install4j offers two types of installers:
- Regular installer
This generates standalone installer. The following options related to updates are available for
- Detect previous installation directory
If a previous installation can be detected on the computer,
the installer will suggest the directory of that previous installation. In that case, the
"Welcome" screen will ask the user if the previous installation should be updated. This
question can be suppressed in the configuration of the "Welcome" screen.
- Add-on installer
This generates an installer that can only be installed on top of
an installation of a certain installation. An add-on installer doesn't have a
separate uninstaller. This is useful to distribute patches and enhancements.
If the add-on installer type is selected, you have to enter an application ID
for the base application in the text field below. With the ...
chooser button, you can select an install4j project file from your file system,
and extract its application ID.