Get your JAVA dream job! Collection Interview Questions

Name: Get your JAVA dream job! Collection Interview Questions
Rating: 4.3 (32 reviews)

Learn Java Arrays, Collections, List, Maps and Solve puzzles to win Java interview questions!

Created byYuval Ishay

Last updated 4/2021

English

What you'll learn

You will answer collections interview questions more correctly and accurately
Cope professional java interview with more confidence
You will achieve better understanding in the Java topics learned in the course.

Course content

8 sections • 44 lectures • 3h 41m total length

Welcome!3:52
Course Overview2:41

Arrays Intro2:08
Arrays Overview4:41
Array Demo5:06
How can you initialize an array?4:38
What are array's limitations?6:48
What is Varargs?7:44
Multi Dimension Array4:01
Multi dimensional array - Demo6:10
Master multidimensional arrays by defining and accessing a two-dimensional string array, printing elements and dimensions, and passing arrays between methods for interview readiness.
How to remove duplication from Array?8:35
Explore an interview-ready Java approach to remove duplicates from an integer array without using collections by sorting, skipping duplicates, and copying unique values while considering memory usage and limitations.
Array Quiz

Collection Framework - What is it?6:03
Explore the Java collection framework, including the collection interface, common subinterfaces like list and set, and map as a sibling, and learn basic operations like add, remove, and size.
List interface4:51
ArrayList Theory and Interview questions5:54
ArrayList Demo - Basic5:46
Explore the basic operations of ArrayList in Java: create an ArrayList<Student>, add elements, preserve insertion order, iterate with for loop or iterator, print elements, and discuss duplicates and null values.
ArrayList Demo - Using Indexes6:24
ArrayList - Dynamic Resizing Questions6:34
ArrayList VS Vector3:07
Linked List - Theory3:35
Demo - When should we use Linked List?4:41
ArrayList Quiz

Maps Intro2:10
Map Interface overview5:45
Hash Map Basic Demo5:42
Using the same key and Null on HashMap - Demo6:00
See how overwriting an existing key replaces its value in a hash map without changing size, and how null keys or values are handled, including iteration order.
HashMap vs Hashtable6:46
Compare hash map and hash table thread safety and performance: hash table is thread safe and slower; hash map is faster but not thread safe; null keys and values differ.
Map Basic Interview Questions & Answers5:48
Explore HashMap and HashTable basics, including key and value handling, null keys and values, and ordering differences, with notes on string and integer keys and map performance.
Maps Basic Quiz
Why equals() and hashcode() are so important?5:24
HashMap Internal Implementation5:38
HashMap Load Factor and Capacity - Q & A5:00
Advance HashMap Quiz
When should I use TreeMap?6:58
When should I use LinkedHashMap?3:40
Advance Map Quiz

Puzzle intro1:37
Practice Java interview puzzles that test algorithm and code logic, using live interview questions and a real code solution to deepen understanding of the Java API and core concepts.
How to iterate 2D Array in a spiral way?2:44
How to iterate 2D Array in a spiral way? - code demo.6:40
Learn to implement a spiral iteration of a 2d array in java, using a direction enum and boundary updates, with a runnable code demo and tests.
How to find maximum share profit?3:33
Learn to compute the maximum profit from Apple stock prices by buying before selling, with no shorting, and practice breaking the problem into parts and testing solutions.
How to find maximum share profit - solution6:32

Requirements

Basic knowledge in Java
Basic knowledge in Eclipse IDE

Description

Hello and Welcome!

Scared of coding interview?

This course will practice you with the must know Java interview questions.

In addition it will also prepare you to crack Java puzzle pattern. If you can learn the pattern, you can beat coding interview!

If you want to get your dream job, and you are serious about your career you should take this course.

In this course we will review Java interview questions from different areas:

Arrays - advantages and disadvantages, initialization, search, sort, multi dimensional , puzzle.
Collection - Framework, List, ArrayList, Vector, LinkedList.
Maps - Map interface, HashMap, Hashtable, Internal Implementations, TreeMap, LinkedHashMap.
Iterator - Iterator Interface, Fail-Fast, Fail-Safe, List Iterator.
Puzzles - Programming puzzles from Google and Amazon.

Lesson structure

The lecture were divided to short lectures of about 5 min each, so you will be able to come back to a specific topic and replay the lesson without the need to search in a specific long video for the part that you would like to repeat on.

Each lesson will include several questions; all of them are from real interviews. We'll go over the questions and answer them.

Quiz

Summarizing each few classes there will be a quiz, designed to repeat the material and help the student understand it even better.

Who this course is for:

A beginner to advance ( 1-10 years ) developer who want to win a job as Java developer
Java developer who want to learn java collection framework in more depth.

Get your JAVA dream job! Collection Interview Questions

What you'll learn

Explore related topics

Course content

Welcome!2 lectures • 7min

Installation3 lectures • 15min

Arrays9 lectures • 50min

Collection Questions9 lectures • 47min

Collections Iterators4 lectures • 21min

Maps11 lectures • 59min

Collections Puzzle5 lectures • 21min

Wrap Up1 lecture • 3min

Requirements

Description

Who this course is for: