Category Archives: DrJava

My work on DrJava, the Java IDE developed at Rice.

DrJava’s Most Annoying Bug is Sun’s JVM Bug

Posted on October 8, 2009 by Mathias

Corky just notified me that the very pesky ArrayIndexOutofBoundsException in DrJava that has been reported in numerous bug reports (assigned to be duplicates of the first report, 2831821: Caret updating is broken) is actually a JVM bug, not a bug … Continue reading →

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String Comparisons for Common Words Are Bad

Posted on October 5, 2009 by Mathias

It has been a long time since the last item went on the code pranger. I’ve pulled my hair out over many things during the last months, but this is the first time in a long while that I slapped … Continue reading →

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Hudson Moved to Denmark

Posted on October 5, 2009 by Mathias

I just migrated our Hudson continuous integration server from my workstation (finland.cs, now a Dell Studio 435 with a 2.66 GHz i7 — thanks Corky!) to denmark.cs, a dedicated server (my former workstation, a Dell Dimension 9200 with a 3 … Continue reading →

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All in One File!

Posted on October 5, 2009 by Mathias

After integrating Mint into DrJava last week, we have now made it even simpler to experiment with Mint: You can download a copy of DrJava that already includes the Mint compiler, all in one file: DrJava with Mint (check the … Continue reading →

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Short DrJava Review on SourceForge

Posted on September 29, 2009 by Mathias

Someone wrote on SourceForge about DrJava: This program is excellent for its’ intended use. Best part is that you can put it on a memory stick and run it. Thanks! I concur.

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DrJava with Mint Released

Posted on September 29, 2009 by Mathias

The latest releases of DrJava contains a compiler adapter for Mint. That means it is possible to conveniently compile Mint programs in the DrJava IDE. To experiment with Mint and DrJava, please do the following: Download DrJava with Mint the … Continue reading →

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DrJava Mint Branch Merged Back into Trunk

Posted on September 28, 2009 by Mathias

I just merged the trunk-mint branch of DrJava back into the trunk and made a new weekly release (@ I actually issue these “weakly” releases more often than just weekly. It’s just a convenient mechanism to benefit from the auto-update … Continue reading →

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Running Mint Programs in DrJava

Posted on September 25, 2009 by Mathias

I have now managed to hack DrJava and Mint together. I still have to improve the source, because right now a few things are hard-coded, but it is a working proof-of-concept. Welcome to DrJava. Working directory is C:\Program Files\JavaMint\langtools\mintTest > … Continue reading →

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Mint and DrJava Class Loader Issues

Posted on September 24, 2009 by Mathias

I’m still trying to integrate Mint into DrJava, and I’m running into a problem with the class loaders in Mint and DrJava. If I understand the class loader inside the Interaction JVM correctly (a PathClassLoader, I believe), it can change … Continue reading →

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DrJava with Mint Compiles on Windows, Mac and Linux

Posted on September 23, 2009 by Mathias

The DrJava built from my trunk-mint branch now manages to compile Mint programs on all three major operating systems: Windows, Mac and Linux. I had to make a bugfix in the Mint compiler (I will make a new release soon), … Continue reading →

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DrJava with Mint on Mac “Cosmetically” Closer

Posted on September 23, 2009 by Mathias

Sweet! DrJava with Mint on the Mac just came within reach, or at least as close as it is on the other operating systems. For some reason, when I ran DrJava under Soylatte and X11 earlier, no compilers showed up. … Continue reading →

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Mint in DrJava is Tricky

Posted on September 22, 2009 by Mathias

I’ve been trying to get the Mint compiler to work inside DrJava. This has turned out to be more tricky than I thought. The preempting class loader that we use to load different compiler adapters is still giving me headaches, … Continue reading →

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SIGCSE 2010 Paper Submitted

Posted on September 11, 2009 by Mathias

Now I’ll take a break, then I’ll proof-read it … Continue reading →

Posted in Concurrent Unit Testing, DrJava, Mint, Uncategorized | 1 Comment

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850,000 Downloads of DrJava

Posted on September 11, 2009 by Mathias

DrJava hit 850,000 downloads today. We should b… Continue reading →

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Power Using a for Loop

Posted on September 9, 2009 by Mathias

Soon it will be possible to compile and run Min… Continue reading →

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APCS Video Tutorial with DrJava

Posted on August 23, 2009 by Mathias

I found a video tutorial by Chris Thiel that us… Continue reading →

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New DrJava Stable Release: drjava-stable-20090821-r5004

Posted on August 21, 2009 by Mathias

We have made a new stable version available: dr… Continue reading →

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Daemon Threads in DrJava’s Interactions Pane

Posted on August 19, 2009 by Mathias

I’m working on integrating ConcJUnit into DrJav… Continue reading →

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OpenJDK Incompatibilities

Posted on August 17, 2009 by Mathias

It seems like we have some incompatibilities wi… Continue reading →

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New DrJava Beta Release: drjava-beta-20090803-r4975

Posted on August 3, 2009 by Mathias

We have made a new beta version available: drja… Continue reading →

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