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CS402 Exam 1 Review

Quiz by Elaina Wittmer

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17 questions
Show answers
  • Q1

    The root of the Java Object Hierarchy is Object

    true
    false
    True or False
    15s
  • Q2

    Which of the following is not included when checking for equality? 

    Null check

    Type Check

    Field check

    Method check

    30s
  • Q3

    A java class is stored in which type of file?

    .ctxt

    .j

    .java

    .class

    20s
  • Q4

    ArrayLists can contain Objects or primitive types

    false
    true
    True or False
    30s
  • Q5

    Classes can inherit from multiple parents in Java

    false
    true
    True or False
    20s
  • Q6

    Which of these is a valid way to initialize an empty ArrayList with a size of 400? 

    ArrayList<integer>(400) arrayList = new ArrayList<integer>();

    ArrayList<integer> arrayList = new ArrayList<integer>(400);

    ArrayList<Integer> arrayList = new ArrayList<Integer>(400);

    ArrayList<integer> arrayList = new ArrayList<integer>(400);

    60s
  • Q7

    A class is a blueprint for creating objects

    true
    false
    True or False
    60s
  • Q8

    Group the following into classes and objects

    Users sort answers between categories
    Sorting
    60s
  • Q9

    Private methods can be accessed by other classes in the same directory.

    false
    true
    True or False
    20s
  • Q10

    What is the difference between the size and length of an ArrayList?

    Length = amount of allocated memory, size = number of items in array

    Length = number of items in array, size = amount of allocated memory

    20s
  • Q11

    ArrayLists have a length of 10 by default

    true
    false
    True or False
    20s
  • Q12

    What data type does this method return?

    Question Image

    int

    void

    Rectangle

    ArrayList

    20s
  • Q13

    What is the correct order of sections in a UML diagram (as shown in class)?

    Users link answers
    Linking
    30s
  • Q14

    Java allows multiple methods within a class to have the same name

    true
    false
    True or False
    20s
  • Q15

    Complete the body of this loop to print every odd digit between 0 and 50. Assume integer i has not yet been initialized. 

    for (<fill in this part>) {System.out.println(i);}

    Users enter free text
    Type an Answer
    30s

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