Many Java ES components require initial configuration before they can be started. For some components, the Java ES installer can perform this initial configuration.
You can choose to have the installer perform this initial configuration (Configure Now option) or to install the software without performing initial configuration (Configure Later option), in which case you have to explicitly configure each installed component after installation is complete.
If you choose to have the installer do the initial configuration, you supply the required configuration information during installation. In particular, you can specify a set of parameter values that are common across all component products, such as an administrator ID and password.