GraalVM 0.26 released

New version of Oracle project available now, with new major features
01 August 2017   709
Java

Popular general-purpose programming language and computing platform

New version of GraalVM now available.

What is GraalVM?

Graal is Oracle project, designed to improve the performance of Java virtual machine-based languages to match the performance of native languages. Graal offers performance advantages not only to Java code, but also to scripting languages such as JavaScript, Ruby, and R. Additionally, it enables the execution of native code on the JVM via an LLVM-based front end (project Sulong). Languages are executed by Graal via the Truffle framework, which comes with seamless interoperability and polyglot debugging and profiling functionality.

Features:

  • Performance - Graal incorporates our research on compiler technology, and offers better peak performance on some workloads than a traditional JVM.
  • Polyglot - Java, JavaScript, Ruby, and R are all available at competitive performance within the same execution environment.
  • Interoperability - Languages executed in Graal can call each other without overhead and libraries from other languages can be used.
  • Embeddability - Embed dynamic languages and native code with sandboxing capabilities.
  • Tooling - Graal benefits from JVM-based tooling and all languages share common tooling such as debugging and profiling.

What's new in version 0.26?

This release contains some major changes/additions:

  • LLVM bitcode interpreter Sulong now a part of Graal
  • new GraalVM directory layout
  • Graal SDK
  • Native images for all languages
  • New guest launchers with standardized VM options

What is Web3j?

Small review of lightweight Java and Android library for integration with Ethereum clients
15 December 2017   840

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.