rdisp/autojavatime is a SAP Parameter attribute which is used to control Specifies the time cycle in seconds autojava is running information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
This parameter controls the time internal in which the "Auto-Java"
actions are executed within the VMC (Virtual Machine Container). These
are defined in com.sap.vmc.autojava.impl.internal.AutoJavaStarter.
Parameter value 0 deactivates the execution: The Java method is executed
every n seconds for values n > 0.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.