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compiler/interpreter, JVM

Design Recipe

Objects

Java classes, constructors, instances

Eclipse

Tester class from Northeastern

testing data members after construction

Classes: simple, compound, skipped unions via empty interfaces

methods that calculate, formal vs actual parameters

return values

assignment

if, boolean

switch

9/17 unions via empty interfaces; type casts, instanceof

9/17 interface with polymorphic fcn (Animal: Dog, Cow, Fish)

linked list using interface over Node and Empty classes

recursive traversal of a linked list, non-polymorphic

9/24 polymorphic recursive traversal

toString, overloading

ArrayList?, Iterator