b) a) public abstract myClass ( int result-01 public void add(int x, int y) ( result x + y; } public abstract void print(); ( System.out.print(result); public class myClass ( private int x; public float getX() ( return x; } public void setX(int x) { this.x = x; Jass Page 4 of

b) a) public abstract myClass ( int result-01 public void add(int x, int y) ( result x + y; } public abstract void print(); ( System.out.print(result); public class myClass ( private int x; public float getX() ( return x; } public void setX(int x) { this.x = x; Jass Page 4 of

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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26. Assume the declaration of Exercise 24. A. Write the statements that derive the class dummyClass from class base as a private inheritance. (2 lines are { and }.) "A1 is { "A2 is "A3 is )) B. Determine which members of class base are private, protected, and public in class dummyClass. "B1 is dummyClass is a de
Trace through the following program and show the output. Show your work for partial credit. public class Employee { private static int empID = 1111l; private String name , position; double salary; public Employee(String name) { empID ++; this.name 3 пате; } public Employee(Employee obj) { empID = obj.empĪD; пате %3D оbj.naте; position = obj.position; %3D public void empPosition(String empPosition) {position = empPosition;} public void empSalary(double empSalary) { salary = empSalary;} public String toString() { return name + " "+empID + " "+ position +" $"+salary; public void setName(String empName){ name = empName;} public static void main(String args[]) { Employee empOne = new Employee("James Smith"), empTwo; %3D empOne.empPosition("Senior Software Engineer"); етрOпе.етpSalary(1000); System.out.println(empOne); еmpTwo empTwo.empPosition("CEO"); System.out.println(empOne); System.out.println(empTwo); %3D етpОпе empOne ;
Consider the following class definition: (8)class base{public:void setXYZ(int a, int b, int c);void setX(int a);int getX() const { return x; }void setY(int b);int getY() const { return y; }int mystryNum() { return (x * y - z * z); }void print() const;base() {}base(int a, int b, int c);protected:void setZ(int c) { z = c; }void secret();int z = 0;private:int x = 0;int y = 0;};a. Which member functions of the class base are protected?b. Which member functions of the class base are inline?c. Write the statements that derive the class myClass from classbase as a public inheritance.d. Determine which members of class base are private, protected,and public in class myClass.
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Consider the following class definition: (8) class base { public: void setXYZ(int a, int b, int c) ; voidsetX ( int a ) ; int getX ()const{returnx; } void setY ( int b ); intgetY()const{returny; } int mystryNum () {return ( x &*#x00A0;y - z &*#x00A0;z) ;} void print () const; base () } base(int a, int b, int c); protected: void setz ( int c) { z= c; } void secret(); int z= 0; private: int x= 0; int y = 0; }; a. Which member functions of the class base are protected? b. Which member functions of the class base are inline? c. Write the statements that derive the class myclass from class base as a public inheritance. d. Determine which members of class base are private, protected, and public in class myclass.
QUESTION 15 public class numClass { private int a; private static int y = 10; public numClass(int newX) {a=newx; } public void set(int newx) { a=newx; y+=a; } public void setY(int newy) { y=newY; } public static int getY() { return y; } }// end of class public class output { public static void main(String[] args) { numClass one = new numClass(10); numClass two = new numClass (2); try{ one. sety(30); two.set(4); if(one.getY()==30) throw new Exception ("30"); one.setY(40); } catch (Exception e) { two.sety (50); } System.out.println(two.getY()); }// end of main } // end of class
Lecture 15: Clicker Question #2 Given the Student class defined in this lecture: public class Student { private int id; private double gpa; public int getID() public double getGPA() public void setID(int n) ... public void setGPA(double g) . public void print() ... } public Student() public Student(int n, double g) What is the output of the following code snippet? Student bart = new Student(); Student lisa = new Student(345, 3.5); bart.setID(lisa.getID()); System.out.print(bart.getID() + + lisa.getID()); А. 00 В. 0 345 C. 3450 D. 345 345 II E. Something else 31
Question 15 1(8).png public class numClass { private int a; private static int y = 10; public numClass(int newx) {a-newx; } public void set(int newx) {a=newx; y+=a;} public void setY(int newY) {y-newY; } public static int getY() { return y; } // end of class Blank 1 Blank 1 Add your answer public class output[ public static void main(String[] args) { numclass one new numClass(10); numclass two new numClass (2); try{ one.sety(30); two.set(4); if(one.getY()-30) throw new Exception ("30"); one. sety (40); } catch(Exception e) { two.setY(50); } System.out.println(two.getY()); // end of main } // end of class ***
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Consider the following code segment and answer questions 14 and 15. class Point { public: Point (double x = -99, double y = -99) { this -> xM = x; this -> yM = y;} double getx () {return xM; } double gety () {return yM; } void setx (double x) {this -> xM = x; } void sety (double y) {this -> yM = y; } private: double xM, yM; }; 14. What is the output of the following code snippet: Point pl (100); cout << pl.getx() << " " << pl.gety(); a. The output of the program is: -99 -99 b. The output of the program is: 100 100 c. The output of the program is: -99 100 d. The output of the program is: 100 -99 e. None of the above. It doesn't compile because constructor of Point needs two arguments. 15. How many times does the constructor of class Point get called by the following code snippet: Point a (100, 200); Point b[6]; Point *c = new Point; Point *d = new Point (300, 400); a. Four times b. Three times c. Nine times d. Two times e. None of the above
public class Secret private int x; private static int y; public static int count; public int z; public Secret () } X ?t = 2 { public Secret (int a) } { public Secret (int a, int b) } { public String toString() return ("x = " count = " + count); { public static void incrementY () { { 54. How many constructors are present in the class definition above? C. 2 d. 3 b. 1 55. What does the default constructor do in the class definition above? a. Sets the value of x to 0 c. Sets the value of x to 0 and the value of z to 1 d. There is no default constructor. b. Sets the value of z to 1 56. Based on the class definition above, which of the following statements is illegal? Secret.incrementY (); b. Secret.count++3B a. c. Secret. 2++; d. None of these 13