public class ClassA { private int id; } protected String secret; protected static int count public ClassA(String sec) { id = count; count++; secret = sec.trim(); } public String toString() { 11 return "id: " + id + ", secret: + secret; } public class ClassB extends ClassA { public ClassB() { super("007"); } } Which class is considered the parent class? 1; A. Class B B. main C. ClassA D. protected C privato

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
(2) 1. Consider the following classes:
public class ClassA {
private int id;
}
protected String secret;
protected static int count =
public ClassA(String sec) {
id = count;
count++;
secret sec.trim();
}
public String toString() {
return "id: " + id + ", secret: + secret;
11
}
public class ClassB extends ClassA {
public ClassB() {
super("007");
}
1;
}
Which class is considered the parent class?
A. ClassB
B. main
C. ClassA
D. protected
E. private
Transcribed Image Text:(2) 1. Consider the following classes: public class ClassA { private int id; } protected String secret; protected static int count = public ClassA(String sec) { id = count; count++; secret sec.trim(); } public String toString() { return "id: " + id + ", secret: + secret; 11 } public class ClassB extends ClassA { public ClassB() { super("007"); } 1; } Which class is considered the parent class? A. ClassB B. main C. ClassA D. protected E. private
(5) 3. The following driver class is written for the two classes in question 1.
class TestClass {
public static void main(String[] args) {
ClassB obj = new ClassB( );
System.out.println(obj);
ClassA obj2 = new ClassA("mysecret");
System.out.println(obj2);
}
What is the output that would be produced when this driver is run?
A.
O B.
C.
}
D.
id: 1, secret: 007
id: 1, secret: 007
id: 1, secret: 007
id: 2, secret: mysecret
id: 0, secret: mysecret
id: 1, secret: 007
id: 2, secret: 007
id: 1, secret: mysecret
Transcribed Image Text:(5) 3. The following driver class is written for the two classes in question 1. class TestClass { public static void main(String[] args) { ClassB obj = new ClassB( ); System.out.println(obj); ClassA obj2 = new ClassA("mysecret"); System.out.println(obj2); } What is the output that would be produced when this driver is run? A. O B. C. } D. id: 1, secret: 007 id: 1, secret: 007 id: 1, secret: 007 id: 2, secret: mysecret id: 0, secret: mysecret id: 1, secret: 007 id: 2, secret: 007 id: 1, secret: mysecret
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