
java-collections(part-I)-vlits
Authored by kolla vivek
Computers
1st Grade
Used 29+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these packages contain all the collection classes?
java.lang
java.util
java.net
java.awt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these classes is not part of Java’s collection framework?
Maps
Array
Stack
Queue
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of this interface is not a part of Java’s collection framework?
List
Set
SortedMap
SortedList
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these methods deletes all the elements from invoking collection?
clear()
reset()
delete()
refresh()
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is Collection in Java?
A group of objects
A group of classes
A group of interfaces
None of the mentioned
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the output of this program?
import java.util.*;
class Array
{
public static void main(String args[]){
int array[] = new int [5];
for (int i = 5; i > 0; i--)
array[5-i] = i;
Arrays.fill(array, 1, 4, 8);
for (int i = 0; i < 5 ; i++)
System.out.print(array[i]);
}
}
12885
12845
58881
54881
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the output of this program?
import java.util.*;
class Bitset
{
public static void main(String args[]){
BitSet obj = new BitSet(5);
for (int i = 0; i < 5; ++i)
obj.set(i);
obj.clear(2);
System.out.print(obj);
}
}
{0, 1, 3, 4}
{0, 1, 2, 4}
{0, 1, 2, 3, 4}
{0, 0, 0, 3, 4}
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