2.3 Installing a Java Virtual Machine

Daisy requires the Java JDK or JRE 1.5 or 1.6 (the versions are also know as 5 or 6). You can download it from here on the Sun site (take by preference the JDK, not the JRE). Install it now if you don't have it already.

After installation, make sure the JAVA_HOME environment variable is defined and points to the correct location (i.e., the directory where Java is installed). To verify this, open a command prompt or shell and enter:

For Windows:
%JAVA_HOME%/bin/java -version

For Linux:
$JAVA_HOME/bin/java -version

This should print out something like:

java version "1.5.0"

or

java version "1.6.0"

2.3.1 Installing JAI (Java Advanced Imaging) -- optional

If you want images (especially PNG) to appear in PDFs, it is highly advisable to install JAI, which you can download from the JAI project on java.net. Take the JDK (or JRE) package, this will make JAI support globally available.