Remove key from map.
- Chapter 3 Generics and Collections
- from OCP Oracle® Certified Professional Java® SE 8 Programmer II
- Publisher: John Wiley & Sons
- Released: December 2015
This is not correct. If the value in map is null, then it doesn't evaluate function and just add the default value stated on merge method
Share this highlighthttp://learning.oreilly.com/a/ocp-oracle-certified/18398295/