bdkosher · May 9, 2020 01:02
diff --git a/java_concrete_v_interface.txt b/java_concrete_v_interface.txt
 When concrete classes are preferrable to interfaces

 String vs. CharSequence
 - better relays immutability?
 - so widespread that it can be an inconvenience to accept a CharSequence and have to do something with it, like pass to another 3rd party library method

 Exception vs. Throwable
 - error details object in REST application, don't want people to attempt to create these if there's an Error

 LocalDate vs. ChronoLocalDate
 "Most applications should declare method signatures, fields and variables as LocalDate, not this interface."

 StringBuilder/Writeable vs. Appendable
	When concrete classes are preferrable to interfaces

	String vs. CharSequence
	- better relays immutability?
	- so widespread that it can be an inconvenience to accept a CharSequence and have to do something with it, like pass to another 3rd party library method

	Exception vs. Throwable
	- error details object in REST application, don't want people to attempt to create these if there's an Error

	LocalDate vs. ChronoLocalDate
	"Most applications should declare method signatures, fields and variables as LocalDate, not this interface."

	StringBuilder/Writeable vs. Appendable