In the z/OS Projects
view, expand the list of projects, subprojects, and folders to display
the main source file.
Right-click that file and click Nominate as
Entry Point.
Right-click the project and click Rebuild Project.
If the build is unsuccessful, build errors are presented
as entries in the Remote Error List view. Double-click an entry in
the Remote Error List view to open the source file in which the related
error is found.
If the build is successful, a DLL file (file extension .dll or .ibmcob)
or an executable file (file extension .exe) is
available in the BuildOutput folder; to run the
executable, double-click the name of the executable.