gs gs128 Java Util Collections Framework - Java.util - ArrayList Class - Quiz No.1
gs gs128 Java Quiz
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Question 1: Which of these standard collection classes implements a dynamic array?
AbstractList
LinkedList
ArrayList
AbstractSet
Question 2: Which of these class can generate an array which can increase and decrease in size automatically?
ArrayList()
DynamicList()
LinkedList()
MallocList()
Question 3: Which of these method can be used to increase the capacity of ArrayList object manually?
Capacity()
increaseCapacity()
increasecapacity()
ensureCapacity()
Question 4: Which of these method of ArrayList class is used to obtain present size of an object?
size()
length()
index()
capacity()
Question 5: Which of these methods can be used to obtain a static array from an ArrayList object?
Array()
covertArray()
toArray()
covertoArray()
Question 6: Which of these method is used to reduce the capacity of an ArrayList object?
trim()
trimSize()
trimTosize()
trimToSize()
Question 7: What will be the output of the following Java program?
import java.util.*; class Arraylist { public static void main(String args[]) { ArrayList obj = new ArrayList(); obj.add("A"); obj.add("B"); obj.add("C"); obj.add(1, "D"); System.out.println(obj); } }
[A, B, C, D]
[A, D, B, C]
[A, D, C]
[A, B, C]
