كيف يصير الكائن نصًا؟

public class TestClass {
    public static void main(String[] args) {
        Employee e1 = new Employee("Mohamed", 20, 5000);
        System.out.println(e1);
    }
}

public class Employee {
    private String name;
    private int age;
    private double salary;

    public Employee(String n, int a, double s) {
        name = n;
        age = a;
        salary = s;
    }

    public String toString() {
        return "name: " + name + ", age: " + age + ", salary: " + salary;
    }
}