<listitem><para>Subscribe to the <literal>javaplt</literal> mailing list. You can do so here: <ulink url="https://mailman.rice.edu/mailman/listinfo/javaplt">https://mailman.rice.edu/mailman/listinfo/javaplt</ulink>. This list is the main electronic forum for communication among the team members (like a course discussion board). Feel free to post your ideas or ask for help here.</para></listitem>

<para>If it's not already installed on your system, you can download the JDK from <ulink url="http://java.sun.com">Sun's Web site</ulink>. You will need to have installed both the J2SE JDK 5 and the J2SE SDK 1.4 (note the distinction on the download pages between a Java <emphasis>Runtime Environment</emphasis>, which just contains the tools needed to <emphasis>run</emphasis> Java programs, and a Java <emphasis>Development Kit</emphasis>, which contains a compiler and other tools, in addition to the runtime application). The DrJava sources are written in the Java 5 language. However, in order to support users who only have Java 1.4 installed, the 1.4 SDK is also used in the build process. (Note: theoretically, any Java 5.0 compiler should be able to handle the DrJava sources. However, there are currently some dependencies on Sun's tools in the main DrJava code module, so you will need to have those tools available.)</para>

<para>On the Rice Computer Science department network, the Subversion client is located at <filename>/home/javaplt/packages/RHE4/subversion-1.3.2/subversion/clients/cmdline</filename>.</para>

<para>On the Rice Computer Science department network, Ant is installed in the <filename>/home/javaplt/packages</filename> directory.</para>

<entry><literal>JAVA_HOME</literal></entry>

<entry>Specifies which Java installation Ant should use (not strictly necessary if the correct <command>java</command> command is on the command path).</entry>

<entry>The Ant command generally needs this in order to work correctly (although on some platforms Ant will work fine without it).</entry>

You will see a list of all the documented targets in the project. Note that, due to the dependencies between targets, the <literal>build</literal> target will run <literal>generate-source</literal>, <literal>compile-15</literal>, <literal>compile-14</literal>, <literal>test-14-in-15</literal>, and <literal>jar-14</literal>. That is, it will do everything required to build and test a new application. Try it out:

<title><literal>test-14-in-15</literal></title>

<para>Runs the JUnit tests in <filename>classes/test-14</filename> under Java 5. This will constitute the bulk of the build time. A summary of the running time for each test will be logged, and if a failure occurs, testing will halt immediately. Note that there are also a <literal>test-14</literal> target and a <literal>test-15</literal> target that will not be run by <literal>build</literal>, but that can be invoked manually.</para>

<title><literal>jar-14</literal></title>

<para>Creates the <filename>drjava.jar</filename> file using the Java 1.4-compatible classes. This is the executable application. It will contain a <filename>MANIFEST.MF</filename> file listing the build's unique version number and your user name.</para>