The Oracle Forms Web client is a Java applet hosted within a browser. Oracle Forms 11g or later uses the standard Java Virtual Machine (JVM), while for version 10g or earlier, Oracle provides its own JVM, which is called JInitiator.
A JVM or JInitiator is installed automatically when you access an Oracle Forms Web application for the first time. There are different versions of JInitiator, where the version numbers reflect the Java Runtime Environment version numbers that are used, for example JInitiator 1.1.8 uses Java Runtime Environment 1.1.8).
For detailed information on Oracle Forms and Oracle Applications, visit the Oracle Technology Network.