1. [BankAccount example] Given a superclass BankAccount and SavingsAccount subclass, what can be a valid reason for setting BankAccount's withdraw method to final? (select all that apply) a) The withdraw method is common to all account types b) To hide the implementation of withdraw c) Withdraw method is required in the subclass d) None of the above 2. Which of the following is TRUE about setters and getters? a) A class should have a getter for each of its attributes b) There should be a corresponding setter for every getter in a class c) The return type of a getter is void d) A getter can return object references and arrays e) All of the above 3. Which of the following statements is/are TRUE? Classes without specified package names are automatically placed inside an unnamed package. The java.util package is automatically imported by the Java compiler for convenience. I. I. I only Il only Both I and II Neither I nor I|
1. [BankAccount example] Given a superclass BankAccount and SavingsAccount subclass, what can be a valid reason for setting BankAccount's withdraw method to final? (select all that apply) a) The withdraw method is common to all account types b) To hide the implementation of withdraw c) Withdraw method is required in the subclass d) None of the above 2. Which of the following is TRUE about setters and getters? a) A class should have a getter for each of its attributes b) There should be a corresponding setter for every getter in a class c) The return type of a getter is void d) A getter can return object references and arrays e) All of the above 3. Which of the following statements is/are TRUE? Classes without specified package names are automatically placed inside an unnamed package. The java.util package is automatically imported by the Java compiler for convenience. I. I. I only Il only Both I and II Neither I nor I|
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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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
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Please answer all the questions.
![1. [BankAccount example] Given a superclass BankAccount and SavingsAccount subclass, what
can be a valid reason for setting BankAccount's withdraw method to final? (select all that apply)
a) The withdraw method is common to all account types
b) To hide the implementation of withdraw
c) Withdraw method is required in the subclass
d) None of the above
2. Which of the following is TRUE about setters and getters?
a) A class should have a getter for each of its attributes
b) There should be a corresponding setter for every getter in a
c) The return type of a getter is void
d) A getter can return object references and arrays
e) All of the above
3. Which of the following statements is/are TRUE?
Classes without specified package names are automatically placed inside an unnamed
package.
II.
I.
The java.util package is automatically imported by the Java compiler for convenience.
I only
Il only
Both I and II
Neither I nor II
4. Which line(s) of code will produce an error? *
package letter;
package shape;
import letter.A;
import letter.B;
public class A {
private int x;
void getX() {)}
}
public class Round {
void getCircumference() {
A a1 = new A();
в b1 %3 new B();
a1.getX(); (3)
b1.write(); (4)
}
package letter;
public class B {
public void write() {
A a1 = new A();
a1.x =
2; (1)
a1.getX(); (2)
}
}
1 and 2 only
1 and 3 only
2 and 3 only
3 and 4 only
O 1, 2, and 3 only](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3ecb5657-2514-4f4f-8091-200a1c847e98%2F6d0026f0-a3c1-4bc8-a8d9-c054425a8835%2F5hcahjo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. [BankAccount example] Given a superclass BankAccount and SavingsAccount subclass, what
can be a valid reason for setting BankAccount's withdraw method to final? (select all that apply)
a) The withdraw method is common to all account types
b) To hide the implementation of withdraw
c) Withdraw method is required in the subclass
d) None of the above
2. Which of the following is TRUE about setters and getters?
a) A class should have a getter for each of its attributes
b) There should be a corresponding setter for every getter in a
c) The return type of a getter is void
d) A getter can return object references and arrays
e) All of the above
3. Which of the following statements is/are TRUE?
Classes without specified package names are automatically placed inside an unnamed
package.
II.
I.
The java.util package is automatically imported by the Java compiler for convenience.
I only
Il only
Both I and II
Neither I nor II
4. Which line(s) of code will produce an error? *
package letter;
package shape;
import letter.A;
import letter.B;
public class A {
private int x;
void getX() {)}
}
public class Round {
void getCircumference() {
A a1 = new A();
в b1 %3 new B();
a1.getX(); (3)
b1.write(); (4)
}
package letter;
public class B {
public void write() {
A a1 = new A();
a1.x =
2; (1)
a1.getX(); (2)
}
}
1 and 2 only
1 and 3 only
2 and 3 only
3 and 4 only
O 1, 2, and 3 only
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