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Q1. Given: What is the result? A. The sum is 2 B. The sum is 14 C. The sum is 15 D. The loop executes infinite times E. Compilation fails View AnswerAnswer: E Q2. Which of the following can fill in the blank in this code to make it compile? A. abstract B. final C. private D. default E. int View AnswerAnswer: C Explanation: From Java SE 8, we can use static and/or default method
Q1. Given:Â class Cake {Â int model;Â String flavor;Â Cake() {Â model = 0;Â flavor = "Unknown";Â }Â }Â public class Test {Â public static void main(String[] args) {Â Cake c = new Cake();Â bake1(c);Â System.out.println(c.model + " " + c.flavor);Â bake2(c);Â System.out.println(c.model + " " + c.flavor);Â }Â public static Cake bake1(Cake c) {Â c.flavor = "Strawberry";Â c.model = 1200;Â return c;Â }Â
Q1. Given: public class App { // Insert code here System.out.print("Welcome to the world of Java"); } } Which two code fragments, when inserted independently at line // Insert code here, enable the program to execute and print the welcome message on the screen? A. static public void main (String [] args) { B. static void main (String [] args) { C. public static void Main (String [] args) {Â
Q1. Given: Which code fragment should you use at line n1 to instantiate the dvd object successfully? A. Option A B. Option B C. Option C D. Option D View AnswerAnswer: C Q2. Given: class Mid { public int findMid(int n1, int n2) { return (n1 + n2) / 2; } } public class Calc extends Mid { public static void main(String[] args) { int n1 = 22, n2 = 2; // insert code here System.out
Q1. Which of the following can fill in the blank in this code to make it compile? A. abstract B. final C. private D. default E. int View AnswerAnswer: C Explanation: From Java SE 8, we can use static and/or default methods in interfaces, but they should be non abstract methods. SO in this case using default in blank is completely legal. Hence option C is correct. Option A is incorrect as
Q1. Given the following two classes: How should you write methods in the ElectricAccount class at line n1 so that the member variable bill is always equal to the value of the member variable kwh multiplied by the member variable rate? Any amount of electricity used by a customer (represented by an instance of the customer class) must contribute to the customer's bill (represented by the mem
Q1. Given: A. X XX B. X Y X C. Y Y X D. Y YY View AnswerAnswer: D Q2. Given: What is result? A. Successful B. Unsuccessful C. Compilation fails D. An exception is thrown at runtime View AnswerAnswer: C Q3. Consider following method Which statement is true? A. This method is invalid. B. This method can be used only in an interface. C. This method can return anything. D. This
Q1. Given: What is the result? A. Area is 6.0 B. Area is 3.0 C. Compilation fails at line n1 D. Compilation fails at line n2. View AnswerAnswer: D Q2. Given the code fragment: What is the result? A. Match 1 B. Match 2 C. No Match D. A NullPointerException is thrown at runtime. View AnswerAnswer: B Explanation: it will compare the string contents of the StringBuilder with string