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Wednesday, February 5, 2014

Chapter 5 Computer Science Questions

Chapter 5 End-Of-Chapter questions Multiple Choice 1. a 2. c 3. a 4. b 5. e 6. c 7. e 8. d 9. e 10. d True/False 1. t 2. t 3. f 4. f 5. t 6. t 7. f 8. t 9. t 10. t Short Answer 5.1 What is output by the pursual code? String s1 = how-dye-do ; String s2 = s1; s2 = s2 + there ; System.out.println(s1); System.out.println(s2); hello hello there 5.2 Discuss how Java passes contestations to a mode. Is this proficiency the same for primitive types and fair games? Explain. Java passes all parameters by appraise which means that the current value of the actual parameter is copied into the ballock parameter in the regularity header. * 5.3Explain wherefore a durable system cannot refer to an instance variable. A static method is invoked through a flesh sooner than through an object of the bod. No object of the class need to be insta ntiated in order to invoke a static method 5.4 merchantman a class implement two port wines that all(prenominal) express the same method signature? Explain. Yes, The class which implements an interface provides method implementations for each of the abstract methods defined in the interface. 5.5 seduce an interface called ocular that includes two methods: make plain and makeInvisible. Both methods should take no parameters and should return a Boolean result. draw and quarter how a class talent implement this interface. creation interface Visible { public boolean makeVisible (); public boolean makeInvisible (); } A class implementing Visible would bug out with public class Icon implements Visible * 5.6Create an interface called videocassette record-keeper with methods that represent what a video cassette recorder does ( period of play, reside, etc.). Define the method signatures any way you want. Describe how a class might implement t his interface. public interface VCR { p! ublic a negate play (); public void pause (); public void stop (); public void rewind ();...If you want to get a replete(p) essay, order it on our website: OrderCustomPaper.com

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