What is the output of the following code? Include a description of what happens. class Main { public static void main(String[] args) { SecondClass myObject = new SecondClass(93,7); System.out.println(myObject); } } class FirstClass { private int num; public FirstClass(int num) { this.num = num; System.out.println("This is a statement in the FirstClass constructor"); } public String toString() { return String.format("In an object of type FirstClass: num = %d", num); } } class SecondClass extends FirstClass { private int num; public SecondClass(int a, int b) { super(a); this.num = b; System.out.println("This is a statement in the SecondClass constructor."); } public String toString() { return String.format("%s%nIn an object of type SecondClass: num = %d", super.toString(), num); } }
What is the output of the following code? Include a description of what happens. class Main { public static void main(String[] args) { SecondClass myObject = new SecondClass(93,7); System.out.println(myObject); } } class FirstClass { private int num; public FirstClass(int num) { this.num = num; System.out.println("This is a statement in the FirstClass constructor"); } public String toString() { return String.format("In an object of type FirstClass: num = %d", num); } } class SecondClass extends FirstClass { private int num; public SecondClass(int a, int b) { super(a); this.num = b; System.out.println("This is a statement in the SecondClass constructor."); } public String toString() { return String.format("%s%nIn an object of type SecondClass: num = %d", super.toString(), num); } }
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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Concept explainers
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:
Question
What is the output of the following code? Include a description of what happens.
class Main {
public static void main(String[] args) {
SecondClass myObject = new SecondClass(93,7);
System.out.println(myObject);
}
}
class FirstClass {
private int num;
public FirstClass(int num) {
this.num = num;
System.out.println("This is a statement in the FirstClass constructor");
}
public String toString() {
return String.format("In an object of type FirstClass: num = %d", num);
}
}
class SecondClass extends FirstClass {
private int num;
public SecondClass(int a, int b) {
super(a);
this.num = b;
System.out.println("This is a statement in the SecondClass constructor.");
}
public String toString() {
return String.format("%s%nIn an object of type SecondClass: num = %d", super.toString(), num);
}
}
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