Demonstration of private methods in Interfaces - Java 9 feature

Interface Private methods

jshell> public interface Sample {
   ...> default void doSomeThing(String message) {
   ...>  //Call private method
   ...>    doSomeThing();
   ...>   System.out.println("The deafult interface method!!!");
   ...>
   ...> }
   ...>
   ...> private void doSomeThing() {
   ...> System.out.println("Demonstration of interface private methods!!!");
   ...> }
   ...> }
|  created interface Sample

jshell> public class SampleImpl implements Sample {
   ...> }
|  created class SampleImpl

jshell> Sample s = new SampleImpl();
s ==> SampleImpl@4bec1f0c

jshell> s.doSomeThing("SmartTechie");
Demonstration of interface private methods!!!
The deafult interface method!!!

jshell>