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Kim Young-han's Practical Java - Intermediate Part 2

Learn Java generics and collection frameworks in depth with a focus on practical applications. Also learn the basics of data structures.

(5.0) 709 reviews

9,590 learners

  • yh
자바
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Java
oop
Algorithm
Coding Test

Reviews from Early Learners

What you will gain after the course

  • Java Generics

  • Collection Framework

  • Data structure

Ranked 1st in cumulative number of students enrolled in domestic development field
Kim Young-han's Practical Java Made Right

Just knowing Java grammar? That won't do!

Former Technology Director of Woowa Brothers, Cumulative Students Surpass 400,000
Why Kim Young-han created Java lectures

•••

“I wanted to create a proper Java course that would create proper developers needed for real work.”

Learn Java Generics and Collections Properly

We have learned about programming fundamentals and object-oriented concepts (OOP) through the previous two lectures , "Java Introduction" and "Java Basics" . Based on that, in the previous "Java Intermediate Part 1" , we learned about various intermediate Java functions.

In this "Intermediate Java 2" lesson, we will cover generics and the collection framework in depth.

  • Java Generics

  • Collection Framework


  • Basics of various data structures


Kim Young-han's Practical Java Roadmap

This lecture is the fourth lecture of Kim Young-han's Practical Java Roadmap , and is intended for those who have learned basic Java grammar.

>> Introducing the Java Roadmap Guide to help you learn effectively and appropriately for your purpose .

The lecture "Kim Young-han's Practical Java - Intermediate Part 2" is

The importance of essential understanding

Rather than simply learning Java's syntax and features, we delve deeply into why those features are necessary and how they can be applied in practice.

A practical approach

Rather than simply conveying theories, it provides a step-by-step understanding of the necessity of Java technology through example code. In addition, through various examples, you can understand how each technology is utilized in practice.

Our goal is more than just grammar.

The goal of this lecture is to help you go beyond simply knowing the functions of Java collections to properly master the basics of data structures and be able to properly utilize the data structures needed for practical work. Through this lecture, we will teach you in depth the generics and collection technologies that are essential for practical work.

In the “Advanced Java” section that you will learn later,

The advanced version, which follows the intermediate Java version, aims to cultivate the capabilities necessary to explore best practices in actual work based on the Java fundamentals built through the previous series.

I hope that those who study this intermediate course will be able to thoroughly learn and utilize the contents covered in the course before deeply understanding and using a wide range of advanced technologies such as lambda, streams, I/O, networks, and multithreading.

Lecture Contents

  • Completes the overall Java generics and collections framework.

  • The goal is to deeply utilize generic/collection technologies required for practical use, rather than simple functions.

Generic

Generics in Java are really difficult to understand properly.
In this lesson, to explain generics as easily as possible, we will first write code without using generics at all.

And as you gradually introduce generics into your code, you'll naturally understand how generics can help you solve code duplication that was difficult to solve using traditional approaches.

Collection Framework

Java's collection framework is a collection of data structures .

In practice, data structures are used very frequently and are directly related to performance issues, so it is very important to properly understand and use data structures.

In this lecture, you will deeply understand the principles by implementing various data structures used in collections. As a result, you will be able to properly understand the fundamental reasons why each data structure performs well and poorly in certain cases and apply them in practice.

Understanding data structures

This lecture explains the basic theory of data structures so that you can properly understand data structures, and also implements core data structures frequently used in practice with code .

ArrayList

LinkedList

Hash Algorithms and Hash Tables (Hash)

Tree Structure

Set (Set) and Map Structure (Set, Map)

Stack and Queue Structures

In each chapter, you will learn about various data structures through theory and practical implementation. In this way, you will complete the overall Java collection framework and properly understand which data structure to use where .

“Rather than thinking about what more I should teach, I thought more deeply about what absolutely must be known.”

In this 'Kim Young-han's Practical Java Roadmap', my goal is to create a capable developer who has a solid foundation of basic skills necessary for actual work. I will help you become a Java developer who can ask the fundamental question, 'Why do we need this function?' and grow by applying it.

Recommended for
these people

Who is this course right for?

  • Aspiring developer

  • For those who have studied Java but want to solidify their fundamentals

  • Developers who want to gain a deeper understanding of Java for practical use

Need to know before starting?

  • Kim Young-han's Practical Java - Fundamentals

  • Kim Young-han's Practical Java - Intermediate Level 1

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Curriculum

All

93 lectures ∙ (19hr 24min)

Course Materials:

Lecture resources
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Reviews

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709 reviews

5.0

709 reviews

  • maxjc님의 프로필 이미지
    maxjc

    Reviews 34

    Average Rating 4.7

    5

    32% enrolled

    The great Kim Young-han's hard work and dedication have increased the value of others. Those who are struggling and carrying heavy burdens because of JAVA, come to Kim Young-han. I am always grateful. Take care of your health.

    • yh
      Instructor

      Reading Mr. Park Jong-cheol's course review, I feel like my hard work in preparing was worth it :) Thank you so much!

  • jeongik229381770님의 프로필 이미지
    jeongik229381770

    Reviews 12

    Average Rating 5.0

    5

    100% enrolled

    Teacher, your teaching skills are truly national treasure level...!!!

    • yh
      Instructor

      Wow~ Mr. Kwon Jeong-ik, you are a national treasure, so it was worth all the hard work preparing for it! Thank you.

  • myjjoo47580032님의 프로필 이미지
    myjjoo47580032

    Reviews 11

    Average Rating 5.0

    5

    100% enrolled

    I like Java thanks to Teacher Yeonghan! Thank you so much!! Thanks to you, I think I have a good understanding of collections that I had a vague idea about. It was vague, but now I feel clear! I listened to the Spring lecture first, so I will listen to it again and understand it properly!! I will also wait for the advanced version!!

    • yh
      Instructor

      JuHee_Lee, I'm glad you're enjoying Java :) I'm rooting for you!

  • llouis님의 프로필 이미지
    llouis

    Reviews 4

    Average Rating 5.0

    5

    100% enrolled

    I was able to learn about the Java Collection Framework systematically, and I am grateful that you explained in detail even the parts I missed. I will continue to listen to Younghan’s other lectures.

    • yh
      Instructor

      Thank you, LLouis, for listening to me till the end :)

  • kdy9509301201님의 프로필 이미지
    kdy9509301201

    Reviews 10

    Average Rating 5.0

    5

    100% enrolled

    I want to see the advanced version~!

    • yh
      Instructor

      Thank you, Mr. Kim Dae-young, for listening so attentively^^!

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