Introduction to blockchain Java

2.

Blockchain projects require high efficiency, so most of the core source code development is using C / C + +. However, if you are doing a blockchain project, unless you need to make a lot of adjustments to the source code, you may not choose to use Java. For general DAPP applications, java development should also be a good choice. For example, in the case of Ethereum blockchain, there is a web3j class library for Java, which is very convenient; bitcoin has bitcoin J class library, which is also easy to use. It still depends on the level of application, what to do, and the situation of the team

share two Java blockchain tutorials:

1. java bitcoin details

2. java Ethereum development

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3. At present, there are not many videos on the market for systematic learning of blockchain, and self-learning of blockchain is still relatively rare. You can apply for classes. Black horse programmers will open a new blockchain discipline. Teachers will teach in an easy-to-understand way and explain in simple terms. You can certainly learn it.

4. Go is an open source programming language, which makes it easy to construct simple, reliable and efficient software. If you want to learn this programming language, you should first find a good tutorial. Brother Lian's go language + blockchain training has recently published a new set of go language tutorial, and the teacher's speaking is very good

with the global hot discussion of the concept of "blockchain", the application of blockchain technology has been quietly added to the daily life scenes such as finance, logistics, credit reference, manufacturing and retail. Some experts have shown that the future blockchain will be closely related to people's lives, and the integration of blockchain technology and people's daily life is the general trend

the popularity of the blockchain market has triggered a large number of talents demand based on blockchain technical personnel, and the popularity of blockchain talents is rising at the speed of light. According to the "2018 blockchain high salary list" released by lagou.com, Tencent, Xiaomi, Suning, Jingdong and other domestic enterprise giants have released many high salary blockchain post demands, trying to explore blockchain related technologies and applications. It is also pointed out in the list that the demand for high salary jobs is mainly based on blockchain related technical jobs, among which Suning and Keda have been given the highest monthly salary of 100k

the huge market demand for technical talents will inevitably lead to the explosive emergence and growth of the whole blockchain training market. Most of the training modes can be divided into online training, traditional IT organization training, and offline short-term training camps, which mainly focus on high-end forms. However, in the process of the hot market evolution, there are also a variety of blockchain training chaos: lecturers' qualifications are watered down, and even the most basic names are not disclosed, the syllabus is opaque, and the teaching quality is shrinking, Unreasonable class arrangement and uneven training fees and so on

with the large-scale development of the whole blockchain training market, brother company ecation, together with Yin Cheng, a senior blockchain expert, and his Tsinghua Shuimu Weiming team, has set up a blockchain college. With its professional and powerful team of technical lecturers, detailed and comprehensive curriculum system, and a large number of authentic enterprise blockchain projects, it aims to deepen the blockchain teaching and training field, And train more professional technical talents for enterprises and society<

Yin Cheng, a senior blockchain technology expert, graated from Tsinghua University, is the dean of brother Lian blockchain college. He once served as Google Algorithm Engineer, the world's most valuable expert in the field of Microsoft blockchain, and the gold medal lecturer of Microsoft tech.ed conference. Proficient in C / C + +, python, go language, sicikit learn and tensorflow. With 15 years of programming experience and 5 years of teaching experience, senior software architect, Intel Software Technology expert, famous technology expert, with many years of working experience in the world's top it company Microsoft Google. He has many years of experience in software programming and lecturing, and has developed many procts in human-computer interaction, ecation, information security, advertising and blockchain system. He has deep experience in project management and R & D, has two AI invention patents, and has practical experience in developing e-money deployed to Microsoft Windows azure. Teaching explanation is in simple language, so that students can apply what they have learned.

5. Go language is the mainstream language of blockchain
according to the data survey of boss Research Institute, go and C + + are the mainstream languages of blockchain Posts currently recruited. The early blockchain system and application
programs are mainly implemented in C + +, and now most companies will use go language to
build public chain systems<
C + + is suitable for the development of local programs.
go language is suitable for the development of network programs and local programs.
compared with C + + go, it has the following advantages:
garbage collection
clear meaning
unified format

disadvantages:
efficiency is not as high as C + + at present, but for desktop programs, efficiency is not a big problem, Because hardware is fast growing.

C + + is the mainstream language at present, and I believe it will become a classic just like C.
to become a classic means that people who learn it can get a good salary, but it is only good for themselves.
in the future network world, go will have a big chance to get hot, I think it has a bright future.

the developers of go, including the founders of UNIX and C language, are the first generation of hackers, and I believe they will do a good job.

now the go stack + blockchain market is out of an unprecedented gale, and the situation is gratifying.

6. < UL >

the underlying development of blockchain can't be realized with Java

as the upper development, you just need to dock according to the given open source interface, and then develop what you need with the language you are good at

now there are many blockchain system templates, you can see which development cases

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7. I don't know about it. Of course, the virtual currency is traded in the virtual place. You can buy some virtual things to make up for yourself.

8. 2019 is a year of rapid development of bitcoin derivatives, especially in the second half of the year, major exchanges rush to launch futures contract trading, it seems that spot trading + futures trading has become the standard configuration of exchanges. When the market procts are highly concentrated, the market competition is very fierce. The contract market is in full swing, and the vast majority of market shares are held by bitmex, okex, fire currency and other exchanges. As a result, the contract market share is getting smaller and smaller. If you want to win a place in the derivatives market, you have to work hard in proct research and development, which is bound to break through the current market pattern

although the futures contracts were launched last year, for the bitcoin derivatives market, futures alone is obviously not perfect, and there is a huge space for the bitcoin derivatives market. However, bitoffer exchange aims at the bitcoin derivatives market, relying on the advantages of the top financial R & D team, It is the first to launch bitcoin options and bitcoin ETF funds in the world, which is favored by the majority of users<

Lucian, chief analyst of bitoffer exchange, said that BTC options and ETF funds were launched to make up for the current vacancy in the bitcoin derivatives market. What other exchanges can't do is for us to do. The launch of bitcoin options and ETF is not only the improvement of the bitcoin derivatives market, but also a performance of promoting the development of the market. Any investment market can not do without derivatives, because investment is certainly risky, and derivatives can be used as risk hedging tools<

Lucian also revealed that bitoffer is currently developing and building a new bitcoin futures contract trading in the instry, which is expected to be launched in the first quarter of 2020. It is worth noting that the platform has been launched for spot, options and ETF fund trading. If the futures contract trading is launched in the first quarter, it means that, Bitoffer will become the world's first exchange with a full range of bitcoin spot and derivatives routes. By then, bitoffer is bound to win a place in the derivatives market!

9. Learn the blockchain. Blockchain is a hot field at present. Blockchain is a perfect combination of computer and financial instry.

10. Blockchain is a rapidly developing field. You have to have a Java foundation and be familiar with JavaScript. You can start with JavaScript and other frameworks, and hope to continue to develop and learn in this direction. With the popularity of ICO and mining trends, you don't hesitate to try blockchain development. Blockchain technology has attracted the attention of banks in various countries and regions. All in all, blockchain has a bright future
blockchain can solve many problems:
1. Ensure the security of bank deposits
e to fraud, banks will lose a huge amount of money every year. Blockchain has almost impeccable security, which can help them solve this problem. The bank customer who switches to blockchain wallet is replaced by a unique identification number. In addition, they use the private key to access the money. With the help of blockchain, only the account owner can process the funds - even the bank can't get them. These security measures ensure the security of bitcoin and other cryptocurrencies, so that banks can easily protect deposits
2. Cloud storage on blockchain can better resist hacker attacks
cloud storage companies use central servers to store data. For this reason, the risk of hackers stealing information increases - by accessing the server, hackers will automatically penetrate the entire network. Cloud storage on an apartment can protect data in a decentralized way, and the nodes are disconnected. Therefore, they are not vulnerable to attack, even hackers attack a node will not damage the entire network
3. Faster cargo transportation
in terms of logistics, it is necessary to organize cargo transportation correctly and quickly. The key is to be able to track goods throughout the supply chain. With the help of blockchain technology, this process will become more secure and transparent. In addition, decentralization of continuous records in the register would rece the role of people and the possibility of delays
4. Election cheating
election cheating, forged signatures, holding meetings without informing all members are the most common problems in corporate governance. All these problems can be solved by the integration of blockchain technology. For example, it can track and count votes, eliminating the possibility of forging someone's signature or voice. Instead, each voting participant will receive a unique key as identification.