Java developer salary August 2017

United States Java developers labor market analysis, according to the results August 2017
15 August 2017   518

We publish the analysis of the labor market of developers in the United States monthly. For Java developers in August there were 10 135 job openings. The vacancy rates were distributed as follows.

Java Salary Estimate Java August 2017
Java Salary Estimate

The most of the developers are required in New York, the least in Philadelphia and Austin.

Java developer vacancies locations Java August 2017
Java developer vacancies locations

Among the companies that hire Java developers the leaders are: 

  1. Diverse Lynx
  2. Jobspring Partners
  3. JP Morgan Chase 

Java developer vacancies in different companies Java August 2017
Java developer vacancies in different companies

According to the required experience, the vacancies are distributed as follows.

Number of Java vacancies by the experience level Java August 2017
Number of Java vacancies by the experience level

The average salary and salary according to the level of experience were distributed as follows.

Average salary Java August 2017
Average Java developer salary

The analysis was carried out by the Hype.codes portal method using the indeed.com data.

What is Web3j?

Small review of lightweight Java and Android library for integration with Ethereum clients
15 December 2017   836

What is webj3?

web3j is a lightweight, highly modular, reactive, type safe Java and Android library for working with Smart Contracts and integrating with clients (nodes) on the Ethereum network:

web3j architecture
Web3j Architecture

This allows you to work with the Ethereum blockchain, without the additional overhead of having to write your own integration code for the platform.

According to the developers, these are the features:

  • Complete implementation of Ethereum's JSON-RPC client API over HTTP and IPC
  • Ethereum wallet support
  • Auto-generation of Java smart contract wrappers to create, deploy, transact with and call smart contracts from native Java code (Solidity and Truffle definition formats supported)
  • Reactive-functional API for working with filters
  • Ethereum Name Service (ENS) support
  • Support for Parity's Personal, and Geth's Personal client APIs
  • Support for Infura, so you don't have to run an Ethereum client yourself
  • Comprehensive integration tests demonstrating a number of the above scenarios
  • Command line tools
  • Android compatible
  • Support for JP Morgan's Quorum via web3j-quorum

It has five runtime dependencies:

  • RxJava for its reactive-functional API
  • OKHttp for HTTP connections
  • Jackson Core for fast JSON serialisation/deserialisation
  • Bouncy Castle (Spongy Castle on Android) for crypto
  • Jnr-unixsocket for *nix IPC (not available on Android)

It also uses JavaPoet for generating smart contract wrappers.

Lear more at GitHub.