) orrect 1. 4hich of the followin# !ro#ra""in# instructions co""ands the fish to continuously "ove forward a rando" s!eed between 7./ and 1.7 "eters, "inus 7.2/ "eters, until it collides with the shark%

(*)


orrect 10. ro" your Alice lessons, what does the ount control state"ent do%


?5ecutes state"ents a rando" nu"ber of ti"es. ?5ecutes state"ents si"ultaneously. ?5ecutes state"ents a s!ecific nu"ber of ti"es. (*) ?5ecutes state"ents while a condition is true. orrect 1/. ro" your Alice lessons, when testin# your ani"ation, you should test that co""ents were added below each sequence of instructions in the code. $rue or false%


$rue alse (*) orrect Section 2 (Answer all questions in this section) 1:.ro" your Alice lessons, at what !oint in the ani"ation !rocess do you confir" the ite"s on the +hecklist for Ani"ation o"!letion+%


@efore desi#nin# the ani"ation. urin# and after the ani"ation !rocess. (*) At the be#innin# of the ani"ation !rocess. After addin# each !rocedure to the ode editor. orrect

13.ebu##in# and testin# is the !rocess of runnin# the ani"ation one ti"e, and adustin# the control state"ents, !rocedures, and ar#u"ents.


$rue alse (*) ncorrect. Refer to Section 2 esson . 1;.ro" your Alice lessons, co"!lete the followin# sentence< 4hen coded, an event tri##ers a .


nfinite loo! Ballery 'rocedure (*) Scene orrect 1=.n Alice, which of the followin# !ro#ra""in# state"ents "oves the butterfly forward, double the distance to the tree%


this.@utterfly "ove forward Cthis.@utterfly #etistance$o this.$ree * 2D (*) this.@utterfly "ove backward Cthis.@utterfly #etistance$o this.$ree * 2D this.@utterfly "ove backward Cthis.@utterfly #etistance$o this.$ree E 2D this.@utterfly "ove forward Cthis.@utterfly #etistance$o this.$ree E 2D orrect 27.n Alice, which of the followin# !ro#ra""in# state"ents "oves the fish forward, the distance to the rock, "inus the d e!th of the rock%


this.ish "ove forward Cthis.Rock #etistance$o this.ish > this.ish #ete!thD this.ish "ove forward Cthis.ish #etistance$o this.Rock > this.Rock #ete!thD (*) this.ish "ove forward Cthis.Rock #etistance$o this.ish >

this.ish > 2D this.Rock "ove forward Cthis.Rock #etistance$o this.ish > this.ish > 2D orrect 2?5a"ine the followin# code. 4hat are the variables% 1.


(hoose all correct answers) ar#s n (*) i (*) t ncorr ect. Refer to Sectio n2 esso n 1. 22. 4hich of the followin# is not a valid arith"etic o!erator in Fava%

G


E > * H 9one of the above (*) orre ct

Section  (Answer all questions in this section) 2. ro" your Breenfoot lessons, source code is written in the ode editor. $rue or false%


$rue (*) alse orre ct 20. n Breenfoot, what ha!!ens if the condition is false in an if>state"ent% $he !ro#ra""in# state"ents are e5ecuted. $he if>state"ent is e5ecuted. $he act "ethod is deleted. $he !ro#ra""in# state"ents are not e5ecuted. (*) orre ct


2/. Ise your Breenfoot knowled#e to answer the question. ne reason to write a defined "ethod in a class is to chan#e the behavior of the class. $rue or false%


$rue alse (*) ncorr ect. Refer to Sectio n esso n: &ark for Review

2:.ro" your Breenfoot lessons, how do you call a defined "ethod%

(1) 'oints

all the "ethod fro" the act "ethod. (*) all the "ethod fro" the defined "ethod. 4rite the "ethod in the 4orld su!erclass. 4rite the "ethod in the instance. 4rite the "ethod in the source code. orrect 23. 4hich of the followin# ty!e of audience should you ask to !lay your Breenfoot #a"e durin# the testin# !hase%


$estin# $ar#et (*)

'ri"ary 'ro#ra""er ncorrect. Refer to Section  esson 0. 2;. ro" your Breenfoot lessons, a !roble" state"ent defines the !ur!ose for your #a"e. $rue or false%


$rue (*) alse orrect 2=. Isin# Breenfoot, how do we chan#e the si6e and resolution of the 4orld instance%


?dit the "ethods in the class. ?dit the values in the constructor. (*) elete the instance. ?dit the values in the classJs act "ethod. orrect 7. n Breenfoot, an if>state"ent is used to alternate between dis!layin# two i"a#es in an instance. $rue or false%


$rue alse (*) orrect 1.Isin# the Breenfoot ?, when is a constructor auto"atically e5ecuted%


4hen source code is written. 4hen a new i"a#e is added to the class. 4hen a new instance of the class is created. (*) 4hen the act "ethod is e5ecuted. orrect 2. ro" your Breenfoot lessons, which of the followin# is an e5a"!le of a ty!e of data !assed throu#h a !ara"eter%


ðods lasses nte#ers (*) Scenarios ncorrect. Refer to Section  esson 2. . n Breenfoot, the !ro!erties of an instance can be "odified in the docu"entation. $rue or false%


$rue alse (*) ncorrect. Refer to Section  esson 2. 0. ro" your Breenfoot lessons, which of the followin# are !ro!erties of an instance%


Si6e olor "a#e file ðods All of the above (*)

ncorrect. Refer to Section  esson 2. /. n the followin# Breenfoot "ethod si#nature, which is the "ethod na"e%


void turneft() () void turneft (*) eft orrect :.ro" your Breenfoot lessons, which of the followin# is not a characteristic of a static "ethod%


@elon#s to a class itself @elon#s to an instance itself (*) Available for other classes to use with dot notation Si#nature contains the word static s a "ethod ncorrect. Refer to Section  esson /. 3. ro" your Breenfoot lessons, dot notation allows you to use a "ethod fro" a different class, if the class you are !ro#ra""in# does not !ossess the "ethod. $rue or false%

$rue (*) alse orrect


;. 4hen a Breenfoot code se#"ent is e5ecuted in an if> state"ent, each line of code is e5ecuted in sequential order. $rue or false%


$rue (*) alse orrect =. n Breenfoot, you can use co"!arison o!erators to co"!are a variable to a rando" nu"ber. $rue or false%


$rue (*) alse orrect 07. ro" your Breenfoot lessons, the keyown "ethod is located in which class%


Actor Breenfoot (*) Breenfoot"a#e 4orld orrect 01.ro" your Breenfoot lessons, which of the followin# is not a ste! to creatin# a new subclass%


Ri#ht>click on a su!erclass. lick 9ew subclass... 9a"e the class. Select an i"a#e for the class. 'ro#ra" the class to "ove forward. (*) ncorrect. Refer to Section  esson 1. 02. ro" your Breenfoot lessons, a scenario is a #a"e or si"ulation i"!le"ented in Breenfoot. $rue or false%


$rue (*) alse orrect 0. Kow would the followin# sentence be written in Breenfoot source code% f ukeJs le# is down, and the keyboard key +d+ is down...


if (LLisown M Breenfoot.isNeyown(+d+) ) if (Misown LL Breenfoot.isNeyown(+d+) ) if (isown LL Breenfoot.isNeyown(+d+) ) (*) if (MBreenfoot.isNeyown LL isown(+d+) ) orrect 00. ro" your Breenfoot lessons, what is a loo!%


A state"ent that e5ecutes one se#"ent of code. A state"ent that can e5ecute a section of code "ulti!le ti"es. (*) A state"ent that can e5ecute a section of code one ti"e. A state"ent that can e5ecute a "ethod "ulti!le ti"es. ncorrect. Refer to Section  esson

0/. ro" your Breenfoot lessons, when do infinite loo!s occur%


4hen the loo! is e5ecuted. nly in while loo!s. 4hen the end to the code isnJt established. (*) 4hen the end to the act "ethod isnJt established. ncorrect. Refer to Section  esson 17. Section  (Answer all questions in this section) 0n the followin# Breenfoot array, what state"ent would you write to access :.the +a+ key% Neyna"es O C+a+, +b+, +c+, +d+DP


keyna"esQ2 keyna"esQ+a+ keyna"esQ7 (*) keyna"esQ+a+ key orrect 0ro" your Breenfoot lessons, which line of code is "issin# so"ethin#% 3.


1  (*) 0

/ : orrect 0n Breenfoot, the i"a#e below is an e5a"!le of what construct% ;.


ðod o""ent onstructor (*) lass ncorrect. Refer to Section  esson 12. 0Ise your Breenfoot skills to answer the question. 4hat is incorrect in this =.code%


S!acin# "issin# urly brace "issin# 'arenthesis "issin# (*) o""a "issin# orrect

/ro" your Breenfoot lessons, which of the followin# are e5a"!les of 7.abstraction%


(hoose all correct answers) 'layin# a ran#e of sounds when keyboard keys are !ressed. (*) A sin#le instance dis!lays a sin#le i"a#e. Assi#nin# a different keyboard key to each instance. (*) 'ro#ra""in# a sin#le "ove"ent for a sin#le instance. Assi#nin# a different i"a#e file to each instance. (*) orrect

Test JAVA Fundamentals Midterm Exam

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