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Java Internalization Java technologies Quiz

Java Internalization Java technologies Quiz

Java Internationalization (i18n) is Java's built-in support for making your app able to serve users in multiple different languages. In fact, internationalization covers more than just the language. It also covers formatting of numbers, adjustment to date and time etc.

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Quiz Questions And Answers

The default capacity of an ArrayList is:

12
16
1
10

Which of the following provides higher performance for the insertion and removal from the center of the list?

Vector
ArrayList
LinkedList

An unordered array has a search time complexity of:

O(log n)
O(n)
O(n + 1)
O(1)

The add and take away methods of TreeSet have a time complexity of:

O(n)
O(n + 1)
O(1)
O(log n)

After resizing, size of ArrayList is increased by :

200%
50%
100%
None of these

After resizing, size of Vector is accumulated by:

200%
100%
50%
None of these

Deque and Queue are derived from:

AbstractList
Collection
AbstractCollection
List

You need to reference a value stored in an array named B in row 7 column 3. Which syntax is correct within Java for finding the value of this variable?

B[7][3]
B[3][7]
B[7,3]
B[3,7]

There are numerous ways of adding comments to code written in Java. Which of the following are accepted methods of signifying the beginning of comments within Java?

#
*
//
/#

Which company now owns Java?

SAP
PeopleSoft Inc.
Apache Software Foundation
Oracle Corporation

You are having a problem with the “if” logic in your code and need to utilize case conditions to create a number of possible execution paths. Which statement is necessary.

task
swap
instance
switch

Which of the following individuals is credited for first designing Java?

James Gosling
Tim Ritchey
Jim LeValley
Ian Sheeler

Within Java, each call to StdOut.println () does which of the following?

Overwrites the current contents of the file
Reads and then prints the contents of the current file
Prints the contents of the current file
Appends text to the end of the file

At this point in time, which of the following is the officially supported version of Java?

Java 7
Java 6.5
Java 8
Java 9

Which keyword keeps the main method from returning any value to the caller?

exclusive
restricted
concealed
void
ANSWERS

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