FSC239Y5 Lecture : FSC239 Nov 11 2010

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viridiancockroach622

24 Oct 2011

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Tell me what you think, why you think it and how you back it up. How you support your opinion; that"s what matters. Each question should not exceed 300 words; ex. Proper referencing of all sources used is required: In the body of your answer as well. Use direct quote when something is said and you cannot say it any more clearly. Due 10:10am; both hard copy and turnitin. com. 2. a) what are the differences in how the cases are presented. 3: asking you to pick out information is important for future case work, development in forensic science. Avoid using big words and complicated structure. Finish early and then proof read it. Be sure to answer the question asked. On the course syllabus about the turnitin. com use. You will see renee willmon"s name appear as the instructor. You can upload more than once; the last one will be replaced.

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2. In this section you will be shown several classes. Inside the code for each class will be a question. You should provide your answer to the question inside the chart. Many of the questions will ask you whether a variable has changed or not. In cases that the variable being asked about is a primitive type, you should provide your answer based on the data stored in the primitive type. In cases that the variable being asked about is a reference type, you should provide your answer based on the data stored at the Object linked to by the reference type. For example, in the first snippet, the question asks about the variable x defined in the main method. Since x is a primitive type, you should answer YES if you think the variable x has had its value changed after the method methodOne() returns. All your answers should go in the chart below: (9 points) Part Answer to question x changed (circle one)? YES NO y changed (circle one)? a changed (circle one)? b changed (circle one)? d1 a changed (circle one)? b changed (circle one)? YES e words changed (circle one)? YES NO Values in array of array referred to by y: What is printed to the screen? (a) public class ReferenceTesti public static void methodOne (int x){ x++; public static void main(String[args) { int x = 0; methodOne (x); //IS THE DATA STORED OR REFERRED TO BY X THE SAME? (ANSWER IN CHART)

Type of Errors For each of the following answer whether they would cause an compiler error, runtime error, or a bug. In other cases the mentioned error may not cause a problem for the computer and is merely a question of style. In this case you should choose "Style" In other cases the question may not cause a problem at all in which case you should answer "No Error" For the purpose of this question, you can use the following definitions: • Compiler error : An error that occurs during the compilation phase of your development. In this case no class file is produced. • Runtime error: An error that occurs while you are running your program. Your program starts to execute but terminates before the main method has finished executing. • Logical error or bug : An error that results in the wrong results being seen • Style error: The error does not make a difference to the computer but is something that may be considered bad code. 7. Omitting a semi-colon at the end of a variable assignment. (A) Compiler Error (B) Bug (logical) Error (C) Style (D) Runtime Error (E) No Error

59. Line 7 (A) System.out.print("null"); } } (B) System.out.print("*"); } } (C) System.out.print("\n"); } } (D) System.out.print(""); } } (E) System.out.print(" "); } } Coding Question - Sum square difference Write a method called sumSqDiff that takes an input an integer upperBound and returns the difference between the square of the sum and the sum of the squares of all natural numbers, up to and including that bound. For example, if the upperBound is 10, your method should compute the following: 102 (1) (1+2+3+...+10)2 – (12 +22 +32 +...+102) Use the 6 following questions to "write" your code. Pay close attention to how your answers group together with each other.

FSC239Y5 Lecture : FSC239 Nov 11 2010

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