diff --git a/src/main/java/org/example/Employee.java b/src/main/java/org/example/Employee.java
new file mode 100644
index 0000000..4ef4d38
--- /dev/null
+++ b/src/main/java/org/example/Employee.java
@@ -0,0 +1,67 @@
+package org.example;
+
+public class Employee {
+    private String name;
+    private String email;
+    private int age;
+    private double salary;
+
+    public Employee(String name, String email, int age, double salary){
+        setName(name);
+        setEmail(email);
+        setAge(age);
+        setSalary(salary);
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        if (name == null) {
+            System.out.println("Name is null");
+            return;
+        }
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        if (email == null || !email.contains("@")) {
+            System.out.println("Email is null");
+            return;
+        }
+        this.email = email;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        if (age > 0) {
+            this.age = age;
+        } else {
+            System.out.println("Age must be positive.");
+        }
+    }
+
+    public double getSalary() {
+        return salary;
+    }
+
+    public void setSalary(double salary) {
+        if (salary >= 0) {
+            this.salary = salary;
+        } else {
+            System.out.println("Salary cannot be negative.");
+        }
+    }
+
+    public String getDetails(){
+        return "Name: " + name + ", Email: " + email + ", Age: " + age + ", Salary: " + salary;
+    }
+}
diff --git a/src/main/java/org/example/Intern.java b/src/main/java/org/example/Intern.java
new file mode 100644
index 0000000..8f08460
--- /dev/null
+++ b/src/main/java/org/example/Intern.java
@@ -0,0 +1,16 @@
+package org.example;
+
+public class Intern extends Employee {
+    private static final double maxSalary = 20000;
+    public Intern(String name, String email, int age, double salary) {
+        super(name, email, age, salary);
+    }
+    @Override
+    public void setSalary(double salary) {
+        if (salary > maxSalary) {
+            System.out.println("Salary is greater than max salary");
+        }else  {
+            super.setSalary(salary);
+        }
+    }
+}
diff --git a/src/main/java/org/example/Main.java b/src/main/java/org/example/Main.java
new file mode 100644
index 0000000..d77470c
--- /dev/null
+++ b/src/main/java/org/example/Main.java
@@ -0,0 +1,32 @@
+package org.example;
+
+import java.io.FileWriter;
+import java.io.IOException;
+
+//TIP To <b>Run</b> code, press <shortcut actionId="Run"/> or
+// click the <icon src="AllIcons.Actions.Execute"/> icon in the gutter.
+public class Main {
+    public static void main(String[] args) {
+        Employee[] employees = new Employee[10];
+
+        employees[0] = new Employee("John Smith", "john.smith@mail.com", 30, 5000);
+        employees[1] = new Employee("Emma Johnson", "emma.johnson@mail.com", 28, 6200);
+        employees[2] = new Employee("Michael Brown", "michael.brown@mail.com", 35, 7200);
+        employees[3] = new Employee("Olivia Davis", "olivia.davis@mail.com", 26, 4800);
+        employees[4] = new Employee("William Miller", "william.miller@mail.com", 40, 8500);
+        employees[5] = new Employee("Sophia Wilson", "sophia.wilson@mail.com", 32, 6900);
+        employees[6] = new Employee("James Moore", "james.moore@mail.com", 29, 5400);
+        employees[7] = new Employee("Isabella Taylor", "isabella.taylor@mail.com", 27, 5100);
+        employees[8] = new Employee("Benjamin Anderson", "ben.anderson@mail.com", 38, 9100);
+        employees[9] = new Employee("Mia Thomas", "mia.thomas@mail.com", 31, 6300);
+
+        try(FileWriter fw = new FileWriter("employee.txt")){
+            for(Employee emp : employees){
+                fw.write(emp.getDetails() + "\n");
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}
+