Final Exam 5r5c64

Review your answers, , and question scores below. An asterisk (*) indicates a correct answer. Section 4 (Answer all questions in this section) 1.What is printed by the following code segment?

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\\\\ \\\\\\\ (*) \\\\\\\\\\\\\\ \\ Correct 2.Consider the following code snippet.


What is printed? Cayrbniz CayrbnizCayrbniz yr (*) ay ArrayIndexOutofBoundsException is thrown Incorrect. Refer to Section 4 Lesson 4. 3.What will the following code segment output? String s="\\\n\"\n\\\n\""; System.out.println(s);


\" \" ""\ "" \ "" \ " \ " (*) " \ " \ " " Incorrect. Refer to Section 4 Lesson 4. 4.The following program prints "Not Equal". True or false?


True False (*) Incorrect. Refer to Section 4 Lesson 4. 5.Which of the following creates a String named Char?


char string; String Char; (*) char Char; char char; String char; Correct Section 4 (Answer all questions in this section)

6. What is the purpose of the Eclipse Editor Area and Views?


(Choose all correct answers) To modify elements. (*) To navigate a hierarchy of information. (*) To choose the file system location to delete a file. Incorrect. Refer to Section 4 Lesson 1. 7. The ______________ is the location into which you will store and save your files.


Perspective Workspace (*) Editor None of the above Incorrect. Refer to Section 4 Lesson 1. 8. You need to _______________ Java code to generate a .class file


Collect Compile (*) Package Assemble Incorrect. Refer to Section 4 Lesson 1. 9. Eclipse does not provide views to help you navigate a hierarchy of information. True or False?


True False (*)

Correct 10. For every opening curly brace { there does not need to be a closing curly brace} for the program to compile without error. True or False?


True False (*) Incorrect. Refer to Section 4 Lesson 1. 11When . importi ng anothe r packag e into a class you must import only the packag e classes that will be called and not the entire packag e. True or false?


True False (*) Incorrect. Refer to Section 4 Lesson 2. 12. Which of the two diagrams below illustrate the general form of a Java program?


Example A Example B (*) Correct 13. Select the statement that declares a number of type double and initializes it to 6 times 10 to the 5th power.


double number=6*10^5;

double number=6e5; (*) double number=6(e5); double number=6*10e5; Incorrect. Refer to Section 4 Lesson 3. 14. What two values can a boolean variable have?


Numbers and characters True and false (*) Relational and logic operators Arithmetic and logic operators Integers and floating point types Correct

Section 5 (Answer all questions in this section) 15. Which of the following is true about a do-while loop?


It is a post-test loop. It is a modified while loop that allows the program to run through the loop once before testing the boolean condition. It continues looping until the condition becomes false. All of the above. (*) Incorrect. Refer to Section 5 Lesson 2. (Answer all questions in this section) 16. How many times will the following loop be executed? What is the value of x after the loop has finished? What is the value of count after the loop has finished? int count = 17; int x = 1; while(count > x){ x*=3; count-=3; }


4; 8; 27 3; 27; 8 (*) 5; 27; 8 5; 30; 5 3; 9; 11 Incorrect. Refer to Section 5 Lesson 2. 17. Why are loops useful?


They save programmers from having to rewrite code. They allow for repeating code a variable number of times. They allow for repeating code until a certain argument is met. All of the above. (*) Incorrect. Refer to Section 5 Lesson 2. 18. In an if-else construct the condition to be evaluated must end with a semicolon. True or false?


True False (*) Incorrect. Refer to Section 5 Lesson 1. 19. This keyword is used to instruct specific code when the input for a switch statement that does not match any of the cases.


Switch Case Break Default (*) None of the above Incorrect. Refer to Section 5 Lesson 1.

20. Which of the following could be a reason to use a switch statement in a Java program?


Because it allows the code to be run through until a certain conditional statement is true. Because it allows the program to run certain segments of code and neglect to run others based on the input given. (*) Because it terminates the current loop. Because it allows the to enter an input in the console screen and prints out a message that the input was successfully read in. Incorrect. Refer to Section 5 Lesson 1. 2What is the output of the following segment of 1code? .


321111 11 (*) 111 1111 This code doesn't compile. Incorrect. Refer to Section 6 Lesson 1. 22. What is the output of the following segment of code?

Mar k for Review (1) Points

321123 642 642246 (*) 312213 This code doesn't compile.

Correct 23. Which of the following statements is not a valid array declaration?


int number[]; float []averages; double marks[5]; counter int[]; (*) Incorrect. Refer to Section 6 Lesson 1. 24. What is the output of the following segment of code if the command line arguments are "a b c d e f g"?


f e (*) c d This code doesn't compile. Incorrect. Refer to Section 6 Lesson 1. 25. Suppose you misspell a method name when you call it in your program. Which of the following explains why this gives you an exception?

Because the parameters of the method were not met. Because the interpreter does not recognize this method since it was


never initialized, the correct spelling of the method was initialized. Because the interpreter tries to read the method but when it finds the method you intended to use it crashes. This will not give you an exception, it will give you an error when the program is compiled. (*) Incorrect. Refer to Section 6 Lesson 3. 26. Of the option s below, what is the fastest runtime?


n n^2 lg(n) (*) n*lg(n) Incorrect. Refer to Section 6 Lesson 2. 27. Selection sort is efficient for large arrays. True or false?


True False (*) Correct 28. Binary searches can be performed on sorted and unsorted data. True or false?


True False (*) Correct

29. A sequntial search is an iteration through the array that stops at the index where the desired element is found. True or false?


True (*) False Correct

Section 7 (Answer all questions in this section) 30. What is the Java Applet?


(Choose all correct answers) It is the virtual machine that translates Java code into a representation that the computer can understand. A web-based Java program that is embedded into a web browser. (*) A graphic visual included in Java. (*) There is no such thing as a Java Applet. Incorrect. Refer to Section 7 Lesson 4. 31Why is . it not possibl e to extend more than one class at a time in an inherit ance hierarc hy chain?


It is not necessary considering all public content is ed from super class to subclass and further to their subclass and that subclass' subclass and so on. (*) Because the computer cannot handle code that complex.

To prevent confusion for the programmer. It is possible to extend more than one class at a time. Incorrect. Refer to Section 7 Lesson 4. 32. Which of the following correctly describes an "is-a" relationship?


A helpful term used to conceptualize the relationships among nodes or leaves in an inheritance hierarchy. (*) A programming philosophy that promotes simpler, more efficient coding by using exiting code for new applications. It restricts access to a specified segment of code. A programming philosophy that promotes protecting data and hiding implementation in order to preserve the integrity of data and methods. Correct 33. Which of the following is the correct way to call an overriden method needOil() of a super class Robot in a subclass SqueakyRobot?


Robot.needOil(SqueakyRobot); SqueakyRobot.needOil(); super.needOil(); (*) needOil(Robot); Incorrect. Refer to Section 7 Lesson 4. 34. It is possible to overload a method that is not a constructor. True or False?


True (*) False Correct 35. Identify the error(s) in the class below. Choose all that apply.


(Choose all correct answers) No method named min is defined. (*) Two methods cannot have the same name. The parameters must be the same for all methods with the same name. Private cannot be used as an access modifier. Final cannot be used as an access modifier. Incorrect. Refer to Section 7 Lesson 2. 36. Which of the followin g could be a reason to return an object?


Because you wish to be able to use that object inside of the method. It has faster performance than returning a primitive type. The method makes changes to the object and you wish to continue to use the updated object outside of the method. (*) None of the above. It is not possible to return an object.

Incorrect. Refer to Section 7 Lesson 2. 37. Which of the following is the definition for a variable argument method?


A way to create a new class. Specifies accessibility to code. Having more than one constructor with the same name but different arguments. A type of argument that enables calling the same method with a different number of arguments. (*) Incorrect. Refer to Section 7 Lesson 2. 38. Which segment of code correctly defines a method that contains two objects of class Tree as parameters?


void bloom(Tree pine, Tree oak) {//code here }; (*) Tree bloom (pine, oak) {//code here }; void bloom, Tree pine, Tree oak {//code here }; None of the above, objects cannot be ed as parameters. Correct 39. Abstract classes cannot implement interfaces. True or false?


True False (*) Incorrect. Refer to Section 7 Lesson 5. 40. What is Polymorphism?


A way of redefining methods with the same return type and parameters. A way to create multiple methods with the same name but different parameters.

A class that cannot be initiated. The concept that a variable or reference can hold multiple types of objects. (*) Incorrect. Refer to Section 7 Lesson 5. 41. It is possibl e to inherit from an abstrac t class. True or false?


True (*) False Correct 42. Static methods can return any object type. True or false?


True (*) False Incorrect. Refer to Section 7 Lesson 3. 43. A non-linear recursive method is less expensive than a linear recursive method. True or false?


True False (*) Incorrect. Refer to Section 7 Lesson 3. 44. Forward thinking helps when creating linear recursive methods. True or false?


True False (*)

Correct 45. What is wrong with the following class declaration?

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class { ; private int number; private String name;; public ; }

Review (1) Points

Classes cannot include strings. Classes cannot include mixed data types. The constructor method has no definition. (*) There is nothing wrong. Incorrect. Refer to Section 7 Lesson 1. 4Which of the following creates an instance of 6the class below? .


ThisClass t=new ThisClass(); ThisClass t; ThisClass t=new ThisClass(3,4); ThisClass t=new ThisClass(5); (*) Incorrect. Refer to Section 7 Lesson 1. 47. A class can only have one constructor. True or false?


True False (*) Incorrect. Refer to Section 7 Lesson 1.

48. Which of the following creates a method that returns a boolean value?


(*)

None of the above. Correct 49. The constructor method must always have at least one parameter. True or false?


True False (*) Incorrect. Refer to Section 7 Lesson 1. 50. Identify the driver class that correctly initializes employees Jane and Brandon. The Employee class is below. public class Employee { private String name; private int age; private double salary; public Employee(String n, int a, double s) { name = n; age = a; salary = s; } //methods for this class would go here } public class driver_class { public static void main(String[] args) { Employee Jane = new Employee("Jane", 48, 35.00); Employee Brandon = new Employee("Brandon", 36, 20.00); } } (*) public class driver_class { public static void main(String[] args) { Employee("Jane", 48, 35.00); Employee("Brandon", 36, 20.00); } } public class driver_class { public Employee{ Jane = new Employee("Jane", 48, 35.00); Brandon = new Employee("Brandon", 36, 20.00); } } public class Employee { public class driver-class{ Employee Jane = new Employee(); Employee Brandon = new Employee(); } } Incorrect. Refer to Section 7 Lesson 1.


Test: Java Fundamentals Final Exam Review your answers, , and question scores below. An asterisk (*) indicates a correct answer. Section 4 (Answer all questions in this section) 1Match each of the following literals ('x', 10, 10.2, 100L, "hello") with its . respective data type.


char, int, double, long, String (*) boolean, byte, int, long, Short char, int, long, float, String char, boolean, float, long, String char, double, int, long, String Incorrect. Refer to Section 4 Lesson 3. 2Which of the following is the name of a Java primitive data type? .


Object Rectangle double (*) String Incorrect. Refer to Section 4 Lesson 3. 3Which of the following defines an object class? .


Contains a main method and other static methods. Contains classes that define objects. (*)

Contains a main method, a package, static methods, and classes that define objects. None of the above. Incorrect. Refer to Section 4 Lesson 2. 4Which of the two diagrams below illustrate the general form of a Java . program?


Example A Example B (*)

Incorrect. Refer to Section 4 Lesson 2. 5The == operator tests if two String references are pointing to the same . String object. True or false?


True (*) False Incorrect. Refer to Section 4 Lesson 4. 6The . followin g code is an example of creating a String reference :


String s; True or false? True (*) False Incorrect. Refer to Section 4 Lesson 4. 7. Given the code String s1 = "abcdef"; String s2 = "abcdef"; String s3 = new String(s1); Which of the following would equate to false? s1 == s2 s1 = s2 s3 == s1 (*)


s1.equals(s2) s3.equals(s1) Correct 8. Consider the following code snippet.


What is printed? 0 1 (*) 2 11 12 Incorrect. Refer to Section 4 Lesson 4. 9. The String methods equals and compareTo perform similar functions and differ in their return type. True or false?


True (*) False Incorrect. Refer to Section 4 Lesson 4. 10. A workspace is:


The physical location onto which you will store and save your files. The location where all projects are developed and modified. The location where you can have one or more stored perspectives. All of the above. (*) Incorrect. Refer to Section 4 Lesson 1.

11. A perspective is described as:

Mark for Review (1) Points A combination of views and editors (*) A combination of views and windows A combination of editor tabs None of the above Correct

12. When you open more than one file in Eclipse the system will __________________.


Close the previously opened file. Use tabs to display all files open. (*) Put the new file opened in a View area only. None of the above. Incorrect. Refer to Section 4 Lesson 1. 13. What symbols are required for a compiler to ignore a comment?


// (*) /* */ /*/ Incorrect. Refer to Section 4 Lesson 1. 14. A combination of views and editors are referred to as _______________.


A workspace A physical location A perspective (*)

All of the above Correct

Section 5 (Answer all questions in this section) 15. Which of the following correctly matches the switch statement keyword to its function?


(Choose all correct answers) switch: tells the compiler the value to compare the input against default: signals what code to execute if the input does not match any of the cases (*) case: signals what code is executed if the input matches the specified element (*) if: records the 's input and sends it to the case statements to find a possible match switch: identifies what element will be compared to the element of the case statements to find a possible match (*) Incorrect. Refer to Section 5 Lesson 1. 16. switch statements work on all input types including, but not limited to, int, char, and String. True or false?



17. The three logic operators in Java are:


&&, ||, ! (*) !=,=,== &&,!=,= &,|,= Correct 18. Which of the following is true about a do-while loop?


It is a post-test loop. It is a modified while loop that allows the program to run through the loop once before testing the boolean condition. It continues looping until the condition becomes false. All of the above. (*) Incorrect. Refer to Section 5 Lesson 2. 19. A counter used in a for loop cannot be initialized within the For loop header. True or false?


True False (*) Correct 20. In the code fragment below, the syntax for the for loop's initialization is correct. True or false? public class ForLoop { public static void main (String args[]) { for ((int 1=10) (i<20) (i++))
{System.out.Println ("i: "+i); } }


} True False (*) Incorrect. Refer to Section 5 Lesson 2. 21. Which of the following is the correct lexicographical order for the conents of the int array?


{17, 1, 1, 83, 50, 28, 29, 3, 71, 22} {71, 1, 3, 28,29, 50, 22, 83, 1, 17} {83, 71, 50, 29, 28, 22, 17, 3, 1, 1} {1, 1, 17, 22, 28, 29, 3, 50, 71, 83} {1, 2, 7, 0, 9, 5, 6, 4, 8, 3} {1, 1, 3, 17, 22, 28, 29, 50, 71, 83} (*) Correct 22. Selection sort is efficient for large arrays. True or false?


True False (*) Incorrect. Refer to Section 6 Lesson 2. 23. Of the options below, what is the fastest run-time?


n n^2 lg(n) (*)

n*lg(n) Incorrect. Refer to Section 6 Lesson 2. 24. Why might a sequential search be inefficient?


It utilizes the "divide and conquer" method, which makes the algorithm more error prone. It requires incrementing through the entire array in the worst case, which is inefficient on large data sets. (*) It involves looping through the array multiple times before finding the value, which is inefficient on large data sets. It is never inefficient. Incorrect. Refer to Section 6 Lesson 2. 25. Which of the following declares a one dimensional array named names of size 8 so that all entries can be Strings?


String names=new String[8]; String[] name=new Strings[8]; String[] names=new String[8]; (*) String[] name=String[8]; Incorrect. Refer to Section 6 Lesson 1. 26Which of . the following declares and initializes a one dimension al array named words of


size 3 so that all entries can be Strings? String strings=new String[3]; String[] word={"Over","the","mountain"}; (*) String[] word=new String[3]; String[] words={"Oracle","Academy"}]; Incorrect. Refer to Section 6 Lesson 1. 27. The following array declaration is valid. True or false? int k[] = new int[10];


True (*) False Incorrect. Refer to Section 6 Lesson 1. 28. What will be the content of the array variable table after executing the following code?


111 011 001 100 010 001 100 110 1 1 1 (*) 001 010 100

Correct 29. It is possible to throw and catch a second exception inside a catch block of code. True or false?


True (*) False Incorrect. Refer to Section 6 Lesson 3.

Section 7 (Answer all questions in this section) 30. The following statement compiles and executes. What do you know for certain?


tree.grows(numFeet); numFeet must be an int. tree must be the name of the class. grows must be the name of an instance field. grows must be the name of a method. (*) tree must be a method. Correct 3The basic 1.unit of encapsulat ion in Java is the primitive data type. True or false?



32. Instance variable names may only contain letters and digits. True or false?


True False (*) Incorrect. Refer to Section 7 Lesson 1. 33. A class can only have one constructor. True or false?


True False (*) Incorrect. Refer to Section 7 Lesson 1. 34. What is the output of the following code segment: int n = 13; System.out.print(doNothing(n)); System.out.print(" ", n);


where the code from the method doNothing is: public double doNothing(int n) { n = n + 8; return (double) 12/n; } 1.75, 13 0.571, 21 1.75, 21 0.571, 13 (*) Incorrect. Refer to Section 7 Lesson 1. 35. What value will return for j when the setValue method is called?

Mark for Review

(1) Points

31 32 10 11 (*) Incorrect. Refer to Section 7 Lesson 1. 36.Static methods can write to class variables. True or false?


True (*) False Incorrect. Refer to Section 7 Lesson 3. 37. Static methods can read instance variables. True or false?



38. Static methods can't act like "setter" methods. True or false?


True False (*) Correct 39. If a class is immutable then it must be abstract. True or false?


True False (*) Incorrect. Refer to Section 7 Lesson 5. 40. Which of the following can be declared final?


Classes Methods Local variables Method parameters All of the above (*) Incorrect. Refer to Section 7 Lesson 5. 41.Consider the following method of the class Test: public static List returnList(List list) { return list; } Which of the following program segments in


Test's client class will compile with no errors? I. List nums = new ArrayList(); nums = Test.returnList(nums); II. ArrayList nums = new ArrayList(); nums = Test.returnList(nums); III. ArrayList nums1 = new ArrayList(); List nums2 = Test.returnList(nums1); I only I and III (*) II only II and III I, II, and III Incorrect. Refer to Section 7 Lesson 5. 42. Why are hierarchies useful for inheritance?


They keep track of where you are in your program. They restrict a superclass to only have one subclass. They organize constructors and methods in a simplified fashion. They are used to organize the relationship between a superclass and its subclasses. (*) Incorrect. Refer to Section 7 Lesson 4.

43. If a variable in a superclass is private, could it be directly accessed or modified by a subclass? Why or why not?


Yes. A subclass inherits full access to all contents of its super class. Yes. Any variable ed through inheritance can be changed, but private methods cannot. No. A private variable can only be modified by the same class with which it is declared regardless of its inheritance. (*) No. Nothing inherited by the super class can be changed in the subclass. Correct 44. It is possible for a subclass to be a superclass. True or false?


True (*) False Incorrect. Refer to Section 7 Lesson 4. 45. If you inherit a class, you do not inherit the class' constructors. True or false?


True (*) False Correct 4Which 6.of the follow ing is the definit ion for a variabl


e argum ent metho d? A way to create a new class. Specifies accessibility to code. Having more than one constructor with the same name but different arguments. A type of argument that enables calling the same method with a different number of arguments. (*) Incorrect. Refer to Section 7 Lesson 2. 47. Which of the following is the definition of a constructor?


A keyword that specifies accessibility of code. A special method that is used to assign initial values to instance variables in a class. (*) A way to call a method with a variable number of arguments using an elipse. A variable in a method declaration that gets ed into the method. Correct 48. Which of the following could be a reason to return an object?


Because you wish to be able to use that object inside of the method. It has faster performance than returning a primitive type. The method makes changes to the object and you wish to continue to use the updated object outside of the method. (*) None of the above. It is not possible to return an object. Incorrect. Refer to Section 7 Lesson 2.

49. Identify the error(s) in the class below. Choose all that apply.


(Choose all correct answers) No method named min is defined. (*) Two methods cannot have the same name. The parameters must be the same for all methods with the same name. Private cannot be used as an access modifier. Final cannot be used as an access modifier. Incorrect. Refer to Section 7 Lesson 2. 50. Which of the following is the correct way to code a method with a return type an object Automobile?


Automobile upgrade(String carA){ carA="Turbo"; return carA;} Automobile upgrade(Automobile carA){ carA.setTurbo("yes");

return carA;} (*) String upgrade(String carA){ carA="Turbo"; return carA;} upgrade(Automobile carA) Automobile{ carA.setTurbo("yes"); return carA;} None of the above. It is not possible to return an object. Correct 1. Suppose that str1 and str2 are two strings. Which of the statemen ts or expressio ns are valid?


String str3 = str1 - str2; str1 += str2; (*) str1 >= str2 Str1 -= str2; Incorrect. Refer to Section 4 Lesson 4. 2. The following program prints "Not Equal". True or false?


True False (*) Incorrect. Refer to Section 4 Lesson 4. 3. When a String object is created it must be assigned a value. True or false?

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Review (1) Points True False (*) Incorrect. Refer to Section 4 Lesson 4. 4. Which of the following creates a String reference named s and instantiates it?


(Choose all correct answers) String s=""; (*) s="s"; String s; String s=new String("s"); (*) Incorrect. Refer to Section 4 Lesson 4. 5. What is printed by the following code segment?


\\\\ \\\\\\\ (*) \\\\\\\\\\\\\\ \\ Correct 6. Which line of Java code properly calculates the area of a triangle using A=1/2(b)(h) where b and h are Java primitive integers?


double A=1/2*b*h; double A=1/2bh; double A=(double)1/(double)2*b*h; (*) double A=(double)(1/2)*b*h; Incorrect. Refer to Section 4 Lesson 3. 7. What are Java's primitive types?


boolean, byte, char, double, float, int, long, and short (*) boolean, byte, string, thread, int, double, long and short object, byte, string, char, float, int, long and short boolean, thread, stringbuffer, char, int, float, long and short boolean, thread, char, double, float, int, long and short Incorrect. Refer to Section 4 Lesson 3. 8. Which of the following defines a driver class?


Contains a main method and other static methods. (*) Contains classes that define objects. Contains a main method, a package, static methods, and classes that define objects. None of the above. Incorrect. Refer to Section 4 Lesson 2. 9. The following defines a package keyword:


Defines where this class lives relative to other classes, and provides a level of access control. (*) Provides the compiler information that identifies outside classes used within the current class. Precedes the name of the class. Incorrect. Refer to Section 4 Lesson 2.

10. A _______________ is used to organize Java related files.


Project Workspace Package (*) Collection Incorrect. Refer to Section 4 Lesson 1. 11. For every opening curly brace { there does not need to be a closing curly brace} for the program to compile without error. True or False?


True False (*) Correct 12. You can return to the Eclipse Welcome Page by choosing Welcome from what menu?


File Edit Help (*) Close

Incorrect. Refer to Section 4 Lesson 1. 13. Four variables are required to a conversion of one unit of measure to another unit of measure. True or False?


True False (*) Incorrect. Refer to Section 4 Lesson 1. 14. When converting gallons to liters its best to put the calculation result into a variable with a _______________ data type.


int double (*) boolean None of the above Correct

Section 5 (Answer all questions in this section) 15. How many times will the following loop be executed? What is the value of x after the loop has finished? What is the value of count after the loop has finished?


int count = 17; int x = 1; while(count > x){ x*=3; count-=3; } 4; 8; 27 3; 27; 8 (*) 5; 27; 8 5; 30; 5 3; 9; 11 Correct

16. Why are loops usefu l?


They save programmers from having to rewrite code. They allow for repeating code a variable number of times. They allow for repeating code until a certain argument is met. All of the above. (*) Incorrect. Refer to Section 5 Lesson 2. 17. What should replace the comment "//your answer here" in the code below if the code is meant to take no action when i % 2 is 0 (in other words when i is even)? for(int i = 0; i < 10; i++){
if(i%2 == 0) //your answer here else k+=3; }


continue; (*) break; return; k+=1; Correct 18. Consider that a Scanner has been initialized such that:

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Scanner in = new Scanner(System.in); Which of the following lines of code reads in the 's input and sets it equal to a new String called input?

Review (1) Points

String input = in.next(); (*) String input = in.close(); String input = new String in.next(); String input = in.nextInt(); Incorrect. Refer to Section 5 Lesson 1. 19. The following prints Yes on the screen. True or false?


True False (*) Correct 20. The six relational operators in Java are:


>,<,=,!,<=,>= >,<,==,!=,<=,>= (*) >,<,=,!=,<=,>= >,<,=,!=,=<,=> Correct 21The . followi ng create sa referen ce in memor y named q that can refer to six differe nt integer s via an index. True or false?


int[] q = new int[8]; True False (*)

Correct 22. double array[] = new double[8];

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After execution of this statement, which of the following are true? Review (1) Points array[0] is undefined array[4] is null array[2] is 8 array.length is 8 (*) Incorrect. Refer to Section 6 Lesson 1. 23. The following creates a reference in memory named q that can refer to eight different doubles via an index. True or false? double[] q = new double[8];


True (*) False Correct 24. The following segment of code prints all five of the command line arguments entered into this program. True or false?


True False (*) Incorrect. Refer to Section 6 Lesson 1. 25. Which of the following sorting algorithms utilizes a "divide and conquer" technique to sort arrays with optimal speed?


Sequential Search Merge Sort (*) Selection Sort

Binary Search All of the above Incorrect. Refer to Section 6 Lesson 2. 26. Which searchin g algorith m involves using a low, middle, and high index value to find the location of a value in a sorted set of data (if it exists)?


Sequential Search Merge Sort Selection Sort Binary Search (*) All of the above Correct 27. Binary searches can be performed on sorted and unsorted data. True or false?


True False (*) Incorrect. Refer to Section 6 Lesson 2. 28. Selection sort is efficient for large arrays. True or false?


True

False (*) Correct 29. If an exception has already been thrown, what will the interpreter read next in the program?


The next line of the program even if it is not the catch block of code. Where the program catches the exception. (*) The end of the program. The input. Incorrect. Refer to Section 6 Lesson 3.

Section 7 (Answer all questions in this section) 30. Which of the following could be a reason to return an object?


Because you wish to be able to use that object inside of the method. It has faster performance than returning a primitive type. The method makes changes to the object and you wish to continue to use the updated object outside of the method. (*) None of the above. It is not possible to return an object. Incorrect. Refer to Section 7 Lesson 2. 31. It is possibl e to return an object from a method . True or false?


True (*) False

Incorrect. Refer to Section 7 Lesson 2. 32. It is possible to overload a method that is not a constructor. True or False?


True (*) False Correct 33. Which of the following is the correct way to code a method with a return type an object Automobile?


Automobile upgrade(String carA){ carA="Turbo"; return carA;} Automobile upgrade(Automobile carA){ carA.setTurbo("yes"); return carA;} (*) String upgrade(String carA){ carA="Turbo"; return carA;} upgrade(Automobile carA) Automobile{ carA.setTurbo("yes"); return carA;} None of the above. It is not possible to return an object. Correct 34. Which segment of code represents a correct way to define a variable argument method?


String easyArray(String ... elems) {//code} (*) String easyArray(... String elems) {//code} String ... easyArray(String elems) {//code} Integer easyArray ... (int elems) {//code} Incorrect. Refer to Section 7 Lesson 2. 35. What is true about the code below: Car car1=new Car(); Car car2=new Car(); car2=car1;


(Choose all correct answers) The references car1 and car2 are pointing to two Car Objects in memory. The reference car2 points to an exact copy of the Car Object that car1 references. (*) There are no more Car objects in memory. There is a Car object that car1 referenced that is now slated for removal by the garbage collector. There is a Car object that car2 referenced that is now slated for removal by the garbage collector. (*) Incorrect. Refer to Section 7 Lesson 1. 36The following . statement compiles and executes. What do you know for certain?


tree.grows(nu mFeet); numFeet must be an int. tree must be the name of the class. grows must be the name of an instance field. grows must be the name of a method. (*) tree must be a method. Incorrect. Refer to Section 7 Lesson 1. 37. The basic unit of encapsulation in Java is the primitive data type. True or false?


True False (*) Correct 38. The following code creates an object of type Animal. True or false?

Mark for

Animal a=new Animal(); Review (1) Points True (*)

False Incorrect. Refer to Section 7 Lesson 1. 39. What is the output of the following code segment: int n = 13; System.out.print(doNothing(n)); System.out.print(" ", n);


where the code from the method doNothing is: public double doNothing(int n) { n = n + 8; return (double) 12/n; } 1.75, 13 0.571, 21 1.75, 21 0.571, 13 (*) Incorrect. Refer to Section 7 Lesson 1. 40. Which of the following creates an object from the Animal class listed below:


Animal cat=new Animal(); Animal cat=Animal(50,30); Animal cat=new Animal(50,30); (*) Animal cat=new Animal(50); Incorrect. Refer to Section 7 Lesson 1. 41. A linear recursiv e method directly calls how


many copies of itself in the recursiv e case? 0 1 (*) 2 or more Correct 42. Static methods can't act like "setter" methods. True or false?


True False (*) Correct 43. Any instance of the same class can assign a new value to a static variable. True or false?


True (*) False Correct 44. According to the following class declaration, runSpeed can be modified in class Cat. True or false? public class Tiger extends Cat{ public int runSpeed; }


True False (*) Correct 45. Which of the following correctly describes the use of the keyword super?

Mark for Review

(1) Points A keyword that restricts access to only inside the same class. A keyword that allows subclasses to access methods, data, and constructors from their parent class. (*) A keyword that signals the end of a program. A keyword that allows access from anywhere. Correct 4Consider creating a class Square that extends 6the Rectangle class provided below. Knowing . that a square always has the same width and length, which of the following best represents a constructor for the Square class?


(*) None of the above. Correct

47. What is encapsulation?


A keyword that allows or restricts access to data and methods. A programming philosophy that promotes simpler, more efficient coding by using exiting code for new applications. A structure that categorizes and organizes relationships among ideas, concepts of things with the most general at the top and the most specific at the bottom. A programming philosophy that promotes protecting data and hiding implementation in order to preserve the integrity of data and methods. (*) Incorrect. Refer to Section 7 Lesson 4. 48. If Oak extends Tree, it is possible to declare an object such that Tree grandfatherT = new Oak(); True or false?


True (*) False Correct 49. Identify the step(s) in creating a Triangle Applet that displays two triangles.


(Choose all correct answers) Extend Applet class to inherit all methods including paint. (*) Override the paint method to include the triangles. (*) Draw the triangle using the inherited fillPolygon method. (*) Draw the 2nd triangle using the inherited fillPolygon method. (*)

Run and compile your code. (*) None of the above. Incorrect. Refer to Section 7 Lesson 5. 50. What does it mean to override a method?


It is a way to create multiple methods with the same name but different parameters. It allows an array to contain different object types. It restricts the privacy of the method to only be accessible from inside the same class. It is a way of redefining methods of a parent class inside the child class, with the same name, parameters, and return type. (*) Incorrect. Refer to Section 7 Lesson 5.

1. Given the code: String s = new String("abc"); Which of the following statements will change the length of s to the largest length? Review (1) Points s.trim() s.replace("a", "aa") s.substring(2) s.toUpperCase() None of the above will change the length of s. (*) Correct

Mark for

valid?

2. Suppose that str1 and str2 are two strings. Which of the statements or expressions are Mark for Review

(1) Points String str3 = str1 - str2; str1 += str2; (*) str1 >= str2 Str1 -= str2; Correct 3. Which of the following creates a String named Char? (1) Points char string; String Char; (*) char Char; char char; String char; Correct 4. What will the following code segment output? String s="\\\n\"\n\\\n\""; System.out.println(s); Mark for Review (1) Points \" \" ""\ "" \ "" \ " \

Mark for Review

" (*) " \ " \ " " Incorrect. Refer to Section 4 Lesson 4. 5. Consider the following code snippet String forest = new String("Black"); System.out.println(forest.length()); What is printed?

Mark for Review

(1) Points 5 (*) 6 7 Black Forest Incorrect. Refer to Section 4 Lesson 4. 6. Given the following declaration, which line of Java code properly casts one type into another without data loss? int i=3,j=4; double y=2.54; (1) Points int x=(double)2.54; double x=i/j; double x=(double)(i/j); double x= double i/j;

Mark for Review

double x=(double)i/j; (*) Incorrect. Refer to Section 4 Lesson 3. 7. What two values can a boolean variable have?

Mark for Review

(1) Points Numbers and characters True and false (*) Relational and logic operators Arithmetic and logic operators Integers and floating point types Incorrect. Refer to Section 4 Lesson 3. 8. Which of the following defines a driver class?

Mark for Review

(1) Points Contains a main method and other static methods. (*) Contains classes that define objects. Contains a main method, a package, static methods, and classes that define objects. None of the above. Incorrect. Refer to Section 4 Lesson 2. 9. Which of the following defines an object class?

Mark for Review

(1) Points Contains a main method and other static methods. Contains classes that define objects. (*) Contains a main method, a package, static methods, and classes that define objects. None of the above. Incorrect. Refer to Section 4 Lesson 2.

10. In the image below, identify the components.

Mark for Review (1) Points A-Main Method, B-Class, C-Package A-Class, B-MainMethod, C-Package A-Package, B-Main Method, C-Class (*) None of the above Incorrect. Refer to Section 4 Lesson 1. 11. You can return to the Eclipse Welcome Page by choosing Welcome from what menu? Mark for Review (1) Points File Edit Help (*) Close Incorrect. Refer to Section 4 Lesson 1.

False?

12. Multiple windows are used when more than one file is open in the edit area. True or Mark for Review

(1) Points True False (*) Incorrect. Refer to Section 4 Lesson 1. 13. What is the purpose of the Eclipse Editor Area and Views?

Mark for Review

(1) Points (Choose all correct answers) To modify elements. (*) To navigate a hierarchy of information. (*) To choose the file system location to delete a file. Incorrect. Refer to Section 4 Lesson 1. 14. In Eclipse, when you run a Java Application, the results are displayed in a new window. True or False? Mark for Review (1) Points True False (*) Correct Section 5 (Answer all questions in this section) 15. What should replace the comment "//your answer here" in the code below if the code is meant to take no action when i % 2 is 0 (in other words when i is even)? for(int i = 0; i < 10; i++){
if(i%2 == 0) //your answer here else k+=3; } Mark for Review (1) Points continue; (*) break; return;

k+=1; Incorrect. Refer to Section 5 Lesson 2. 16. Updating the input of a loop allows you to implement the code with the next element rather than repeating the code always with the same element. True or false? Mark for Review (1) Points True (*) False Incorrect. Refer to Section 5 Lesson 2. 17. When the for loop condition statement is met the construct is exited. True or false? Mark for Review (1) Points True False (*) Incorrect. Refer to Section 5 Lesson 2. 18. Consider that a Scanner has been initialized such that: Scanner in = new Scanner(System.in); Which of the following lines of code reads in the 's input and sets it equal to a new String called input? Mark for Review (1) Points String input = in.next(); (*) String input = in.close(); String input = new String in.next(); String input = in.nextInt(); Incorrect. Refer to Section 5 Lesson 1. 19. How would you use the ternary operator to rewrite this if statement? if (gender == "female") System.out.print("Ms."); else

System.out.print("Mr.");

Mark for Review

(1) Points System.out.print( (gender == "female") ? "Mr." : "Ms." ); System.out.print( (gender == "female") ? "Ms." : "Mr." ); (*) (gender == "female") ? "Mr." : "Ms." ; (gender == "female") ? "Ms." : "Mr." ; Correct 20. switch statements work on all input types including, but not limited to, int, char, and String. True or false? Mark for Review (1) Points True False (*) Incorrect. Refer to Section 5 Lesson 1. 21. It is possible to throw and catch a second exception inside a catch block of code. True or false? Mark for Review (1) Points True (*) False Correct 22. The following segment of code initializes a 2 dimensional array of primitive data types. True or false? double[][] a=new double[4][5];

Mark for Review

(1) Points True (*) False Incorrect. Refer to Section 6 Lesson 1. 23. What will be the content of the array variable table after executing the following code?

Mark for Review (1) Points 111 011 001 100 010 001 100 110 1 1 1 (*) 001 010 100 Incorrect. Refer to Section 6 Lesson 1. 24. What is the output of the following segment of code?

Mark for Review (1) Points 321123 642 642246 (*) 312213 This code doesn't compile.

Correct 25. What is the output of the following segment of code? int array[][] = {{1,2,3},{3,2,1}}; for(int i=0;i<2;i++) for(int j=0;j<3;j++) System.out.print(2*array[1][1]);

Mark for Review

(1) Points 444444 (*) 123321 246642 222222 This code doesn't compile. Incorrect. Refer to Section 6 Lesson 1. 26. Of the options below, what is the fastest run-time?

Mark for Review

(1) Points n n^2 lg(n) (*) n*lg(n) Incorrect. Refer to Section 6 Lesson 2. 27. Which of the following is the correct lexicographical order for the conents of the int array? {17, 1, 1, 83, 50, 28, 29, 3, 71, 22} (1) Points {71, 1, 3, 28,29, 50, 22, 83, 1, 17} {83, 71, 50, 29, 28, 22, 17, 3, 1, 1}

Mark for Review

{1, 1, 17, 22, 28, 29, 3, 50, 71, 83} {1, 2, 7, 0, 9, 5, 6, 4, 8, 3} {1, 1, 3, 17, 22, 28, 29, 50, 71, 83} (*) Incorrect. Refer to Section 6 Lesson 2. 28. Selection sort is efficient for large arrays. True or false?

Mark for Review

(1) Points True False (*) Incorrect. Refer to Section 6 Lesson 2. 29. Selection sort is a sorting algorithm that involves finding the minimum value in the list, swapping it with the value in the first position, and repeating these steps for the remainder of the list. True or false? Mark for Review (1) Points True (*) False Correct Section 7 (Answer all questions in this section) implementation of a public access modifier for the method divide.

30. Choose the correct Mark for Review

(1) Points divide(int a, int b, public) {return a/b;} public divide(int a, int b) {return a/b;} (*) divide(int a, int b) {public return a/b;} divide(public int a, public int b) {return a/b;} Incorrect. Refer to Section 7 Lesson 2. 31. Which of the following could be a reason to return an object?

Mark for Review

(1) Points Because you wish to be able to use that object inside of the method.

It has faster performance than returning a primitive type. The method makes changes to the object and you wish to continue to use the updated object outside of the method. (*) None of the above. It is not possible to return an object. Incorrect. Refer to Section 7 Lesson 2. 32. Which of the following is the correct way to code a method with a return type an object Automobile? Mark for Review (1) Points Automobile upgrade(String carA){ carA="Turbo"; return carA;} Automobile upgrade(Automobile carA){ carA.setTurbo("yes"); return carA;} (*) String upgrade(String carA){ carA="Turbo"; return carA;} upgrade(Automobile carA) Automobile{ carA.setTurbo("yes"); return carA;} None of the above. It is not possible to return an object. Correct 33. It is possible to overload a method that is not a constructor. True or False? for Review (1) Points True (*) False Correct 34. Identify the error(s) in the class below. Choose all that apply.

Mark

Mark for Review (1) Points (Choose all correct answers) No method named min is defined. (*) Two methods cannot have the same name. The parameters must be the same for all methods with the same name. Private cannot be used as an access modifier. Final cannot be used as an access modifier. Incorrect. Refer to Section 7 Lesson 2. 35. What is the Java Applet? Mark for Review (1) Points (Choose all correct answers) It is the virtual machine that translates Java code into a representation that the computer can understand. A web-based Java program that is embedded into a web browser. (*) A graphic visual included in Java. (*)

There is no such thing as a Java Applet. Correct 36. Why are hierarchies useful for inheritance?

Mark for Review

(1) Points They keep track of where you are in your program. They restrict a superclass to only have one subclass. They organize constructors and methods in a simplified fashion. They are used to organize the relationship between a superclass and its subclasses. (*) Correct 37. Which of the following correctly describes an "is-a" relationship?

Mark for

Review (1) Points A helpful term used to conceptualize the relationships among nodes or leaves in an inheritance hierarchy. (*) A programming philosophy that promotes simpler, more efficient coding by using exiting code for new applications. It restricts access to a specified segment of code. A programming philosophy that promotes protecting data and hiding implementation in order to preserve the integrity of data and methods. Incorrect. Refer to Section 7 Lesson 4. 38. Why is it not possible to extend more than one class at a time in an inheritance hierarchy chain? Mark for Review (1) Points It is not necessary considering all public content is ed from super class to subclass and further to their subclass and that subclass' subclass and so on. (*) Because the computer cannot handle code that complex. To prevent confusion for the programmer. It is possible to extend more than one class at a time.

Correct 39. The following code creates an object of type Horse: Whale a=new Whale(); Mark for Review (1) Points True False (*) Correct 40. A constructor is used to create objects. True or false?

Mark for Review

(1) Points True (*) False Correct 41. The constructor method must always have at least one parameter. True or false?

Mark for

Review (1) Points True False (*) Correct 42. The basic unit of encapsulation in Java is the primitive data type. True or false? Mark for Review (1) Points True False (*) Incorrect. Refer to Section 7 Lesson 1. 43. What is true about the code below: Car car1=new Car(); Car car2=new Car(); car2=car1;

Mark for Review (1) Points (Choose all correct answers) The references car1 and car2 are pointing to two Car Objects in memory. The reference car2 points to an exact copy of the Car Object that car1 references. (*) There are no more Car objects in memory. There is a Car object that car1 referenced that is now slated for removal by the garbage collector. There is a Car object that car2 referenced that is now slated for removal by the garbage collector. (*) Incorrect. Refer to Section 7 Lesson 1. 44. The following code creates an object of type Animal. True or false? Animal a=new Animal();

Mark for Review

(1) Points True (*) False Correct 45. If an abstract class does not have implemented constructors or methods, it should be implemented as an interface instead. True or false? Mark for Review (1) Points True (*) False Incorrect. Refer to Section 7 Lesson 5. 46. Abstract class cannot extend another abstract class. True or false? (1) Points True False (*) Incorrect. Refer to Section 7 Lesson 5.

Mark for Review

47. Which of the following can be declared final?

Mark for Review

(1) Points Classes Methods Local variables Method parameters All of the above (*) Correct 48. A non-linear recursive method calls how many copies of itself in the recursive case? Mark for Review (1) Points 0 1 2 or more (*) Correct 49. Static classes can extend their parent class. True or false?

Mark for Review

(1) Points True (*) False Incorrect. Refer to Section 7 Lesson 3. 50. Static methods can write to instance variables. True or false? (1) Points True False (*) Correct

Mark for Review

Test: Java Fundamentals Final Exam Review your answers, , and question scores below. An asterisk (*) indicates a correct answer. Section 4 (Answer all questions in this section)

1. The String methods equals and compareTo perform similar functions and differ in thei

True (*) False Correct 2. Consider the following code snippet.

What is printed? 88888 (*) 88888888 1010778 101077810109 ArrayIndexOutofBoundsException is thrown Incorrect. Refer to Section 4 Lesson 4. 3. What is printed by the following code segment?

alligator (*) albatross alligator albatross a1 Correct 4. Which of the following creates a String named Char?

char string; String Char; (*) char Char; char char; String char; Incorrect. Refer to Section 4 Lesson 4. 5. The following program prints "Not Equal":

True or false? True (*) False Correct Page 1 of 10

Test: Java Fundamentals Final Exam Review your answers, , and question scores below. An asterisk (*) indicates a correct answer. Section 4 (Answer all questions in this section) 6. Which of the following statements displays 12345? I. System.out.println( 123 * 100 + 45); II. System.out.println("123" + 45); III. System.out.println( 12 + "345"); All of the above. (*) I only. I and II only. II and III only. None of the above. Incorrect. Refer to Section 4 Lesson 3. 7. What are Java's primitive types?

boolean, byte, char, double, float, int, long boolean, byte, string, thread, int, double, lo object, byte, string, char, float, int, long an boolean, thread, stringbuffer, char, int, floa boolean, thread, char, double, float, int, lon Correct 8. What is the purpose of the Eclipse Editor Area and Views?

(Choose all correct answers)

To modify elements. (*) To navigate a hierarchy of information. (*) To choose the file system location to delete Incorrect. Refer to Section 4 Lesson 1.

9. You can return to the Eclipse Welcome Page by choosing Welcome from

File Edit Help (*) Close Incorrect. Refer to Section 4 Lesson 1.

10. Multiple windows are used when more than one file is open in the edit a

True False (*) Correct Page 2 of 10


11. A perspective is described as:

A combination of views and editors (*) A combination of views and windows A combination of editor tabs None of the above Incorrect. Refer to Section 4 Lesson 1.

12. When you open more than one file in Eclipse the system will _________

Close the previously opened file. Use tabs to display all files open. (*) Put the new file opened in a View area onl None of the above. Incorrect. Refer to Section 4 Lesson 1. 13. The following defines an import keyword:

Defines where this class lives relative to ot Provides the compiler information that ide Precedes the name of the class. Incorrect. Refer to Section 4 Lesson 2. 14. Which of the following defines an object class?

Contains a main method and other static m Contains classes that define objects. (*) Contains a main method, a package, static None of the above. Incorrect. Refer to Section 4 Lesson 2.

Section 5 (Answer all questions in this section) 15. Why are loops useful?

They save programmers from having to re They allow for repeating code a variable n They allow for repeating code until a certa All of the above. (*) Incorrect. Refer to Section 5 Lesson 2. Page 3 of 10


16. A counter used in a for loop cannot be initialized within the For loop header. T


17. In a for loop the counter is not automatically incremented after each loop itera

True (*) False Correct 18. How would you use the ternary operator to rewrite this if statement? if (gender == "female") System.out.print("Ms."); else System.out.print("Mr.");

System.out.print( (gender == "female") ? "Mr." : System.out.print( (gender == "female") ? "Ms." : (gender == "female") ? "Mr." : "Ms." ; (gender == "female") ? "Ms." : "Mr." ; Correct

19. switch statements work on all input types including, but not limited to, int, cha


20. Which of the two diagrams below illustrate the correct syntax for variables us

Example A (*) Example B Incorrect. Refer to Section 5 Lesson 1. Page 4 of 10


21. Suppose you misspell a method name when you call it in your program.

Because the parameters of the method wer Because the interpreter does not recognize Because the interpreter tries to read the me This will not give you an exception, it will Incorrect. Refer to Section 6 Lesson 3.

22. Which of the following sorting algorithms utilizes a "divide and conque

Sequential Search Merge Sort (*) Selection Sort Binary Search All of the above Incorrect. Refer to Section 6 Lesson 2.

23. Big-O Notation is used in Computer Science to describe the performanc

True (*) False Incorrect. Refer to Section 6 Lesson 2. 24. Why might a sequential search be inefficient?

It utilizes the "divide and conquer" method It requires incrementing through the entire It involves looping through the array multi It is never inefficient.

Incorrect. Refer to Section 6 Lesson 2.

25. Selection sort is a sorting algorithm that involves finding the minimum v

True (*) False Correct Page 5 of 10


26. Which of the following declares and initializes a one dimensional array named

String strings=new String[3]; String[] word={"Over","the","mountain"}; (*) String[] word=new String[3]; String[] words={"Oracle","Academy"}]; Incorrect. Refer to Section 6 Lesson 1.

27. The following segment of code prints all five of the command line arguments e

True

False (*) Correct

28. The following creates a reference in memory named q that can refer to six diffe int[] q = new int[8]; True False (*) Incorrect. Refer to Section 6 Lesson 1.

29. The following creates a reference in memory named q that can refer to eight di double[] q = new double[8]; True (*) False Correct

Section 7 (Answer all questions in this section) 30. Forward thinking helps when creating linear recursive methods. True or false?


Test: Java Fundamentals Final Exam

Review your answers, , and question scores below. An asterisk (*) indicates a correct answer. Section 7 (Answer all questions in this section) 31. A static variable is always publicly available. True or false?

True False (*) Correct 32. There is only one copy a static class variable in the JVM. True or false?

True (*) False Correct 33. The following statement compiles and executes. What do you know for tree.grows(numFeet);

numFeet must be an int. tree must be the name of the class. grows must be the name of an instance fiel grows must be the name of a method. (*) tree must be a method. Incorrect. Refer to Section 7 Lesson 1. 34. A constructor is used to create objects. True or false?

True (*) False

Incorrect. Refer to Section 7 Lesson 1.

35. The basic unit of encapsulation in Java is the primitive data type. True o



36. Java's garbage collection is when all references to an object are gone, the memo

True (*) False Correct 37. What value will return for j when the setValue method is called?

31 32 10 11 (*) Incorrect. Refer to Section 7 Lesson 1.

38. Identify the driver class that correctly initializes employees Jane and Brandon. T public class Employee { private String name; private int age; private double salary; public Employee(String n, int a, double s) { name = n; age = a; salary = s; } //methods for this class would go here }

public class driver_class { public static void main(String[] args) { Employee Jane = new Employee("Jane", 48, 35.00 Employee Brandon = new Employee("Brandon", } } (*) public class driver_class { public static void main(String[] args) { Employee("Jane", 48, 35.00); Employee("Brandon", 36, 20.00); }

} public class driver_class { public Employee{ Jane = new Employee("Jane", 48, 35.00); Brandon = new Employee("Brandon", 36, 20.00); } } public class Employee { public class driver-class{ Employee Jane = new Employee(); Employee Brandon = new Employee(); } } Incorrect. Refer to Section 7 Lesson 1. 39. Which of the following can be used as a parameter?

(Choose all correct answers) Integers (*) Strings (*) Constructors Arrays (*) Objects (*) Incorrect. Refer to Section 7 Lesson 2. 40. Which of the following correctly defines overloading?

Having more than one constructor with the same n Having more than one constructor with different n A variable argument method that returns an array. A type of access specifier that only allows access Incorrect. Refer to Section 7 Lesson 2. Page 8 of 10

Test: Java Fundamentals Final Exam Review your answers, , and question scores below. An asterisk (*) indicates a correct answer. Section 7 (Answer all questions in this section) 41. Which of the following is the definition of a constructor?

A keyword that specifies accessibility of code. A special method that is used to assign initial valu A way to call a method with a variable number of A variable in a method declaration that gets ed Incorrect. Refer to Section 7 Lesson 2. 42. Identify the error(s) in the class below. Choose all that apply.

(Choose all correct answers) No method named min is defined. (*) Two methods cannot have the same name. The parameters must be the same for all methods Private cannot be used as an access modifier. Final cannot be used as an access modifier. Incorrect. Refer to Section 7 Lesson 2.

43. Which segment of code represents a correct way to call a variable argument me

counter(String a, int b); counter(int[] numbers); counter(1, 5, 8, 17, 11000005); (*) counter("one","two",String[] nums); Incorrect. Refer to Section 7 Lesson 2.

44. Which of the following show the correct UML representation of the super class

(*)

None of the above. Incorrect. Refer to Section 7 Lesson 4. 45. Which of the following correctly describes an "is-a" relationship?

A helpful term used to conceptualize the relations A programming philosophy that promotes simpler It restricts access to a specified segment of code. A programming philosophy that promotes protecti Incorrect. Refer to Section 7 Lesson 4. Page 9 of 10

Test: Java Fundamentals Final Exam Review your answers, , and question scores below. An asterisk (*) indicates a correct answer. Section 7 (Answer all questions in this section) 46. Why is it not possible to extend more than one class at a time in an inheritance

It is not necessary considering all public content i Because the computer cannot handle code that com To prevent confusion for the programmer. It is possible to extend more than one class at a tim Incorrect. Refer to Section 7 Lesson 4. 47. Where should the constructor for a superclass be called?

Anywhere inside the subclass. Inside the main method of the subclass. The last line in the constructor of the subclass. The first line of the constructor in the subclass. (* The super constructor does not need to be called i Incorrect. Refer to Section 7 Lesson 4.

48. If we override the toString() method with the code below, what would be the re

It would print the array one element at a time. The It would print the string returned from the method It would print the array backwards. The console sc It would print the string returned from the method Incorrect. Refer to Section 7 Lesson 5. 49. Which of the following are true about abstract methods?

(Choose all correct answers)

They cannot have a method body. (*) They must be overridden in a non-abstract subclas They must be declared in an abstract class. (*) They may contain implementation. They must be overloaded. Incorrect. Refer to Section 7 Lesson 5. 50. Abstract classes can be instantiated. True or false?

True False (*) Incorrect. Refer to Section 7 Lesson 5. Page 10 of 10

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