COMP 202 Lecture 4: Command Line Arguments and Random Numbers

42. The bake method of the CookieJar class should take as input arguments the type of cookie to be baked, the number of cookies to be baked, and what the calories of each of these cookies will be (calPerCookie). No return value is needed. The bake method should be accessible from other classes. What is the correct method header? (A) public void bake (String type, int number, int calPerCookie) (B) private static void bake (String type, int number, int calperCookie) (C) public static void bake (String type, int number, int calperCookie) (D) private void bake (String type, int number, int calPerCookie) (E) public int bake (String type, int number, int calperCookie)

4. In this question, you will be shown a snippet of code. You will then be shown the output from either the compiler or the Java virtual machine and be asked what the error is and how to fix it. In each case, your answer should include the line number of the problem, a one or two sentence explanation as to why the issue occurs, and a specific fix for the problem. Your fix should mention the exact line or lines of code you'd add/change/delete. Total for this question (5 parts): (15 points) (a) Consider the following class: import java.util.Scanner; public class Hockeystandings //This method should calculate the percentage of games in which the team lost. public static double computePercentageLosses (int numwins, int numLosses) return numLosses/ (numwins + numLosses) * 100; public static void main(String[] args) { Scanner reader - new Scanner (System.in); System.out.println("Enter the number of wins for the Maple Leafs"); int numLeafwins = reader.nextInt (); System.out.println("Enter the number of losses for the Maple Leafs"); int numLeaflosses-reader.nextInt (); System.out.println("Enter the number of wins for the Canadiens"); int numCanadienswins – reader.nextInt (); System.out.println("Enter the number of losses for the Canadiens"); int numCanadienslosses = reader.nextInt (); double mapleLeafs Record - computePercentage Losses (numLeafwins, numLeaf Losses); double canadienskecord - computePercentage Losses (numCanadienswins, nuCanadienslos305): if (canadiens Record > mapleleafsRecord) { System.out.println("Of course the Leafs did worse."); else { System.out.println("Wow, that hasn't happened for a long time!"); The point of the program is to ask the user to enter numbers representing the wins and losses of the Maple Leafs and Canadiens in a season. The code compiles successfully and when you run the program, you enter the values: 2 80 40 42 into the keyboard. You expect that the program will output the message Of course the Leafs did worse since they had fewer wins. However, to your surprise, the output of the program is: Wow, that hasn't happened for a long time! Why is this the case and fix the error?

41. The eat method should go through the cookie jar, find the first cookie of the type given as input and take it out of the jar. It should then return the number of calories of that cookie, or 0 if no cookie of that type is in the jar. What is the correct line of code to be added at line 31? (A) Nothing is missing (B) for (int i = 0; i < cookies.size(); i++) (C) while (cookies.size() > 0) (D) for (int i = 1; i <= cookies.size(); i++) (E) if (cookies.getType (type))