What is the difference between a class member function and a special method for object initialization?

In Java, a class member function is a regular method defined inside a class and can be called on an object of that class. A special method for initializing objects is a constructor.

Differences:

• Constructor is called automatically when an object is created using new and is used to initialize the object's state.
• Constructor has no return type, not even void.
• The constructor's name matches the class name.
• A member function can have any name, return values, and can be called at any time after the object is created.

Example:

class Person {
    String name;

    // Constructor
    Person(String name) {
        this.name = name;
    }

    // Regular method
    void sayHello() {
        System.out.println("Hello, my name is " + name);
    }
}

Person p = new Person("Ivan"); // calling constructor
p.sayHello(); // calling method