What is a constructor?

Provide examples of constructors in Java, C++, and Python. Answer: A constructor is a special member function in object-oriented programming that initializes an object of a class when it is created. It has the same name as the class and is automatically called when a new object of that class is created. The main purpose of a constructor is to set the initial state of an object during its creation and ensure that objects are in a valid state when they are created. Examples of constructors: Java: ```java public class Student { private String name; private int age; public Student(String name, int age) { this.name = name; this.age = age; } } ``` C++: ```cpp class Student { private: std::string name; int age; public: Student(std::string name, int age) : name(name), age(age) {} }; ``` Python: ```python class Student: def __init__(self, name, age): self.name = name; self.age = age; } ```