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Homework 4: Mutation and Parameter Mechanisms

Homework 4: Mutation and Parameter Mechanisms - CS 4536...

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CS 4536 - Mutation Assignment CS 4536 Homework 4: Mutation and Parameter Mechanisms Due: Thursday Feb 7, 11:59pm via turnin (assignment name hwk4 ) Collaboration Policy : Pairs Permitted (except for optional makeup work in question 3) Neither interpreters nor Scheme code are required in this assignment. Question 3 has an optional interpreter component for those of you looking to make up for points lost on the first two assignments. 1. Java Parameter Mechanisms 1. People often summarize the difference between call-by-value and call-by-reference as "if a function F is call-by-value, mutations to parameters within F aren't visible outside of F". Write two short Java programs, one whose result indicates whether Java uses call-by- value or call-by-reference for flat values (such as ints) and one that makes the same assessment for objects (similar in spirit to the boxes we used in our interpreter). For each program, include a comment stating your answer (by-value or by-reference) and explaining how your program goes about the check. Good solutions will support your
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