July 2019
Intermediate to advanced
400 pages
11h 7m
English
Content preview from Practical Java Programming for IoT, AI, and Blockchain
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
CHAPTER 10Java Programming for Blockchain Applications
You can fool all the people some of the time and some of the people all the time, but you cannot fool all the people all the time.
—Abraham Lincoln
- 10.1 What Is Blockchain?
- 10.2 How Do You Validate a Blockchain?
- 10.3 How Do You Mine the Blocks?
- 10.4 How Does Blockchain Work?
- 10.5 Uses of Blockchain
- 10.6 Issues with Blockchain
- 10.7 Java Blockchain Examples
- 10.8 Java Blockchain Transaction Examples
- 10.9 Java BitcoinJ Example
- 10.10 Java Web3j Examples
- 10.11 Java EthereumJ Examples
- 10.12 Java Ethereum Smart Contract Examples
- 10.13 Go Further: Choosing a Blockchain Platform
- 10.14 Summary
- 10.15 Chapter Review Questions
10.1 What Is Blockchain?
Blockchain is another one of the hottest buzzwords at the moment. What is blockchain, and what has it to do with Bitcoin? Well, blockchain is a technology that was invented in 2008 by the mysterious Satoshi Nakamoto, whose real identity is still unknown. (It is largely believed to be a person or a group of people living in Japan.) The original purpose of blockchain technology was to serve as the distributed, digital, public transaction ledger of the cryptocurrency Bitcoin to solve the double-spending problem. In digital currency, double-spending occurs when the same single digital token can be spent more than once. With a public ledger, when you try to spend the same digital token the second time, the transaction will not be validated. But today, blockchain has shown potential in ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.