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UIT2201: Computer Science and Information Technology Revolution
Univ Scholars Programme, NUS

Downloading Kara (and JRE / SDK) (Fall 2003)

Instructions on Downloading Kara and the JRE Environment

http://www.educeth.ch/compscience/karatojava/kara/index.html

If after downloading Kara and double-clicking on it, Kara does not run, then the most likely problem is that you do not have a software called the JRE (Java Runtime Environment) installed on your PC/laptop.

Below, I give some instructions on how to download and install the JRE.

1. First, from Kara page (given above), you click on the link "Information and further downloads" on the right. From that page, you will see

   ... To run the Kara environments, you need the Java J2SE (Java 2 Standard Edition) version 1.2 or higher. There are two variants of the J2SE: The Java Runtime Environment (JRE) is for executing Java programs; the SDK (Software Development Kit) includes a compiler to develop Java programs. The SDK includes also the JRE. Tu run Kara, MultiKara or TuringKara, you need the JRE; to run JavaKara, you need the SDK. Sun offers the JRE and the SDK for many plattforms: http://java.sun.com/j2se/downloads.html On most plattforms, you can start the Kara environments by double-clicking on allkara-en.jar after having installed the JRE or SDK.

2. Now, click on the "downloads.html" link to take you to the "Java 2 Platform, Standard Edition (J2SE)" page of Sun Microsystems. On this page, you should see....

   ... Download The links below will take you to the download sites for the versions of the J2SE platform that are currently available. At each of the sites, you can download the Java 2 SDK, Java 2 Runtime Environment, documentation, and other products related to the J2SE platform. J2SE 1.4.2 J2SE 1.4.1 J2SE 1.3.1 J2SE 1.2.2

3. Now, click on the "J2SE 1.4.2" link to take you to the actual download page for J2SE 1.4.2. Look for the heading "Download J2SE v 1.4.2_01" and the row entitled "Windows Installation".

   You can choose to download just the JRE or the SDK.

   • Those who want to just use Kara and finish the assignment, I suggest you download the JRE (Java Runtime Environment). Click on the "download" link under JRE. [Note: This option requires about 15Mbytes disk space in total.]
   • Those who want to really explore Kara and may even use JavaKara, click the "download" link under SDK to get the Software Development Kit. (This option is not recommended to the novices.) [Note: This option requires about 45Mbytes disk space in total.]

   In either case, save the downloaded "exe" file in some directory.

   Then go to the downloaded file and double-click on it to do the actual installation -- you must be online (preferably with a fast link) to do it.

   Follow the installation instructions from there -- it may take some time to get the stuffs and install (note the file sizes given above).

4. Now, try to run Kara again. It should work.