Installing JDK Vijayan Sugumaran Department of DIS Oakland University

Downloading JDK  The JDK (J2SE v5.0) installer can be downloaded from the following url:  Click on the Download button corresponding to JDK 6 Update 2. On that page there are other options if you want the netBeans IDE or the Enterprise Edition, etc.  Click on Accept (license agreement) and continue  Click on the link that says:  Windows Offline Installation, Multi-language  This is a self extracting file  Double click on the installer to start the installation of JDK  Accept all the default settings. It will create a new directory called jdk1.6.0_02 where you specified and there will be a subdirectory called “bin” which will contain all the jdk tools (javac, java, etc.). There will also be another subdirectory called “lib” which is where we will put all the.jar files

Setting Environment Variables  In order to access the java binary files from any directory, we should set the PATH environment variable  To access.class files from other locations, we need to set the CLASSPATH variable.  The CLASSPATH variable can also indicate where to look for.jar files

Setting Path and Classpath  Right mouse click on “My Computer” and select the “Properties” option  The system properties panel will pop up. Click on the “Advanced” tab.  Click on the “Environment Variables” button  If the Path and Classpath variables are already defined, then you can add values at the end by clicking on the “Edit” button.  The directories are separated by semicolon  If the variables don’t exist, then you can create them by clicking on the “New” button, and enter the values for those variables (see next slide)  The first value for the classpath variable should be “.;” that indicates current directory

System Properties Panel