Installing BIRT iHub : Understanding the iHub installation environment : About the Java Software Development Kit
 
About the Java Software Development Kit
The iHub installation routine installs the JDK files in:
/Program Files (x86)/Common Files/Actuate/22.0/JDK160
To use a different JDK with iHub, change the files in the installation directory or change the values of the following environment variables:
*AC_JAVA_HOME
*AC_JVM_HOME
*AC_JRE_HOME
*AC_JRE64_HOME
Using an earlier release of JDK can cause some Actuate features to fail or to work improperly. For example, using an earlier release of JDK can cause Actuate products to display charts incorrectly.
The following types of Actuate executable files use AC_JRE_HOME and AC_JVM_HOME:
*Files containing charts use AC_JVM_HOME to locate the java.exe to generate the chart.
*Files using the Actuate Java Object Interface use AC_JVM_HOME to locate the JVM DLL or library.