About DrJava

DrJava is a lightweight development environment for writing Java programs. It is designed primarily for students, providing an intuitive interface and the ability to interactively evaluate Java code. It also includes powerful features for more advanced users. DrJava is available for free under the BSD License, and it is under active development by the JavaPLT group at Rice University.

Current Stable Release

The current stable release for DrJava is drjava-beta-20160913-225446. This version supports 7, and 8. You can read the release notes on the SourceForge download page. The Mac OS X app has been removed; it only worked for Apple Java, which ended with Java 6. Mac users should download the Jar file, open the Security and Privacy panel in the System Preferences app, and check the box stating that they want to open the DrJava Jar file, even though is was produced a developer unknown to (unregistered with) Apple. Then the Jar file can be run using the Oracle Java 7 or 8 JDK.

(more download options)


Filing Bug Reports or Feature Requests on SourceForge


Note that you need to log in with your SourceForge account first before you can file a request. If you do not have a SourceForge account, please register yourself at SourceForge. This measure was necessary to reduce the amount of spam we receive from automated "bots".


Over Three Million Downloads of DrJava


We recently passed the milestone of three million downloads of DrJava. There have been

3,338,612

downloads as of 1 Sept 2017. Thank you for making DrJava so successful!

(statistics by SourceForge)

News and Updates

DrJava News and Updates

DrJava Beta Release 20160913-225446

Available for download at http://drjava.org.

DrJava is a lightweight programming environment for Java designed to foster test-driven software development. It includes an intelligent program editor, an interactions pane for evaluating program text, a source level debugger, a unit testing tool, and a new code coverage tool. In addition to bug fixes, this beta release includes two new features introduced since the last stable release:

  1. The new Toolbar button labeled "Coverage" runs all of your unit tests (just like the "Test" button) and determines the code coverage (branches and statements) of these unit tests using Jacoco code coverage tool. It generates and displays pages with links reporting the code coverage of your unit tests.

  2. In the "Edit preferences" menu, the Fonts pane includes two new options: "MenuBar Font" and "ToolBar Font". The MenuBar Font option also controls the font in tab labels in the Tabbed Pane (including "Interactions" and "Find/Replace" among other tabs) below the Definitions window.

Note: Java 6 compatibility has been dropped. To use DrJava, you will need the Java 7 JDK or newer.

Bug fixes since the last stable release:

We have tried to fix some minor bugs some of which have been introduced in recent versions of DrJava. Please report bugs that you encounter using the SourceForge bug reporting and tracking system. We have very limited resources but we will try to address major bugs as quickly as possible and minor bugs that are easy to fix before the next release.

DrJava discussion

When is Java 8 support in the Interactions pane expected?

DrJava

DrJava Stable Release 20130901-r5756

Available for download at http://drjava.org .

DrJava is a lightweight programming environment for Java designed to foster test-driven software development. It includes an intelligent program editor, an interactions pane for evaluating program text, a source level debugger, and a unit testing tool. In addition to bug fixes, this stable release includes a number of new features introduced after the last stable release. Java 5 compatibility has been dropped. To use DrJava, you will need Java 6 or newer.

New features since the last stable release:
- DrJava is now compatible with Java 8 and perhaps with future editions of Java.

Bug fixes since the last stable release:
- DrJava correctly finds and labels Oracle JDK 7 compilers on Mac OS X.

NOTE: Newer releases of Mac OS X include a gatekeeper that will not run unlicensed applications like the former DrJava app. Mac users must download the Jar file and open Security and Privacy panel in the System Preferences app to authorize running it after trying to open it. After you perform this authorization, Mac OS X remembers that this particular Jar file should be allowed to run and will open DrJava normally like other applications.

DrJava Stable Release 20120818-r5686

Available for download at http://drjava.org .

DrJava is a lightweight programming environment for Java designed to foster test-driven software development. It includes an intelligent program editor, an interactions pane for evaluating program text, a source level debugger, and a unit testing tool. In addition to bug fixes, this stable release supports Java 7 in addition to Java 5 and 6. It is nearly identical to the previous beta release.


YourKit Logo The DrJava Team thanks YourKit, LLC for providing free licenses of the YourKit Java Profiler.

Hosted by SourceForge.net DrJava has been partially funded by the National Science Foundation, the Texas Advanced Technology Program, and Sun Microsystems, Inc.