AbstractClasses, Upcasting, Downcasting—TheProductionHierarchyDetermine which of the follo...

AbstractClasses, Upcasting, Downcasting—TheProductionHierarchy

Determine which of the following lines generates an error. Use the Production hierarchy of this chapter. In each case, explain the cause of the error.

a. Production p = new Musical("Sweeny Todd", "Harold Prince", "Hugh Wheeler", "Stephen Sondheim", " Stephen Sondheim", 557);

b. Production p = new Production();

c. Musical m = new Film();

d. Musical m = new Musical();

e. Play p = new Musical(); p.getDirector(); (Musical) p.getComposer();

f. Film play = new Musical();

g. Production p = new Musical(); p.getDirector(); (Play) p.getDirector(); (Play) p.getComposer();

h. Comparable c = new Musical(); Film f = new Musical(); c.compareTo(f);