Blog Posts

I write about Java, JavaScript and Web Development. Enjoy.

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• Java 11 Tutorial

  September 24, 2018

  Learn what's new in Java 9 to 11: Local Variable Type Inference, HTTP-Client, Collections, Streams, Optionals, Strings, InputStreams and more.

• Migrate Maven Projects to Java 11

  August 29, 2018

  Learn how to migrate Maven projects from Java 8 to 11 (Jigsaw Module System)

• Kotlin Sequence Tutorial

  July 23, 2018

  Learn functional programming with Kotlin Sequences (filter, map, reduce, ...) in this example-driven tutorial.

• Integrating React.js into Existing jQuery Web Applications

  August 24, 2015

  This article describes a few techniques how to integrate React.js into traditional jQuery single-page-applications.

• Java 8 Concurrency Tutorial: Atomic Variables and ConcurrentMap

  May 22, 2015

  Learn multi-threaded programming with Java 8 by example: This tutorial covers atomic variables and concurrent maps.

• Java 8 Concurrency Tutorial: Synchronization and Locks

  April 30, 2015

  Learn multi-threaded programming with Java 8 by example: This tutorial covers Synchronization, Locks and Semaphores.

• Java 8 Concurrency Tutorial: Threads and Executors

  April 07, 2015

  Learn multi-threaded programming with Java 8 by example: This first tutorial covers Threads, Tasks and Executors.

• Java 8 API by Example: Strings, Numbers, Math and Files

  March 25, 2015

  Learn new Java 8 API features by example. This post covers Strings, Numbers, Math and Files.

• Avoiding Null Checks in Java 8

  March 15, 2015

  This post describes techniques how to prevent null checks and NullPointerExceptions in Java 8 in order to improve null safety and code readability.

• How I've Really Learned Programming

  March 11, 2015

  This is the story how I've really learned programming back in 2001. A summary of do's and don'ts for beginners who want to become a decent programmer.

• Fixing Java 8 Stream Gotchas with IntelliJ IDEA

  March 05, 2015

  Many useful Stream operations are only available via collect. This post describes how to fix this with IntelliJ IDEA.

• Building Isomorphic Webapps on the JVM with React.js and Spring Boot

  February 16, 2015

  How to build isomorphic JavaScript webapps on the Java VM with React.js and Spring Boot.

• The GitHub Matrix

  December 16, 2014

  The latest commits from GitHub visualized in a Matrix-style animation.

• Setup a Git Repository in iCloud Drive

  November 27, 2014

  How to setup a remote git repository in iCloud Drive

• The Future of Javadoc

  November 24, 2014

  A proposal for JEP-225 to improve HTML5 support and usability of the original Javadoc.

• Java 8 Stream Tutorial

  July 31, 2014

  Learn Java 8 streams by example: functional programming with filter, map, flatMap, reduce, collect, lambdas, sequential and parallel streams are covered in-depth in this tutorial.

• Writing Nashorn Command-Line Scripts with Nake

  April 17, 2014

  Nake is a simplified version of Make for Java 8 based on the Nashorn Javascript Engine.

• Using Backbone.js with Nashorn

  April 07, 2014

  An example how to use Backbone.js on the Nashorn Javascript Engine (Java 8)

• Java 8 Nashorn Tutorial

  April 05, 2014

  Learn the Nashorn Javascript Engine (Java 8) by example

• Explore the JDK 8 API

  March 29, 2014

  Discover all new JDK 8 API features

• Java 8 Tutorial

  March 16, 2014

  Learn Java SE 8 by example: Lambda Expressions, Default Interface Methods, Method References, Streams, Date API, Annotations and more

• Fix Icon-Fonts in Firefox for OSX

  July 29, 2013

  Fix icon-fonts in Firefox for MacOSX with with CSS

• Tweak Hibernate Lazy Loading via @BatchSize

  September 07, 2012

  Example how to increase Hibernate performance with lazy loading

• Customize the Eclipse Outline

  October 05, 2009

  Tips how to customize the Eclipse Outline panel

• How to log Hibernate Cache Hits

  October 01, 2009

  An example how to log Hibernate 2nd level cache hits

• 5 Tips for Customizing Eclipse

  September 25, 2009

  5 tips how to customize the Eclipse IDE

• Introduction to Google Collections

  September 14, 2009

  A brief introduction to the Google Collections API.

• Hibernate Preload Pattern

  September 02, 2009

  Describes an approach how to deal with Hibernate lazy loading in complex object graphs

• Optimize Eclipse in 5 Steps

  August 24, 2009

  Tips how to optimize the Eclipse IDE

• Introduction to JMockit

  August 18, 2009

  An example-driven introduction to the JMockit Java library

• Prevent Hibernate LazyInitializationException

  August 15, 2009

  An HQL example how to prevent LazyInitializationException in Hibernate

• Query Several Columns With Hibernate

  August 14, 2009

  An HQL example how to query several columns with Hibernate

• Import Madness

  August 14, 2009

  The crux of equal Java class names

• Separation of Concerns: The Proxy Pattern

  August 13, 2009

  An example how the use the Proxy Pattern in Java

• My Top 10 Eclipse Keyboard Shortcuts

  August 13, 2009

  A few useful Eclipse keyboard shortcuts

• Observer pattern revised: The EventBus

  August 12, 2009

  Introduction to the EventBus library for Swing applications

• Improve Java Swing Drag And Drop Behavior

  August 12, 2009

  How to improve Java Swing Drag and Drop behavior

• Target Platform Issues in Eclipse 3.4

  August 12, 2009

  How to fix Target Platform issues in Eclipse 3.4

• Custom Code Templates in Eclipse IDE

  August 12, 2009

  An example of how to write custom code templates in Eclipse