2.3 Installing a Java Virtual Machine

Daisy requires either the Java SDK 1.4.2 or the Java JDK 5.0.

You can download the Java JDK 5.0 from here on the Sun site (take 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 (ie, 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 "1.4.2_xx"

or

java version "1.5.0"

2.3.1 Installing JAI (Java Advanced Imaging) -- optional, Java 1.4 only

If you want images (especially PNG) to appear in PDFs, it is highly adviceable to install JAI, which you can download from the JAI homepage. Just take the "JDK Install" option, this will make JAI support globally available.