Which of the following class definitions is correct in Java?
(i)
Public class Employee
{
Private String name;
Private double salary;
Private int id; public Employee()
{
Name = "";
Salary = 0.0;
Id = 0;
} public Employee(String n, double s, int i)
{
Name = n;
Salary = s;
Id = i;
} public void print()
{
System.out.println(name + " " + id + " " + salary);
}
}
(ii)
Public class Employee
{
Private String name;
Private double salary;
Private int id; public void Employee()
{
Name = "";
Salary = 0.0;
Id = 0;
} public void Employee(String n, double s, int i)
{
Name = n;
Salary = s;
Id = i;
}
Public void print()
{
System.out.println(name + " " + id + " " + salary);
}
}
A) Only (i)
B) Only (ii)
C) Both (i) and (ii)
D) Neither is correct

Question

Quizplus · Accepted Answer

The correct class definition in Java should have the following characteristics:
- The class keyword should be followed by the class name starting with a capital letter.
- The class should have the necessary attributes and methods declared with the appropriate access modifiers.
- If any constructors are defined, they should be named after the class and should have no return type.

Option (i) follows these characteristics and defines the Employee class with three private attributes: name, salary, and id. It also defines two constructors (one with no arguments and one with three arguments) and a print method to display the attributes of an Employee object.

Option (ii) has several issues. First, it uses the keyword Public instead of public for both the class and the constructors, which is incorrect. Second, it defines two constructors named Employee, which will cause a compiler error because constructor names must match the class name. Finally, it defines a print method with the correct access modifier, but it is missing the keyword "void" in its signature, which will also cause a compilation error.

Which of the Following Class Definitions Is Correct in Java