Writing Classes Quiz is the name of the quiz that was created by jram[ersaud02. This one was shared on Quizlet. At the time of writing, it has a 5.0 rating with 7 reviews. Apparently, the quiz consists of a total of 20 terms. Below are the terms included in this set:
- Term: Given this code snippet, public class Person {public string name; public Person(String name) {this name = name; } public void changeName(String name) {this.name – name; } public void printName() { System.out.printIn(this.name); } }
What will this code print? Person myPerson = new Person(“Bob”); myPerson.changeName(“Joe”); myPerson name = “John”; myPerson.printName();
Description: John - Term: Given this code snippet, public class Athlete {public Athlete(String name) {this.name = name; } }
Description: Need to declare the name instance variable - Term: public class Pokemon {private String name; private int health; public Pokemon(String name, int health) {name = name; health = health; } }
what is wrong with the class definition? Hint: We expect the instance variables name and health to be initialized in the constructor.
Description: Must use this in constructor when the constructor parameters have the same name as instance variables. ie: this.name = name; this.health = health; - Term: Public class Main {private static int n = 0; public static void bar() { Main m1 = new Main(); Main m2 = new Main(); Main m3 = new Main(); m1.foo(); } public Main() { n = n + 1; } public void foo() {System.out.printIn(n); } }
Description: 3 - Term: What should be the output of the program if bar() were changed to the following:
public static void bar() {Main m1 = new Main(); Main m2 = new Main(); Main m3 = new Main(); m1.setN(5); m3.foo(); }
Description: 5 - Term: public class Main {private String str = “bar”; public void run() {Main m = new Main m = new Main(“foo”); System.out.printIn(m.getString()); } public Main(String str) { str = str; } public String getString() {return str; } }
Description: bar - Term: public class athlete {private String first_name; private String last_name; private int jersey; public int getJersey() {return this.jersey; }
public Athlete(string first_name, String last_name, int jersey) { this.first_name = first_name; this.last_name = last_name; this.jersey = jersey; } }
Description: You cannot set the jersey, since jersey is private and there is no setter method. - Term: public class Athlete {private String first_name; private String last_name; private int jersey; public int getJersey() { return this.jersey; }
public Athlete(string first_name, String last_name, int jersey) {this.first_name = first_name; this.last_name = last_name; this.jersey = jersey; } }
Description: atlete.getJersey() - Term: public class Athlete {private String first_name; private String last_name; private int jersey; public int getJersey; }
public Athlete(string first_name, String last_name, int jersey) { this.first_name = first_name; this.last_name = last_name; this.jersey = jersey; } }
Description: public void setJersey (int jersey) { this.jersey = jersey; } - Term: public class Athlete { String first_name; String last_name; int jersey; public Athlete(String first_name, String last_name, int jersey) { this.first_name = first name; this.last_name = last_name; this.jersey = jersey; } }
Description: Athlete athlete = new Athlete(“Dirk”, “Nowitzki”, 41); - Term: public class Foo { int bar; String stoo; public Foo() { this.bar = 0; this.stoo = “”; } public Foo(int bar) { this.bar = bar; stoo = “You”; }
Description: Foo fee; fee = new Foo(); - Term: Which of the following are valid instantiations of the class Athlete? I – Athlete joe = new Athlete(“Joe”, “Montana); II – Athlete joe = new Athlete(“Joe, “Montana”, “16”); III – athlete joe = new Athlete(“Joe”, “Montana”, 16);
Description: I and III - Term: public class Foo { public static void foo() { … } public void bar() { … } public void baz() {
Description: foo() - Term: public class Tvshow { private String name; private int channel; public TvShow (string name, int channel) { this.name = name; this.channel = channel; } public void getName() { return name; } public void setName(String name) { this.name = name; } }
Description: The return type for the getName method should be set to String. - Term: public class Strom { private int lighteningCount, private int precipTotal; private String precipType; public Storm(string precipType) { this.precipType = preciptType; precipTotal = 0; lighteningCount = 0; }
public Strom(String precipType, int precipTotal) { this.precipType = precipType; this.precipTotal = precipTotal; lighteningCount = 0; }
public Storm(String precipType, int lighteningCount) { this.precipType = precipType; this.lighteningCount = lighteningCount; precipTotal = 0; } }
Description: The code will not compile because there are two constructors with the same signature. - Term: Which of the following would be the best example of how the Internet has impacted the economy?
Description: Email has reduced the amount of mail that is produced and shipped. - Term: Which of the following is not part of the ACM Code of Ethics and Professional Conduct’s General Ethical Principles?
Description: Credit original creator when using other’s work. - Term: public static String mystery(String word, int I, int j) { string mystery = word.substring(I, i+ 1); mystery += word.substring(I, j); return mystery; }
Description: Precondition: I >= 0, I < word.length, I < = j. - Term: public static String mystery(string word, int I, int j) { string mystery = word.substring(I, i+ 1); mystery += word.substring(I, j); return mystery; }
Description: Precondition: j >= I and j <= word.length. - Term: The Insect class will contain a String for the insect’s name, an int for the number of legs it has, and a Boolean for whether or not the insect has wings. Which of the following is the most appropriate implementation for the Insect Class?
Description: public class Insect { private String name; [private int numLegs; private Boolean hasWings; //constructor and methods not shown }
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