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For example, syntax highlighting is minimal and there is no code completion. There are very few features available in DrJava that would expect from an integrated development environment. It has a user-friendly and intuitive interface. The IDE was created for teaching purposes, it is designed to be easy to use. Then hit Apply > OK.DrJava was created for educational purposes and is designed to be simple for those who are just learning.
On the junit-4.1.jar file in the lib folder. In the popup window, in the field Extra Classpath, hit Add then clicked Opened DrJava, and hit Edit > Preferences > Resource Locations. Using a different jdk, then store it in the appropriate place.)ģ. Copied it into C:\Program Files\Java\jdk1.5.0_10\lib. Downloaded file junit-4.1.jar (you can do it by clicking the link).Ģ. He got the error message: package amework does not exist. One student reported not being able to create and use a JUnit tester Uninstall SDK4.7 and download JDK 5.0 and use its tools.jar. If your computer has jre5.0, then it cannot use It may mean that your computer has two different systems on it and isĪn inconsistent state. Please remove or make sure it appears in the correct subdirectory of The ProgramLive lectures! They are short and informative.ĭo you get a message that looks like this?īad class file: C:\Program Files\Java\jre1.5.0\lib\rt.jar(javax/swing/JFrame.class)Ĭlass file has wrong version 49.0, should be 48.0 Second, information on using DrJava is in Appendix I of the course textĪnd in Chapter 19 Chapter 19 of the accompanying CD ProgramLive. The demos given in class and in the demo sessions should help, if you On OS X or Windows, download the appropriate application.On many platforms, you can simply double-click the jar file to start.From the command line, you can type: java -jar drjava-stable-20061025-1556.jar.Then type or browse to the correct location. To do so, follow these menu items: Edit / Preferences / Resource Locations / Tools.jar Location. If you didn't set the correct path for the file tools.jar at installation time, set it after installation by going through DrJava's Preferences option. You can also use a desktop tool to search for this file on your computer. On a PC, it is in some place likeĬ:\Program Files\Java\jdk1.5.0_04\lib\tools.jar If the system tells you that it cannot find a file called tools.jar, you need to select the correct Link and select "Save Link As" (or the equivalent in your browser). If you do, just right-click on the DrJava download
Dr. java download archive#
Warning: you may get a dialog saying something about a "JAR archive You'll be sent to select a location (mirror) from which to download DrJava. On a Windows PC, click either on the jar file or on Stable Windows App. Use the Current Stable Release (runs with JDK1.5.0, see above). This version should work whether you have Java 1.4.2 or Java 1.5,Īlternatively, download the latest version of DrJava from this
The easiest thing for you to do is to download this version of DrJava: to translate them into a "machine language" so they can be run by the Java Runtime Environment. The Jav Development Kit allows you to "compile" Java programs -i.e. The Java Runtime Environment allows you to run Java programs, for example, Java programs that are contained in "jar files". This give you the Java Runtime Environment (JRE) AND the Java Development Kit (JDK). Several download options will be offered. The JDK yet, and you can download it here. Using a PC running a version of Windows, chances are that you don't have JDK installed already, so you don't have to download it.
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If you have a Macintosh with Mac OS X, you almost certainly have the
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You will need the Java software development kit (JDK) from the Sun website.