Dr. Dobb's JVM Languages Blogs

Working with Java's BigDecimal

Tue, 12 Aug 2014 10:31:00 -0400

I've found BigDecimal a bit harder to use than either Java's double primitive type or Double class.

Java's Floating-Point (Im)Precision

Thu, 24 Jul 2014 07:41:00 -0400

Java doesn't store, calculate, or return the exact representation of the actual floating-point value in some cases.

JavaFX 8: Combining Language Features, Part 2

Mon, 02 Jun 2014 08:20:00 -0400

In this installment, we'll add the ability to move files around via drag-and-drop (something JavaFX easily implements), and open files for viewing and editing using JavaFX controls.

JavaFX 8: Combining New Language Features: Part 1

Wed, 14 May 2014 17:06:00 -0400

Java SE 8 introduced new language features, library changes, and a whole lot more. This includes a new version of JavaFX (version 8), and you can use the new language features with JavaFX 8. Let's begin with Lambdas, working with a sample application I wrote about some time ago: the custom SizeView container.

Java 8 Adoption Poll Results

Fri, 04 Apr 2014 11:49:00 -0400

Results suggest a great interest in the new features, perhaps even a pent-up demand for them.

Java and Network Port Restrictions

Thu, 03 Apr 2014 11:01:00 -0400

I've recently run into issues running JavaDB or Apache Derby with the latest Java SE 1.6 and Java SE 7 updates and now with Java SE 8.

Java SE 8 Beyond Lambdas: The Big Picture

Mon, 31 Mar 2014 12:33:00 -0400

In addition to Lambdas, Java 8 features changes to the way annotations are handled, array processing, VM size, garbage collection, and so much more.

JAX-RS: Easily Bridge Platforms with Services and JSON

Mon, 03 Feb 2014 06:17:00 -0500

JAX-RS helps bridge the worlds of JavaScript and mobile technology by transparently handling the JSON details.

"Failure: Trying to Control Java GC"

Mon, 20 Jan 2014 06:51:00 -0500

I recently had the brilliant idea that I could control the Java garbage collector, in an attempt to avoid it from interrupting some time-critical code.

Java Communications Without JNI

Fri, 20 Dec 2013 12:17:00 -0500

PureJavaComm by Spare Time Labs is a pure Java alternative to RXTX — thanks to Al Williams for pointing this out to me.

OO as a Prerequisite to Agile

Wed, 18 Dec 2013 18:24:00 -0500

Agile and OO (at least when defined as a model-driven approach to architecture) are intimately connected, and good OO structure is essential if you want true agility.

A Gentle Introduction to Agile

Wed, 11 Dec 2013 13:20:00 -0500

After reading Allen Holub's post on Scrum and Agile, I thought it would be a good opportunity to provide an overview of the Agile methodology for those who might need it.

Write Once, Debug on Arduino

Fri, 06 Dec 2013 13:18:00 -0500

Can you run Java programs on the Arduino? Maybe.

Handling Arduino Events in Java

Mon, 25 Nov 2013 15:11:00 -0500

It's possible to handle continuous events from an Arduino. Let's see how.

Control an Arduino from Java

Wed, 13 Nov 2013 08:22:00 -0500

You can communicate with and control an Arduino from Java running on another computer.

Java and IoT In Motion

Thu, 03 Oct 2013 11:19:00 -0400

At JavaOne last week, I was involved in the construction of the Internet of Things (IoT) concept project called "IoT In Motion."

NetBeans 8 and IoT Development

Fri, 27 Sep 2013 11:48:00 -0400

This week at JavaOne, Oracle spoke a lot about what's going into the Java 8 suite of releases.

Making HTTP Requests From Java

Mon, 09 Sep 2013 14:14:00 -0400

Continuing the Java network communication theme, let's examine how to make HTTP requests from a Java application, including how to add header parameters and proxy information.

Real-Time List Filtering in HTML5/JavaScript

Mon, 12 Aug 2013 11:22:00 -0400

I recently rewrote code in JavaScript that demonstrates how to easily search for an item in a listbox, where the total list of items are narrowed down as you type.

Increase Java Serialization Performance

Tue, 30 Jul 2013 14:17:00 -0400

The simplest way to send and receive a Java object is to use an ObjectOutputStream/ObjectInputStream object pair, but is it the most efficient way? Let's experiment.

JDK 8 Now Feature Complete

Mon, 01 Jul 2013 15:30:00 -0400

There are still a few milestones to go before JDK 8 is released as Java SE 8, but we're inching closer.

Java and the Internet of Things

Wed, 26 Jun 2013 01:28:00 -0400

Technology continues to get smaller and faster, and we increasingly find new ways to integrate it into our lives.

Java Apps on the Raspberry Pi

Tue, 21 May 2013 20:43:00 -0400

Here is an update on my ongoing project, where I use Java on a Raspberry Pi to control an Arduino, which in turn will control some other electrical device

Java SE 8 Schedule Update

Fri, 19 Apr 2013 16:49:00 -0400

Yes, the release of Java SE 8 (JDK8) has slipped again. But it's for good reason: platform-wide security enhancements.

Periodic Thread Processing in Java

Mon, 25 Mar 2013 05:00:17 -0400

In an earlier blog where I discussed how to handle uncaught Java exceptions in other threads, I had a minor bug in my example code.