Changing the way you learn

Question 1

Question

What are two parts of ADT?

Answer

Private and Public
ArrayList and Vector
Queue and Stack
Parent and Child
Int and float

Question 2

Question

Which of them has more methods?

Answer

Superclass
Subclass

Question 3

Question

The relationship when one class is a subclass of another is called...

Answer

is-a
has-a

Question 4

Question

The relationship when one class is defined inside the definition of another is called...

Answer

has-a
is-a
is-b
has-b
to-c

Question 5

Question

Redefinition of method of superclass in a subclass with the same name and number of parameters is...

Answer

Override
Overload
Overhead
Upperload
Overbeat

Question 6

Question

Redefinition of method with the same name but different number of parameters is called...

Answer

Overload
Override
Overflow
Upperride
Download

Question 7

Question

If you want to call the constructor of superclass you would use....

Answer

super.
super()
this.
this()
constructor()

Question 8

Question

If you want to call data member of superclass you would use...

Answer

super.
super()
this()
this.
method()

Question 9

Question

If you want to call different constructor of current class you would use...

Answer

this()
this.
super()
super.
current.

Question 10

Question

If there is at least one abstract method in a class, that class is called...

Answer

Abstract class
General class
Recursive class
Tired class
Vanish class

Question 11

Question

If there are no abstract methods in the class we call that class…

Answer

Abstract class
Actual class
Super class
Non Abstract class
Funny class

Question 12

Question

Which part is accessible to user ?

Answer

Public
Private
Protected
Social
Interactive

Question 13

Question

Is it possible to inherit from multiple classes?

Answer

Question 14

Question

Is it possible to implement multiple interfaces?

Answer

Question 15

Question

Every class has _____as a superclass

Answer

Object
JAVA
Subject
Main
String

Question 16

Question

This method returns a string that textually represents an object

Answer

toString()
equals()
toText()
toGo()
hashCode()

Question 17

Question

InstanceOf used to test ...

Answer

Whether an object belongs to class or not
Whether object is object or not
Whether object plays football or not
Whether object has parent or not
Whether is the biggest object or not

Question 18

Question

What is not perfect in this code: ave = sum/count;

Answer

Division by zero may occur
Multiplication by 1000000 is impossible in JAVA
Semicolon needed after =
ave should be written as average
It is not JAVA code

Question 19

Question

Attempt to convert a string that is not numeric to a number faults …

Answer

NumberFormatException
ArithmeticException
SDP4IsNotASubjectException
DoNotSpeakException
SadProgrammerException

Question 20

Question

Attempt to access array element using index less than zero folds

Answer

ArrayIndexOutOfBoundsException
ArithmeticException
GoHomeExpception
InputMismatchException
McDonerException

Question 21

Question

________ exception is an error normally due to programmer

Answer

checked
unchecked
broken
cracked

Question 22

Question

________ exception is an error normally not due to programmer

Answer

checked
unchecked
hacked
frozen
cracked

Question 23

Question

Which part is not accessible to user ?

Answer

private
shifted
controlled
based
public

Question 24

Question

How to handle exceptions?

Answer

try{} catch(){}
try{} batch(){}
poimai{}menya{}esli{}smozhesh{}
fly{}catch(){}
go{}home(){}

Question 25

Question

Which of the following is not example of visibility in Java ?

Answer

private
public
protected
package
eclipsed

Question 26

Question

Returns the reference to the element at position index

Answer

get(index)
set(index)
has(index)
goTo(index)
fly(index)

Question 27

Question

Get the size of ArrayList

Answer

size()
size(list)
sizeOf()
length
length(list)

Question 28

Question

Sets the element on position Index to reference entry

Answer

set(index, entry)
setTo(index, entry)
index.set(entry)
entry.set(index)
set.index(entry)

Question 29

Question

Public xxx(int index){ return theData[index]; } this behavior is similar to which method of ArrayList class?

Answer

get
set
size
equals

Question 30

Question

What is the time complexity of insert(index) method in ArrayList

Answer

O(n)
O(1)
O(logn)
O(n^2)
O(m*n)

Question 31

Question

What is the difference between ArrayList and Vector?

Answer

Vector is synchronized, where ArrayList is not
Vector is scalable, where ArrayList is not
Vector is flexible, where ArrayList is not
Vector is resizable, where ArrayList is not
There is no difference

Question 32

Question

for(int i = 0; i < size; i++) { If(theData[i] == entry) { Return i; } Return -1; } This method is similar to which method of ArrayList

Answer

indexOf(entry)
get(entry)
set(entry)

Question 33

Question

Indicate constant time complexity in terms of Big-O notation

Answer

O(1)
O(n)
O(n^2)
O(const)
O(logn)

Question 34

Question

The collection of abstract methods is called ...

Answer

Interface
Abstract class
Class
Method
Function

Question 35

Question

Indicate logarithm time complexity in terms of big-O notation?

Answer

O(logn)
O(n^2)
O(n)
O(1)
O(done)

Question 36

Question

Indicate linear time complexity in terms of big-O notation?

Answer

O(n)
O(n^2)
O(n^3)
O(logn)
O(loglogn)

Question 37

Question

Indicate exponential time complexity in terms of big-O notation?

Answer

O(2^n)
O(n^2)
O(logn)
O(n)
O(n^4)

Question 38

Question

Find the slowest time

Answer

O(n!)
O(2^n)
O(n)
O(n^4)
O(100)

Question 39

Question

What is the time complexity of ArrayList remove(index) method

Answer

O(n)
O(1)
O(n * n)
O(logn)
O(n^3)

Question 40

Question

What is the time complexity of adding an item in front of a LinkedList

Answer

O(1)
O(n)
O(n^2)
O(n^3)
O(nlogn)

Question 41

Question

What is the time complexity of adding element in the beginning of ArrayList

Answer

O(n)
O(1)
O(logn)
O(nlogn)
O(n^2)

Question 42

Question

Which method searches for target and returns its position in LinkedList?

Answer

indexOf(target)
get(target)
set(target)
equal(target)

Question 43

Question

Indicate polynomial time complexity

Answer

O(n^const) (const = 2,3…)
O(nlogn)
O(logn)
O(2^n)
O(1)

Question 44

Question

How to remove item from LinkedList?

Answer

Change Link of previous item to next item of item to be removed
Change Link of next item to previous item of item to be removed
Change Link of removing item to next
Change Link of removing item to previous
Go home and cry

Question 45

Question

What is attribute of CircularList

Answer

Next of last item referencing to the first item
Next of first item referencing to the last item
Prev of last item referencing to the last item
Next of best item referencing to the worst item
I need to go home and prepare this

Question 46

Question

Which of the following in Java is very similar to “contract” ?

Answer

Interface implementation
Class inheritance
Method overloading
Class overriding

Question 47

Question

List iterator and iterator is the same thing in JAVA

Answer

True
False

Question 48

Question

Is it possible to traverse containing of a list this way? for(int nextInt : aList) {… }

Answer

Yes
No
May be
I don't know

Question 49

Question

Show the method which exists in a DoubleLinkedList and not exist in a SingleLinkedList

Answer

constructor
next()
hasNext()
previous()
hasBefore()

Question 50

Question

What relationship class Node and LinkedList have?

Answer

is-a
has-a
Is-b
to-c
They are couple

Question 51

Question

Which of them is NOT an example of Data Structure ?

Answer

Breadth First Search
ArrayList
Graph
Priority Queue
Set

Question 52

Question

Which of them is NOT feature of collection interface ?

Answer

Graph
Set
List
Queue
Vector

Question 53

Question

This returns TRUE if the collection contains object

Answer

contains(obj)
IndexOf(obj)
IndexF(obj)
find(obj)
goTo(obj)

Question 54

Question

Elements of a List are accessed by means of an

Answer

index
switch
position
loop
book

Question 55

Question

A list can ___ or ___ as items(elements) are added or removed

Answer

grow, shrink
flow, shrink
increase, grow
decrease, think
fly, sit

Question 56

Question

OOP stands for?

Answer

Object oriented programming
Obstacle oriented programming
Object oriented playing
Omar oriented programming

Question 57

Question

The Collection is a _____ of a List ?

Answer

superinterface
parent
interface
father
node

Question 58

Question

Which method returns an object at the top of a Stack in JAVA?

Answer

pop()
peek()
front()
poll()
top()

Question 59

Question

Which method adds an item on the top of a Stack in JAVA?

Answer

push()
add()
peek()
top()
bush()

Question 60

Question

First in last out structure is ...

Answer

Stack
Queue
Graph
Set
Tree

Question 61

Question

Which structure is widely used in finding palindrome?

Answer

Stack
Queue
Set
Map
Graph

Question 62

Question

Which structure is widely used to calculate the value of postfix expression?

Answer

Queue
Stack
Set
Graph
List

Question 63

Question

Calculate value of “4 7 * 20-“

Answer

Question 64

Question

Ability of object of one class to act like it is an object of another class

Answer

Polymorphism
Encapsulation
Inheritance
Java code
SLOC(Source Line Of Code)

Question 65

Question

What does method empty return for empty stack?

Answer

True
False
Nothing
Empty
Hello

Question 66

Question

Waiting line of people is similar to which data structure?

Answer

Queue
Stack
Tree
Graph
LinkedList

Question 67

Question

If we call remove() function for the queue, which item will be removed

Answer

first
last
middle
second
third

Question 68

Question

Which function return first added item in the queue?

Answer

front()
first()
element()
goBack()
giveMeFirst()

Question 69

Question

Which function is used to add new item in the queue?

Answer

offer()
suffer()
add()
poll()
remove()

Question 70

Question

First-in first-out data structure ...

Answer

Queue
Stack
Set
Graph
List

	Created by Hanzo Conard over 7 years ago

Next up

SPD

Description

Resource summary

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30

Question 31

Question 32

Question 33

Question 34

Question 35

Question 36

Question 37

Question 38

Question 39

Question 40

Question 41

Question 42

Question 43

Question 44

Question 45

Question 46

Question 47

Question 48

Question 49

Question 50

Question 51

Question 52

Question 53

Question 54

Question 55

Question 56

Question 57

Question 58

Question 59

Question 60

Question 61

Question 62

Question 63

Question 64

Question 65

Question 66

Question 67

Question 68

Question 69

Question 70

Similar