3.private int X;public int z;public Secret ()}0 = X{public Secret(int a)}{public Secret (int a, int b)}{public String toString()'. + A + u = K ' + X + wcount! (qunoo +{public static void incrementY ()}{54. How many constructors are present in the class definition above?C. 2d. 3a.b. 1c. Sets the value of x to 0 and the value ofz to 1d. There is no default constructor.55. What does the default constructor do in the class definition above?a.Sets the value of x to 0b. Sets the value of z to 156. Based on the class definition above, which of the following statements is illegal?Secret.incrementY();b.Secret.count++;c. Secret.z++Bd. None of these

Dear learner, hope you are doing well, I will try my best to answer this question. Thank You!!Ans : option - d Reason : Constructors have the same name as the class, and they usually initialize the data members of the new object. As, there are three methods whose name is similar to the main class, i.e., secret , so, there are three constructors.Ans : option - c Reason : Java compiler automatically creates a default constructor (Constructor with no arguments) in case no constructor is present in the java class. As, secret() is the default constructor here, so it will obviously execute and set the values of the variables as assigned. Here, the value of x is set to 0(zero) and z is set to 1.Ans : option - b Reason : The value of static variables cannot be changed as the name signifies. Here, Count is initialised as a static variable , so the value of count remains constant throughout the process. So, secret.count++ is illegal.

Engineering

Computer Science

Public class secret private int x; private static int y; public static int count; public int z; public Secret () 2 - 1; public Secret (int a) X - a; public Secret (int a, int b) public String tostring () return ("x = " + x + ", y = " +y + ", count = " + count) i public static void incrementY() ++6 { 54. How many constructors are present in the class definition above? c. d. 3 2 b. 1 55. What docs the default constructor do in the class definition above? Sets the value of x to 0 c. Sets the value of x to 0 and the value of b. Sets the value of z to 1 d. There is no default constructor. 56. Based on the class definition above, which of the following statements is illegal? a. Secret.incrementY () ; b. Secret.count++; c. Secret.z++; d. None of these 13

Public class secret private int x; private static int y; public static int count; public int z; public Secret () 2 - 1; public Secret (int a) X - a; public Secret (int a, int b) public String tostring () return ("x = " + x + ", y = " +y + ", count = " + count) i public static void incrementY() ++6 { 54. How many constructors are present in the class definition above? c. d. 3 2 b. 1 55. What docs the default constructor do in the class definition above? Sets the value of x to 0 c. Sets the value of x to 0 and the value of b. Sets the value of z to 1 d. There is no default constructor. 56. Based on the class definition above, which of the following statements is illegal? a. Secret.incrementY () ; b. Secret.count++; c. Secret.z++; d. None of these 13

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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Question

3.
private int X;
public int z;
public Secret ()
}
0 = X
{
public Secret(int a)
}
{
public Secret (int a, int b)
}
{
public String toString()
'. + A + u = K ' + X + w
count
! (qunoo +
{
public static void incrementY ()
}
{
54. How many constructors are present in the class definition above?
C. 2
d. 3
a.
b. 1
c. Sets the value of x to 0 and the value of
z to 1
d. There is no default constructor.
55. What does the default constructor do in the class definition above?
a.
Sets the value of x to 0
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++;
c. Secret.z++B
d. None of these

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