wtf is in Java/JDK/wtf7?
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Slides for a short lightning talk I gave at Near Infinity (www.nearinfinity.com) on what exactly is in JDK7.
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Modularity
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등의 개념을 소개합니다.
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Java7 New Features and Code ExamplesNaresh Chintalcheru This document summarizes new features in Java 7, including underscores in numeric literals to improve readability, try-with-resource for automatic resource management, multi-catch exceptions, and various improvements to I/O, generics, and garbage collection. Key areas covered are numeric literals, collection initialization, try-with-resource blocks, multi-catch exceptions, final rethrow, strings in switch statements, generic instances, NIO2 file APIs, file change notifications, asynchronous I/O, URLClassLoader closing, JDBC row sets, varargs, the G1 garbage collector, and improved performance.
JRuby + Rails = Awesome Java Web Framework at Jfokus 2011
JRuby + Rails = Awesome Java Web Framework at Jfokus 2011Nick Sieger This document summarizes a presentation on using JRuby and Ruby on Rails for web application development. It discusses how JRuby allows Ruby code to drive Java, embed Ruby in Java applications, and compile Ruby to Java bytecode. Rails is presented as a dynamic web framework that uses conventions over configuration and opinionated defaults. The document provides examples of common Rails features like scaffolding, models, controllers and views. It also outlines how to deploy Rails applications as WAR files or to cloud platforms using JRuby.
Nantes Jug - Java 7
Nantes Jug - Java 7Sébastien Prunier The document summarizes an upcoming Java user group meeting to discuss Java 7 features. It will cover new language features in Java 7 like binary literals, string switches, and try-with-resources statements. It will also cover parallel programming enhancements like Fork/Join and NIO.2. The meeting will include hands-on demos of Java 7 features and a discussion of upcoming Java 8 features. Refreshments will be provided by meeting sponsor Ovialis.
Jet presentation
Jet presentationPeter Sellars The document summarizes a Java Emerging Technology (JET) conference held in September 2008. It provides outlines and details on sessions covering topics like Java 7 features and timelines, the EasyB behavior-driven development framework, Scala as an object-oriented functional language, Groovy as a dynamic language, Grails as a web application framework, developments in J2ME, and the Android mobile platform. Examples of code were provided for many of the sessions to demonstrate the technologies.
A topology of memory leaks on the JVM
A topology of memory leaks on the JVMRafael Winterhalter While most bugs reveal their cause within their stack trace, Java’s OutOfMemoryError is less talkative and therefore regarded as being difficult to debug by a majority of developers. With the right techniques and tools, memory leaks in Java programs can however be tackled like any other programming error. This talks discusses how a JVM stores data, categorizes different types of memory leaks that can occur in a Java program and presents techniques for fixing such errors. Furthermore, we will have a closer look at lambda expressions and their considerable potential of introducing memory leaks when they are used incautiously.
What`s new in Java 7
What`s new in Java 7Georgian Micsa New features in:
1. Java programming language
2. Java I/O
3. Concurrency
4. Swing
5. Networking
6. Security
7. Collections
8. RIA
9. Java 2D
10. JDBC 4.1
11. JVM
12. java.lang package
13. Java XML
14. I18N
JRuby with Java Code in Data Processing World
JRuby with Java Code in Data Processing WorldSATOSHI TAGOMORI JRuby allows developers to write plugins for data processing systems like Norikra and Embulk in Ruby while taking advantage of Java libraries and the JVM. Norikra is a stream processing system that allows SQL queries over data streams. It is written in JRuby and uses the Java Esper library. Embulk is an open-source ETL tool that loads data between databases and file formats using plugins. Both systems use a plugin architecture where plugins can be written in JRuby or Java and are distributed as Ruby gems. This allows for a pluggable ecosystem that benefits from Ruby's productivity while utilizing Java libraries and the JVM's performance.
[Strukelj] Why will Java 7.0 be so cool![[Strukelj] Why will Java 7.0 be so cool](https://cdn.slidesharecdn.com/ss_thumbnails/trukelj-why-will-java-70-be-so-cool-1223970692488287-9-thumbnail.jpg?width=560&fit=bounds)
[Strukelj] Why will Java 7.0 be so cooljavablend The document discusses planned features and enhancements for Java SE 7, including a new module system, language enhancements like closures and strings in switch statements, API updates like New I/O version 2 and JMX 2.0, and other additions like a new garbage collector and JavaFX for rich clients. The release is expected in summer 2009 and will focus on multiple language support, modularity, and rich clients, as well as usual API updates and performance improvements.
Testing with Node.js
Testing with Node.jsJonathan Waller An introduction on testing Node.js code.
Covers frontend (UI) testing, backend unit tests and code coverage.
Also mentions how to use a Makefile to run frontend and backend tests at the same time.
Gatling - Paris Perf User Group
Gatling - Paris Perf User Groupslandelle This document summarizes new features and improvements planned for the Gatling load testing tool. Key points include:
- Adopting an actor model to represent scenario workflows as sequences of asynchronous actors.
- Refactoring the expression language to type check values and return failures instead of exceptions.
- Improving resource fetching to better approximate how browsers parallelize asset loading instead of sequential requests.
- Enhancing checks like regular expressions to support returning tuples instead of just strings.
- Simplifying templating to use string interpolation and external template files with expression language instead of Scalate.
RxJS101 - What you need to know to get started with RxJS tomorrow
RxJS101 - What you need to know to get started with RxJS tomorrowViliam Elischer This document provides an overview of RxJS, a library for composing asynchronous and event-based programs using observable sequences. It discusses key RxJS concepts like Observables, Observers, Operators, and how to create and use Observables. It also provides learning resources and highlights improvements in RxJS 5 like compliance with the Observable specification and better performance.
JBoss AS Upgrade
JBoss AS Upgradesharmami JBoss AS7 is a major re-write of the JBoss application server with a modular architecture and improved performance. Key features include HornetQ as the default JMS provider, the JBoss module system for classloading, and support for CDI, JSF, RESTEasy and other Java EE 6 specifications. Testing can be simplified using Arquillian which integrates tests directly with the application server container. Migrating from earlier versions of JBoss AS requires changes to configuration, dependencies and tooling.
Collections forceawakens
Collections forceawakensRichardWarburton Java collections such as ArrayList and HashMap were discussed. Common problems with collections like concurrent modification exceptions were presented along with scenarios demonstrating check-then-act bugs. Immutable and persistent collections were described as alternatives that reduce bugs by restricting state changes. Tradeoffs between different collection implementations like memory usage and performance were examined.
Getting started with Clojure
Getting started with ClojureJohn Stevenson A simple introduction to the Clojure programming language. A talk given at the Spring 2011 edition of the JAX London conference.
Lobos Introduction
Lobos IntroductionNicolas Buduroi A presentation to introduce the Lobos project made at the Bonjure group meeing on 2011/01/21. For more information on Lobos, visit the website: http://budu.github.com/lobos/
Modern Java Development
Modern Java DevelopmentAngel Conde Manjon This document provides an overview of Maven, Java 8 features, logging, useful libraries, and testing in Java. It discusses how Maven can help solve dependency issues, key Java 8 additions like lambdas, streams and default methods. Logging with SLF4J and Logback is explained. Popular libraries like Lombok, Guava and Apache Commons are mentioned. Finally, unit testing with JUnit and mocking with Mockito is covered at a high level.
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More from Scott Leberknight (6)
JShell & ki
JShell & kiScott Leberknight Slides for a short "mini talk" on using JShell, with a tiny bit on ki (Kotlin interactive shell). JShell and ki are REPLs for Java and Kotlin.
JUnit Pioneer
JUnit PioneerScott Leberknight A presentation on JUnit Pioneer given at Fortitude Technologies on Mar. 4, 2021. JUnit Pioneer is an extension library for JUnit 5 (Jupiter).
Sample code on GitHub at:
https://github.com/sleberknight/junit-pioneering-presentation-code
JUnit Pioneer home page:
https://junit-pioneer.org
JDKs 10 to 14 (and beyond)
JDKs 10 to 14 (and beyond)Scott Leberknight This document summarizes the recent and upcoming Java Development Kit (JDK) releases from JDK 10 through JDK 17. It provides an overview of the release schedule and timelines for long-term support releases. It also describes some of the major new features and language projects included in recent and upcoming JDK versions, such as switch expressions, text blocks, records, and value types. References are provided for further information on the Java release cadence and new features.
Unit Testing
Unit TestingScott Leberknight The document discusses unit testing and its benefits and limitations. It notes that while tests provide confidence that code works as intended, they cannot prevent all problems. The Boeing 737 MAX crashes are discussed as an example of issues despite passing tests due to sensor problems. Proper unit testing involves automated, repeatable, and continuous testing of isolated units with mocked dependencies. Test-driven development and design can lead to more testable and maintainable code, but tests also have costs and limitations.
SDKMAN!
SDKMAN!Scott Leberknight A short presentation slide deck on SDKMAN!, the SDK version manager. You can find SDKMAN! at its website, https://sdkman.io/
SDKMAN! is a tool to manage multiple versions of multiple software development kits (SDKs) like Java, Kotlin, Groovy, Scala, etc.
JUnit 5
JUnit 5Scott Leberknight The document discusses JUnit 5, the next generation of the JUnit testing framework for Java. Key aspects include a new programming model using extensions, support for Java 8 features, and ways to migrate from earlier JUnit versions. The new framework consists of the JUnit Platform launcher, the JUnit Jupiter API for writing tests, and the JUnit Vintage engine for running JUnit 3 and 4 tests.
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Hands On: Create a Lightning Aura Component with force:RecordData
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DevOpsDays Atlanta 2025 - Building 10x Development Organizations.pptx
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10x developers may be a myth, but 10x organizations are very real, as proven by the influential study performed in the 1980s, ‘The Coding War Games.’
Right now, here in early 2025, we seem to be experiencing YAPP (Yet Another Productivity Philosophy), and that philosophy is converging on developer experience. It seems that with every new method we invent for the delivery of products, whether physical or virtual, we reinvent productivity philosophies to go alongside them.
But which of these approaches actually work? DORA? SPACE? DevEx? What should we invest in and create urgency behind today, so that we don’t find ourselves having the same discussion again in a decade?
Semantic Cultivators : The Critical Future Role to Enable AI
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AI Changes Everything – Talk at Cardiff Metropolitan University, 29th April 2...
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https://alandix.com/academic/talks/CMet2025-AI-Changes-Everything/
Is AI just another technology, or does it fundamentally change the way we live and think?
Every technology has a direct impact with micro-ethical consequences, some good, some bad. However more profound are the ways in which some technologies reshape the very fabric of society with macro-ethical impacts. The invention of the stirrup revolutionised mounted combat, but as a side effect gave rise to the feudal system, which still shapes politics today. The internal combustion engine offers personal freedom and creates pollution, but has also transformed the nature of urban planning and international trade. When we look at AI the micro-ethical issues, such as bias, are most obvious, but the macro-ethical challenges may be greater.
At a micro-ethical level AI has the potential to deepen social, ethnic and gender bias, issues I have warned about since the early 1990s! It is also being used increasingly on the battlefield. However, it also offers amazing opportunities in health and educations, as the recent Nobel prizes for the developers of AlphaFold illustrate. More radically, the need to encode ethics acts as a mirror to surface essential ethical problems and conflicts.
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Role of Data Annotation Services in AI-Powered Manufacturing
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Precision in data labeling = Precision on the production floor.
Buckeye Dreamin' 2023: De-fogging Debug Logs
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Build Your Own Copilot & Agents For Devs
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TrustArc Webinar: Consumer Expectations vs Corporate Realities on Data Broker...
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This session will explore the research findings from TrustArc’s Privacy Pulse Survey, examining consumer attitudes toward personal data collection and practical suggestions for corporate practices around purchasing third-party data.
Attendees will learn:
- Consumer awareness around data brokers and what consumers are doing to limit data collection
- How businesses assess third-party vendors and their consent management operations
- Where business preparedness needs improvement
- What these trends mean for the future of privacy governance and public trust
This discussion is essential for privacy, risk, and compliance professionals who want to ground their strategies in current data and prepare for what’s next in the privacy landscape.
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AI and Data Privacy in 2025: Global Trends
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This infographic contains:
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Leading AI Innovation As A Product Manager - Michael Jidael
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In this deck, you'll discover:
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- The fundamental paradigm shift required for AI product development.
- A framework for identifying high-value AI opportunities for your products.
- How to transition from user stories to AI learning loops and hypothesis-driven development.
- The essential AI product management framework for defining, developing, and deploying intelligence.
- Technical and business metrics that matter in AI product development.
- Strategies for effective collaboration with data science and engineering teams.
- Framework for handling AI's probabilistic nature and setting stakeholder expectations.
- A real-world case study demonstrating these principles in action.
- Practical next steps to begin your AI product leadership journey.
This presentation is essential for Product Managers, aspiring PMs, product leaders, innovators, and anyone interested in understanding how to successfully build and manage AI-powered products from idea to impact. The key takeaway is that leading AI products is about creating capabilities (intelligence) that continuously improve and deliver increasing value over time.
How Can I use the AI Hype in my Business Context?
How Can I use the AI Hype in my Business Context?Daniel Lehner 𝙄𝙨 𝘼𝙄 𝙟𝙪𝙨𝙩 𝙝𝙮𝙥𝙚? 𝙊𝙧 𝙞𝙨 𝙞𝙩 𝙩𝙝𝙚 𝙜𝙖𝙢𝙚 𝙘𝙝𝙖𝙣𝙜𝙚𝙧 𝙮𝙤𝙪𝙧 𝙗𝙪𝙨𝙞𝙣𝙚𝙨𝙨 𝙣𝙚𝙚𝙙𝙨?
Everyone’s talking about AI but is anyone really using it to create real value?
Most companies want to leverage AI. Few know 𝗵𝗼𝘄.
✅ What exactly should you ask to find real AI opportunities?
✅ Which AI techniques actually fit your business?
✅ Is your data even ready for AI?
If you’re not sure, you’re not alone. This is a condensed version of the slides I presented at a Linkedin webinar for Tecnovy on 28.04.2025.
wtf is in Java/JDK/wtf7?
- 1. wtf is in Java/JDK/wtf 7 ??? Scott Leberknight
- 2. "Making Java suck (a little) less..."
- 4. // old way (deprecated) File file = new File("foo.txt"); // new way Path path = Paths.get("foo.txt"); Path path = file.toPath(); java.nio.file
- 5. Files (finally, you can copy a file...only took ~15 years) FileSystem(s) FileStore
- 6. scalable, asynchronous I/O (AsynchronousChannel & friends) socket-channel binding & config (NetworkChannel & friends)
- 8. invokedynamic invokestatic invokespecial invokevirtual invokeinterface invokedynamic (new) "...an invokedynamic instruction is used to call methods which have linkage and dispatch semantics defined by non-Java languages..." - http://www.infoq.com/articles/invokedynamic
- 10. strings in switch switch (action) { case "Red": stop(); break; case "Yellow": slowDown(); break; case "Green": go(); break; case "Blue": danceAJig(); break; }
- 11. binary literals int clutchSong = 0b10001110101; http://www.amazon.com/Robot-Hive-Exodus-Clutch/dp/B0009NSE1K
- 12. short/byte literals byte b = 42y; short s = 32767s;
- 13. underscores in numeric literals long max = 9_223_372_036_854_775_807L; int song = 0b0100_0111_0101;
- 14. multi-catch try { // code... } catch (FileNotFoundException | NoSuchFileException | AccessDeniedException ex) { // handle... }
- 15. final re-throw try { actionThatThrowsIOException(); actionThatThrowsSQLException(); } catch (final Exception e) { // handle... throw e; // IOException or SQLException }
- 16. ARM (automatic resource management) try (InputStream is = url.openStream(); OutputStream os = new FileOutputStream(file)) { // use resources... } (AutoCloseable)
- 17. diamond operator Map<String, Map<Integer, List<String>>> things = new HashMap<>();
- 18. modified JSRs Java Compiler API (jsr 199) JAXP 1.3 (jsr 206) JAXB 2.2 (jsr 222) JAX-WS 2.2 (jsr 224) Pluggable Annotation Processing (jsr 269)
- 19. honorable mention java.util.Objects jsr166y - Concurrency & collections updates Enhanced JMX agent and MBeans Autoloading of JDBC drivers Method to close a URLClassLoader JDBC 4.1
- 20. assembly-coding Class Loader architecture updates (parallel-capable) Strict class file checking Elliptic curve cryptography (ECC) New garbage collector (lower pause times & better predictability than current CMS collector)
- 21. deferred until JDK 8 (sometime next century)
- 22. Project Lambda re d r (a.k.a. closures) de fe Collection Literals List<Integer> items = [1, 2, 3, 4, 5]; Modularity (JSR 294 modules, formerly superpackages)