ADDITIONAL SYSTEM INFORMATION :
JAR creation failed. See details for additional information.
  No resources selected
  Jar export finished with problems. See details for additional information.
    Could not find main method from given launch configuration.


A DESCRIPTION OF THE PROBLEM :
jdk-10.0.1 can not export runnable Jar file, while jdk1.8.0_172 work well.

I used [Spring Tool Suite ,Version: 3.9.4.RELEASE, Build Id: 201804120921, OS: Windows 10, v.10.0, x86_64 / win32]

project-->right click-->Export--> Runnable JAR file
Launch configuration is ok,
Library handling: is Package required ...

use jdk1.8.0_172, I can get the right jar
use jdk-10.0.1, the message is
JAR creation failed. See details for additional information.
  No resources selected
  Jar export finished with problems. See details for additional information.
    Could not find main method from given launch configuration.