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Getting Started: Native Java with GraalVM

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Table Of Contents

• What’s This?
• What is GraalVM?
• Sample Application
• Frameworks
  • Install GraalVM
  • Spring Boot
    • Building Native Executable
    • Building Fat JAR
  • Quarkus
    • Set-Up
    • Building Native Executable
    • Building FAT JAR
• How do JIT Java and GraalVM Native Image work?
  • At Build Time
    • JIT Java
    • GraalVM Native Image
  • At Runtime
    • JIT Java
    • GraalVM
• Existing & Possible Improvements
  • JIT Java
    • Existing: Application Class Data Sharing
    • Under Construction: Project CraC & OpenJ9 CRIU
    • Under Construction: Project Leyden
  • GraalVM
    • Garbage Collection
    • Peak Performance
    • Longer Build Times
    • Debugging
    • Observability
• Thank You

What’s This?

I help you get started with native Java with GraalVM, an open-source Java compiler. It creates native executables that are smaller, start faster, use less memory, and are more secure.

Getting Started: React Native

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What’s This?

I help you learn Facebook’s React Native, the second-most popular cross-platform framework for building native iOS & Android applications from one codebase.

Alternatives

Use Google’s Flutter.

Learning React Native

The React Native website is a good starting point. React Native uses JavaScript to create mobile applications.

Learning JavaScript

• The MDN Web Docs (the site formerly known as “Mozilla Developer Network”) has various tutorials based on your skill level.
• academind has a JavaScript course with 40 hours of video. The same course is on Udemy, where it may be cheaper in a sale.

Learning TypeScript

TypeScript mixes “some Java into JavaScript”, such as types. Hence the name! You have to use TypeScript if you use Angular. And you can use it with React.

Getting Started: Firebase

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What’s This?

I help you get started with Google’s Firebase. Firebase can replace or complement your back-end. Many of its services are free of charge.

Table Of Contents

• What’s This?
• Firebase Overview
• SDKs & Client Libraries
• Services
  • Authentication (Mostly Free)
  • Cloud Storage ($)
  • App Distribution (Free)
  • Crashlytics (Free)
  • Cloud Firestore ($)
  • Remote Config (Free)
  • Cloud Messaging (Free)
  • A/B Testing (Free)
  • Google Analytics (Free)
  • Performance Monitoring (Free)

Firebase Overview

Firebase is Google’s “Back-end as a Service”. It provides services such as authentication, data storage, push notifications, crash reporting, and beta app distribution. Many services are free of charge.

Getting Started: Declarative UIs

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What’s This?

I help you learn declarative UIs, the state-of-the-art in building user interfaces.

What are Declarative UIs?

Let me explain with a sample application in a video from a talk of mine at JJUG CCC Spring 2021. The section about declarative UIs starts at 5:33 minutes and ends at 10:36 minutes. The player below is set to the right time already:

Getting Started: Flutter

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What’s This?

I help you get started with Google’s Flutter, the most popular cross-platform UI toolkit for building native mobile, desktop, and web applications.

Table Of Contents

• What’s This?
• Alternatives
• Learning Flutter & Dart
  • Learning Dart
  • Installing Flutter
  • Learning Declarative UIs
  • Learning Flutter
• UI
  • Widget Sets
  • Responsive & Adaptive Apps
• Sample Application: Native Look & Feel With Flutter
  • Introduction
  • Getting the Code
  • Source Structure
• Architecture
  • Use Existing Components (Plugins)
  • Write Your Own Components
  • Use Vertical & Horizontal Layers
  • Redux as Global Data Store
• Developer Productivity
• Plugins (Libraries)
  • Plugin Portal
  • Forking Plugins
  • Notable Plugins

Alternatives

Use React Native.

Getting Started: JaVers

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Table Of Contents

• What’s This?
• Getting Started
  • Library & Configuration
  • Create a Version
  • The JaVers Tables
  • Query for All Versions
  • Query For One Version
  • Comparing Versions
  • Counting Changes
  • Versioning Nested Objects
  • Querying Nested Objects
  • Making JSON More Compact
  • Wrap-Up

What’s This?

I help you get started with JaVers, an open-source Java framework for version histories of your domain objects.

Getting Started

So you want to add an audit log to your application with JaVers? Wonderful! You’ve come to the right place!