A workbench is structured with Organization Units, VFS repositories and Projects:   Organizational Unit On the main screen, click the “Administration” link or the menu Authoring/Administration: You will see: Select Organization Unit, and +Add button: and after OK:   Create Repository You must set the…

Environment Fedora 25+ You can use some other SO. Wildfly 10.0.0.Final Install Wildfly 10.0.0.Final Download and unpack Add user (I used martin): ./add-user.sh -a -u martin -p **** -ro admin,developer ./add-user.sh -a -u kieserver -p **** -ro admin,kie-server,rest-all,kiemgmt Install KIE Workbench For details see http://drools.org/download/download.html…

https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html public final class Optional extends Object Optional is a container object used to contain not-null objects. Optional object is used to represent null with absent value. This class has various utility methods to facilitate code to handle values as ‘available’ or ‘not available’ instead…

Functional interfaces provide target types for lambda expressions and method references. Package – java.util.function. https://docs.oracle.com/javase/8/docs/api/java/util/function/package-summary.html The interfaces in this package are general purpose functional interfaces used by the JDK, and are available to be used by user code as well. While they do not identify…

Default methods enable developers to add new functionalities to interfaces without breaking the existing implementation of these interfaces. Default methods are implicitly public. It provides flexibility to allow interface define implementation which will use as default in the situation where a concrete class fails to…

A functional interface is an interface that contains only one abstract method. Lambda expression can be used to represent the instance of a functional interface. Any interface with a single abstract method is a functional interface, and its implementation may be treated as lambda expressions.…