CF

Learn Blockchain Technology & Cryptocurrency in Java

5h 44m 32s
English
Paid

Blockchain is a revolutionary technology that allows for decentralized and distributed storage of information. As one of the hottest topics in software engineering today, alongside artificial intelligence and machine learning, blockchain technology offers disruptive potential in how we interact with technology. In this course, you will explore the basics of blockchain technology and dive into the world of cryptocurrencies.

Learn the practical implementation of these technologies in Java, with the flexibility to skip the coding sections if you prefer.

Chapter 1 - Blockchain Theory

  • Understand the fundamental basics of blockchain technology

  • Learn about the SHA-256 hashing technique

  • Centralized vs decentralized ledgers

  • Explore the concept of mining and the role of miners

  • Dive into consensus algorithms

  • Proof of Work (PoW) and Proof of Stake (PoS) mechanisms

  • Resolve the Byzantine Generals Problem

Chapter 2 - Blockchain Implementation

  • Implement a simple blockchain from scratch using Java

Chapter 3 - Cryptocurrency Theory

  • Understand the motivation behind cryptocurrencies

  • Master Merkle trees and transaction verification algorithms

  • Learn about mining in cryptocurrencies

  • Explore mempools and their function

  • Uncover unspent transaction outputs (UTXOs)

  • Dive into elliptic curve cryptography in cryptocurrencies

  • What is a wallet?

  • Understand orphaned blocks and the block verification problem

  • Discover the 51% attack vulnerability

  • Differentiate between soft forks and hard forks

Chapter 4 - Cryptocurrency Implementation

  • Create a simple cryptocurrency from scratch in Java

Chapter 5 - Altcoins & Cryptocurrency Evolution

  • Dive into Ethereum, Solidity, and the Ether cryptocurrency

  • What are ICOs (Initial Coin Offerings)?

  • Explore Cardano and the ADA cryptocurrency

  • Learn about various altcoins

  • Discover LiteCoin (LTC)

  • Understand Dash and its unique features

If you're interested in blockchain and cryptocurrency technology, this course is perfect for you. Thank you for joining my course, let's get started!

About the Author: Udemy

Udemy thumbnail

Udemy is the largest open marketplace for online courses on the internet. Founded in 2010 by Eren Bali, Oktay Caglar, and Gagan Biyani and headquartered in San Francisco, the company went public on the Nasdaq in 2021 under the ticker UDMY. The platform hosts well over two hundred thousand courses across software development, IT and cloud, data science, design, business, marketing, and creative skills, taught by tens of thousands of independent instructors. Roughly seventy million learners use it worldwide, and the corporate arm — Udemy Business — supplies a curated subset of that catalog to enterprise customers.

Because Udemy is a marketplace rather than a single editorial publisher, the catalog is uneven by design. The strongest material lives in the long-form, project-based courses authored by working engineers — full-stack JavaScript, React, Node.js, Python data science, AWS, Docker and Kubernetes, mobile development with Flutter and React Native, and cloud certification preparation. The CourseFlix listing under this source is the slice of that catalog that has been mirrored here for offline-friendly viewing, organized by topic and updated as new releases land. Pricing on Udemy itself swings dramatically with the site's near-permanent sales, which is why the platform is best treated as a deep reference catalog: pick instructors with strong reviews and a track record of updating their material rather than buying on the headline price alone.

Watch Online 58 lessons

This is a demo lesson (10:00 remaining)

You can watch up to 10 minutes for free. Subscribe to unlock all 58 lessons in this course and access 10,000+ hours of premium content across all courses.

View Pricing
0:00
/
#1: Introduction
All Course Lessons (58)
#Lesson TitleDurationAccess
1
Introduction Demo
02:33
2
What is the motivation behind blockchains?
05:45
3
Data structure behind blockchains
06:56
4
SHA256 hashing algorithm
07:39
5
SHA256 hashing algorithm example
08:46
6
Decentralized ledgers
09:40
7
Blockchain mining #1
08:29
8
Blockchain mining #2
09:11
9
Consensus protocol
02:00
10
Byzantine generals problem
05:53
11
What is proof-of-work (PoW)?
05:05
12
What is proof-of-stake (PoS)?
08:16
13
Decentralized and distributed networks
04:28
14
Blockchain implementation I
05:46
15
Blockchain implementation II
05:41
16
Blockchain implementation III
07:36
17
Blockchain implementation IV
05:04
18
Blockchain implementation V
07:55
19
Blockchain implementation VI
06:44
20
Cryptocurrency motivation
04:11
21
Cryptocurrency policies
04:56
22
Mempools
07:08
23
Mempools example
04:18
24
Merkle-tree motivation
07:21
25
Merkle-tree implementation
06:57
26
PublicKey and PrivateKey
05:23
27
UTXOs
05:05
28
Wallets
03:14
29
51% attack
06:17
30
Orphaned blocks and block verification
05:47
31
Who pays the miners exactly?
02:22
32
What is a fork?
07:13
33
Cryptocurrency implementation I
01:40
34
Cryptocurrency implementation II
07:46
35
Cryptocurrency implementation III
01:37
36
Cryptocurrency implementation IV
04:10
37
Cryptocurrency implementation V
08:29
38
Cryptocurrency implementation VI
06:48
39
Cryptocurrency implementation VII
03:27
40
Cryptocurrency implementation VIII
03:30
41
Bitcoin
03:20
42
Altcoins and ICOs
05:31
43
Ethereum
07:04
44
Ethereum and the DAO attack
03:31
45
Cardano
11:53
46
LiteCoin
05:36
47
Dash
09:54
48
Why do we need elliptic curve cryptography?
02:50
49
What are elliptic curves?
04:20
50
Point addition and point doubling
14:03
51
Double and add algorithm
04:31
52
Elliptic curve discrete logarithm problem
03:35
53
Elliptic curve based Diffie-Hellman key exchange algorithm
05:49
54
Digital signatures with elliptic curves
10:45
55
RSA and elliptic curve cryptography
03:13
56
Elliptic curve cryptography (ECC) implementation I
08:13
57
Elliptic curve cryptography (ECC) implementation II
04:47
58
Elliptic curve cryptography (ECC) implementation III
04:31
Unlock unlimited learning

Get instant access to all 57 lessons in this course, plus thousands of other premium courses. One subscription, unlimited knowledge.

Learn more about subscription

Related courses

Frequently asked questions

What prior knowledge do I need before taking this course?
The course is designed for those with a basic understanding of programming concepts. Familiarity with Java is beneficial as the course includes practical implementation of blockchain and cryptocurrency technologies using Java. No prior knowledge of blockchain or cryptocurrency is required, as the course covers foundational concepts such as SHA-256 hashing and consensus algorithms from the ground up.
What projects or applications will I build during the course?
During the course, you will implement a simple blockchain from scratch using Java. This project will help you understand the data structures and mechanisms behind blockchains, such as decentralized ledgers and consensus protocols. Additionally, you will explore cryptocurrency implementation, focusing on transaction verification using Merkle trees and the concept of unspent transaction outputs (UTXOs).
Who is the target audience for this course?
This course is suitable for software engineers, developers, and technology enthusiasts interested in understanding blockchain and cryptocurrency technologies. It is ideal for those looking to gain practical skills in implementing these technologies using Java. The course also appeals to professionals keen on grasping the theoretical foundations of blockchain and cryptocurrencies.
How does the depth of this course compare to similar blockchain courses?
The course provides a balanced approach by covering both theoretical and practical aspects of blockchain and cryptocurrency. It delves into fundamental topics such as the Byzantine Generals Problem, consensus algorithms, and mining mechanisms, while also offering hands-on Java implementation exercises. This dual focus distinguishes it from courses that may only cover theoretical concepts or only provide coding practices.
Which specific tools or platforms are used in the course?
The course primarily utilizes Java for implementing blockchain and cryptocurrency technologies. Java is chosen for its widespread use and versatility in software engineering. The course does not rely on specific blockchain platforms or tools but focuses on core principles and implementations that can be adapted to various technologies and frameworks.
What topics are not covered in this course?
The course does not cover advanced blockchain applications such as smart contracts or decentralized applications (DApps) beyond the basic cryptocurrency implementations. It focuses on foundational blockchain and cryptocurrency concepts and practical implementation in Java without delving into specific platform-based solutions like Ethereum smart contracts.
What is the expected time commitment to complete the course?
With 58 lessons, the course offers comprehensive content that can typically be completed within a few weeks, depending on the learner's pace. The flexibility to skip coding sections allows for a tailored learning experience. Engaging fully with coding exercises and theoretical content may require approximately 20-30 hours, but this can vary based on individual learning speeds and background knowledge.