This code defines a Java class named `Employee` that is...

January 2, 2025 at 04:37 AM

public class Employee implements Serializable {
// Private fields for employee details
private int empID;
private String name;
private double salary;
private String designation;
private String department;
// Public no-argument constructor (required for Java Beans)
public Employee() {}
// Getter and Setter methods for EmpID
public int getEmpID() {
return empID;
}
public void setEmpID(int empID) {
this.empID = empID;
}
// Getter and Setter methods for Name
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
// Getter and Setter methods for Salary
public double getSalary() {
return salary;
}
public void setSalary(double salary) {
this.salary = salary;
}
// Getter and Setter methods for Designation
public String getDesignation() {
return designation;
}
public void setDesignation(String designation) {
this.designation = designation;
}
// Getter and Setter methods for Department
public String getDepartment() {
return department;
}
public void setDepartment(String department) {
this.department = department;}
@Override
public String toString() {
return "Employee{" +
"empID=" + empID +
", name='" + name + '\'' +
", salary=" + salary +
", designation='" + designation + '\'' +
", department='" + department + '\'' +
'}';
}
public static void main(String[] args) {
Employee employee = new Employee();
employee.setEmpID(101);
employee.setName("Dhruv Rohilla");
employee.setSalary(75000.0);
employee.setDesignation("Software Engineer");
employee.setDepartment("IOT");
System.out.println(employee);
}
}

This code defines a Java class named Employee that is a blueprint for creating employee objects. It also includes a main method to demonstrate its functionality. Here's what the code does:

Features of the `Employee` class:

Implements Serializable:
- The class implements the Serializable interface, which means its objects can be serialized (converted into a byte stream for storage or network transmission) and deserialized (reconstructed back into objects). This is commonly used in Java for storing objects persistently or transferring them over networks.
Private Fields:
- The class has the following private fields (properties) for storing employee details:
  - int empID: Stores the employee's unique ID.
  - String name: Stores the employee's name.
  - double salary: Stores the employee's salary.
  - String designation: Stores the employee's job title.
  - String department: Stores the employee's department.
Default Constructor:
- A no-argument constructor public Employee() is provided. This is required for Java Beans, allowing instances to be created without explicitly passing initial arguments.
Getter and Setter Methods:
- Provides public getter (get...) and setter (set...) methods for each private field. These methods adhere to the Java Beans convention and enable controlled access to private fields:
  - Example:
    - getEmpID() retrieves the value of empID.
    - setEmpID(int empID) sets the value of empID.
Overridden toString Method:
- The toString method is overridden to provide a readable string representation of the Employee object. When System.out.println(employee) is called, this method is used to print the employee object's details in a formatted manner.

Functionality in the `main` Method:

Create an Employee Object:
- An Employee object employee is instantiated using the default constructor.
Set the Fields Using Setters:
- Each setter method is used to populate the fields of the Employee object. Example values are provided:
  - empID = 101
  - name = "Dhruv Rohilla"
  - salary = 75000.0
  - designation = "Software Engineer"
  - department = "IOT"
Print the Object:
- The System.out.println(employee) statement prints the string representation of the employee object by internally invoking the overridden toString method.

Output:

When the program is run, it outputs:

Employee{empID=101, name='Dhruv Rohilla', salary=75000.0, designation='Software Engineer', department='IOT'}

This is the result of the toString method formatting the employee details into a string.

Summary:

The Employee class represents an employee with attributes like ID, name, salary, designation, and department.
It provides a template for creating serializable objects, along with getter/setter methods for field access.
The main method demonstrates the creation, manipulation, and printing of an Employee object.

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This code defines a Java class named `Employee` that is...

Features of the Employee class:

Functionality in the main Method:

Output:

Summary:

Features of the `Employee` class:

Functionality in the `main` Method: